An Upgraded Analysis of $\epsilon\prime/\epsilon$ at the Next-to-Leading Order (2009)
Ciuchini, M, Franco, E, Martinelli, G, Reina, L, Silvestrini, L
An upgraded analysis of $\ep$, $x_d$ and $\epp/\ep$, using the latest determinations of the relevant experimental and theoretical parameters, is presented. Using the recent determination of the top...
Status of the Unitarity Triangle Analysis (2009)
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
We present an update of the Unitarity Triangle (UT) analysis, within the Standard Model (SM) and beyond. Within the SM the main novelties are the inclusion in epsilon_K of the contributions of xi and...
An Improved Standard Model Prediction Of BR(B -> tau nu) And Its Implications For New Physics (2009)
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The recently measured B -> tau nu branching ratio allows to test the Standard Model by probing virtual effects of new heavy particles, such as a charged Higgs boson. The accuracy of the test is...
Flavor Physics in the Quark Sector (2009)
Antonelli, M, Asner, D M, Bauer, D, Becher, T, Beneke, M, Bevan, A J, ...
In the past decade, one of the major challenges of particle physics has been to gain an in-depth understanding of the role of quark flavor.In this time frame, measurements and the theoretical...
Flavor Physics in the Quark Sector (2009)
Antonelli, M., Asner, D. M., Bauer, D., Becher, T., Beneke, M., Bevan, A. J., ...
In the past decade, one of the major challenges of particle physics has been to gain an in-depth understanding of the role of quark flavor.In this time frame, measurements and the theoretical...
New Physics from Flavour (2009)
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The UT{\it{fit}} Collaboration has produced several analyses in the context of flavour physics both within and beyond the Standard Model. In this paper we present updated results for the Standard...
Buchalla, G., Komatsubara, T. K., Muheim, F., Silvestrini, L., Artuso, M., Asner, D. M., ...
The present report documents the results of Working Group 2: B, D and K decays, of the workshop on Flavor in the Era of the LHC, held at CERN from November 2005 through March 2007. With the advent of...
Searching For New Physics With B to K pi Decays (2008)
Ciuchini, M., Franco, E., Martinelli, G., Pierini, M., Silvestrini, L.
We propose a method to quantify the Standard Model uncertainty in B to K pi decays using the experimental data, assuming that power counting provides a reasonable estimate of the subleading terms in...
Proceedings of SuperB Workshop VI: New Physics at the Super Flavor Factory (2008)
Hitlin, D. G., Cheng, C. H., Asner, D. M., Hurth, T., McElrath, B., Shindou, T., ...
The sixth SuperB Workshop was convened in response to questions posed by the INFN Review Committee, evaluating the SuperB project at the request of INFN. The working groups addressed the capability...
First Evidence of New Physics in b s Transitions (2008)
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
We combine all the available experimental information on Bs mixing, including the very recent tagged analyses of Bs to J/Psi phi by the CDF and D0 collaborations. We find that the phase of the Bs...
Buchalla, G., Komatsubara, T. K., Muheim, F., Silvestrini, L., Artuso, M., Asner, D. M., ...
With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator facilities. While...
SUSY Les Houches Accord 2 (2008)
Allanach, B C, Balázs, C, Bélanger, G, Bernhardt, M, Boudjema, F, Choudhury, D, ...
The Supersymmetry Les Houches Accord (SLHA) provides a universal set of conventions for conveying spectral and decay information for supersymmetry analysis problems in high energy physics. Here, we...
SUSY Les Houches Accord 2 (2007)
Allanach, B. C., Balazs, C., Belanger, G., Bernhardt, M., Boudjema, F., Choudhury, D., ...
The Supersymmetry Les Houches Accord (SLHA) provides a universal set of conventions for conveying spectral and decay information for supersymmetry analysis problems in high energy physics. Here, we...
Soft SUSY breaking grand unification: Leptons vs quarks on the flavor playground (2007)
Ciuchini, M, Masiero, A, Paradisi, P, Silvestrini, L, Vempati, SK, Vives, O
The authors systematically analyze the correlations between the various leptonic and hadronic flavor violating processes arising in SUSY Grand Unified Theories. Using the GUT-symmetric relations...
D-(D)over-bar mixing and new physics: General considerations and constraints on the MSSM (2007)
Ciuchini, M., Franco, E., Guadagnoli, D., Lubicz, V., Pierini, M., Porretti, Valentina, ...
5 pages, 3 figures.-- ISI Article Identifier: 000251016300011.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0703204
Model-independent constraints on Delta F=2 operators and the scale of New Physics (2007)
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
We update the constraints on new-physics contributions to Delta F=2 processes from the generalized unitarity triangle analysis, including the most recent experimental developments. Based on these...
Improved Determination of the CKM Angle $\alpha$ from $B \to \pi\pi$ decays (2007)
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
Motivated by a recent paper that compares the results of the analysis of the CKM angle alpha in the frequentist and in the Bayesian approaches, we have reconsidered the information on the hadronic...
Soft SUSY breaking grand unification: Leptons vs quarks on the flavor playground (2007)
Ciuchini, A., Masiero, A., Paradisi, Paride, Silvestrini, L., Vempati, S. K., Vives, Óscar
31 pages, 10 figures.-- ISI Article Identifier: 000249854400006.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0702144
Investigating The Physics Case of Running a B-Factory at the Y(5S) Resonance (2007)
Baracchini, E., Bona, M., Ciuchini, M., Ferroni, F., Pierini, M., Piredda, G., ...
We discuss the physics case of a high luminosity B-Factory running at the Y(5S) resonance. We show that the coherence of the B meson pairs is preserved at this resonance, and that Bs can be well...
D-Dbar mixing and new physics: general considerations and constraints on the MSSM (2007)
Ciuchini, M., Franco, E., Guadagnoli, D., Lubicz, V., Pierini, M., Porretti, V., ...
Combining the recently available experimental evidence of D-Dbar mixing, we extract model-independent information on the mixing amplitude and on its CP-violating phase. Using this information, we...
B_s to K^(*)0 \bar K^(*)0 decays: the golden channels for new physics searches (2007)
Ciuchini, M., Pierini, M., Silvestrini, L.
We point out that time-dependent CP asymmetries in B_s to K^{*0} \bar K^{*0} decays probe the presence of new physics in b to s transitions with an unprecedented theoretical accuracy. We show that,...
Soft SUSY Breaking Grand Unification: Leptons vs Quarks on the Flavor Playground (2007)
Ciuchini, M., Masiero, A., Paradisi, P., Silvestrini, L., Vempati, S. K., Vives, O.
We systematically analyze the correlations between the various leptonic and hadronic flavor violating processes arising in SUSY Grand Unified Theories. Using the GUT-symmetric relations between the...
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The recent measurements of the B_s meson mixing amplitude by CDF and of the leptonic branching fraction BR(B to tau nu) by Belle call for an upgraded analysis of the Unitarity Triangle in the...
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
Starting from a (new physics independent) tree level determination of rhobar and etabar, we perform the Unitarity Triangle analysis in general extensions of the Standard Model with arbitrary new...
Improved Determination of the CKM Angle alpha from B to pi pi decays (2007)
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
Motivated by a recent paper that compares the results of the analysis of the CKM angle alpha in the frequentist and in the Bayesian approaches, we have reconsidered the information on the hadronic...
Status of the Cabibbo-Kobayashi-Maskawa matrix and Unitarity Triangle fits (2007)
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The status of the Unitarity Triangle analysis realized by the UTfit Collaboration is presented. The most recent determinations of theoretical and experimental parameters are used in order to...
Soft SUSY breaking grand unification: Leptons vs quarks on the flavor playground (2007)
Ciuchini, M, Masiero, A, Paradisi, P, Silvestrini, L, Vempati, SK, Vives, O
The authors systematically analyze the correlations between the various leptonic and hadronic flavor violating processes arising in SUSY Grand Unified Theories. Using the GUT-symmetric relations...
Status of the Cabibbo-Kobayashi-Maskawa matrix and Unitarity Triangle fits (2007)
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The status of the Unitarity Triangle analysis realized by the UTfit Collaboration is presented. The most recent determinations of theoretical and experimental parameters are used in order to...
Status of the Cabibbo-Kobayashi-Maskawa matrix and Unitarity Triangle fits (2007)
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The status of the Unitarity Triangle analysis realized by the UTfit Collaboration is presented. The most recent determinations of theoretical and experimental parameters are used in order to...
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
Using the latest determinations of several theoretical and experimental parameters, we update the Unitarity Triangle analysis in the Standard Model. The basic experimental constraints come from the...
Constraints on New Physics from the Quark Mixing Unitarity Triangle (2006)
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The status of the unitary triangle beyond the standard model including the most recent results on Delta_ms on dilepton asymmetries and on width differences is presented. Even allowing for general new...
$b \to s \gamma$ and $b \to sg (2006)
Ciuchini, M, Franco, E, Martinelli, G, Reina, L, Silvestrini, L
Allanach, B. C., Grojean, C., Skands, P., Accomando, E., Azuelos, G., Baer, H., ...
The work contained herein constitutes a report of the "Beyond the Standard Model'' working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. We present reviews...
Ciuchini, M., Franco, E., Guadagnoli, D., Lubicz, V., Porretti, V., Silvestrini, L.
We compute the next-to-leading order strong interaction corrections to gluino-mediated Delta F=2 box diagrams in the Minimal Supersymmetric Standard Model. These corrections are given by two loop...
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The recent measurements of the B_s meson mixing amplitude by CDF and of the leptonic branching fraction BR(B to tau nu) by Belle call for an upgraded analysis of the Unitarity Triangle in the...
Constraints on new physics from the quark mixing unitarity triangle (2006)
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The status of the Unitarity Triangle beyond the Standard Model including the most recent results on Delta m_s, on dilepton asymmetries and on width differences is presented. Even allowing for general...
Upper bounds on SUSY contributions to b to s transitions from B_s - B_sbar mixing (2006)
We study the constraints on supersymmetric contributions to b to s transitions from the recent allowed range and measurement of Bs-Bsbar mixing obtained by the D0 and CDF collaborations at the...
Angles from $B$ Decays with Charm (2006)
Cavoto, G., Fleischer, R., Gershon, T., Soni, A., Abe, K., Albert, J., ...
The main goal is the measurement of the angles γ and β from B decays involving D or charmonium mesons. The limitations and ways to overcome them will be discussed, as well as new approaches...
Angles from $B$ Decays with Charm (2006)
Cavoto, G., Fleischer, R., Gershon, T., Soni, A., Abe, K., Albert, J., ...
Proceedings of the CKM 2005 Workshop (WG5), UC San Diego, 15-18 March 2005.
SuperB: a linear high-luminosity B Factory (2006)
Albert, J., Bettarini, S., Biagini, M., Bonneaud, G., Cai, Y., Calderini, G., ...
This paper is based on the outcome of the activity that has taken place during the recent workshop on "SuperB in Italy" held in Frascati on November 11-12, 2005. The workshop was opened by a...
Accomando, E, Azuelos, Georges, Baer, H, Balázs, C, Bélanger, G, Benakli, Karim, ...
The work contained herein constitutes a report of the "Beyond the Standard Model'' working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. We present reviews...
Hunting the CKM weak phase with time-integrated Dalitz analyses of Bs -> K pi pi decays (2006)
Ciuchini, M., Pierini, M., Silvestrini, L.
We present a new technique to extract information on the Unitarity Triangle from the study of Bs -> K pi pi Dalitz plot. Using isospin symmetry and the possibility to access the decay amplitudes from...
Allanach, B. C., Grojean, C., Skands, P., Accomando, E., Azuelos, G., Baer, H., ...
The work contained herein constitutes a report of the "Beyond the Standard Model'' working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. We present reviews...
New Bounds On The CKM Matrix From B -> K pi pi Dalitz Plot Analyses (2006)
Ciuchini, M., Pierini, M., Silvestrini, L.
We present a new technique to extract information on the Unitarity Triangle from the study of B -> K pi pi Dalitz plots. Using the sensitivity of Dalitz analyses to the absolute values and the phases...
Angles from $B$ Decays with Charm (2006)
Cavoto, G., Fleischer, R., Gershon, T., Soni, A., Abe, K., Albert, J., ...
The main goal is the measurement of the angles γ and β from B decays involving D or charmonium mesons. The limitations and ways to overcome them will be discussed, as well as new approaches...
Angles from $B$ Decays with Charm (2006)
Cavoto, G., Fleischer, R., Gershon, T., Soni, A., Abe, K., Albert, J., ...
The main goal is the measurement of the angles γ and β from B decays involving D or charmonium mesons. The limitations and ways to overcome them will be discussed, as well as new approaches...
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The status of the Unitarity Triangle beyond the Standard Model including the most recent results on Delta m_s, on dilepton asymmetries and on width differences obtained at the B factories and at the...
Allanach, B. C., Grojean, C., Skands, P., Accomando, E., Azuelos, G., Baer, H., ...
The work contained herein constitutes a report of the "Beyond the Standard Model'' working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. We present reviews...
Allanach, B. C., Grojean, C., Skands, P., Accomando, E., Azuelos, G., Baer, H., ...
The work contained herein constitutes a report of the "Beyond the Standard Model'' working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. We present reviews...
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
The status of the Unitarity Triangle beyond the Standard Model including the most recent results on Delta m_s, on dilepton asymmetries and on width differences obtained at the B factories and at the...
SuperB: a linear high-luminosity B Factory (2005)
Albert, J., Bettarini, S., Biagini, M., Bonneaud, G., Cai, Y., Calderini, G., ...
This paper is based on the outcome of the activity that has taken place during the recent workshop on "SuperB in Italy" held in Frascati on November 11-12, 2005. The workshop was opened by a...
Ciuchini, M., Franco, E., Guadagnoli, D., Lubicz, V., Porretti, V., Silvestrini, L.
We present the NLO corrections to the Wilson coefficients of the Delta F = 2 Hamiltonians in the strong interacting sector of the MSSM, responsible for neutral meson oscillations. Such corrections,...
Upper Bounds on Rare K and B Decays from Minimal Flavour Violation (2005)
Bobeth, C., Bona, M., Buras, A.J., Ewerth, T., Pierini, M., Silvestrini, L., ...
We study the branching ratios of rare K and B decays in models with minimal flavour violation, using the presently available information from the universal unitarity triangle analysis and from the...
Upper Bounds on Rare K and B Decays from Minimal Flavour Violation (2005)
Bobeth, C., Bona, M., Buras, A.J., Ewerth, T., Pierini, M., Silvestrini, L., ...
We study the branching ratios of rare K and B decays in models with minimal flavour violation, using the presently available information from the universal unitarity triangle analysis and from the...
Upper Bounds on Rare K and B Decays from Minimal Flavour Violation (2005)
Bobeth, C., Bona, M., Buras, A.J., Ewerth, T., Pierini, M., Silvestrini, L., ...
We study the branching ratios of rare K and B decays in models with minimal flavour violation, using the presently available information from the universal unitarity triangle analysis and from the...
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
Starting from a (new physics independent) tree level determination of rhobar and etabar, we perform the Unitarity Triangle analysis in general extensions of the Standard Model with arbitrary new...
The Effect of Penguins in the B_d to J/psi K^0 CP asymmetry (2005)
Ciuchini, M., Pierini, M., Silvestrini, L.
Performing a fit to the available experimental data, we quantify the effect of long-distance contributions from penguin contractions in B^0 to J/psi K^0 decays. We estimate the deviation of the...
The Discovery Potential of a Super B Factory (2005)
Hewett, JoAnne. L., Hitlin, David G., Abe, T., Agashe, K., Albert, J., Ali, A., ...
The Proceedings of the 2003 SLAC Workshops on flavor physics with a high luminosity asymmetric e+e- collider. The sensitivity of flavor physics to physics beyond the Standard Model is addressed in...
Minimal gauge-Higgs unification with a flavour symmetry (2005)
Martinelli, G., Salvatori, M., Scrucca, C. A., Silvestrini, L.
We show that a flavour symmetry a la Froggatt-Nielsen can be naturally incorporated in models with gauge-Higgs unification, by exploiting the heavy fermions that are anyhow needed to realize...
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
Using the latest determinations of several theoretical and experimental parameters, we update the Unitarity Triangle analysis in the Standard Model. The basic experimental constraints come from the...
SuperB: a linear high-luminosity B Factory (2005)
Albert, J., Bettarini, S., Biagini, M., Bonneaud, G., Cai, Y., Calderini, G., ...
This paper is based on the outcome of the activity that has taken place during the recent workshop on "SuperB in Italy" held in Frascati on November 11-12, 2005. The workshop was opened by a...
Upper Bounds on Rare K and B Decays from Minimal Flavour Violation (2005)
Bobeth, C., Bona, M., Buras, A.J., Ewerth, T., Pierini, M., Silvestrini, L., ...
We study the branching ratios of rare K and B decays in models with minimal flavour violation, using the presently available information from the universal unitarity triangle analysis and from the...
SuperB: a linear high-luminosity B Factory (2005)
Albert, J., Bettarini, S., Biagini, M., Bonneaud, G., Cai, Y., Calderini, G., ...
This paper is based on the outcome of the activity that has taken place during the recent workshop on "SuperB in Italy" held in Frascati on November 11-12, 2005. The workshop was opened by a...
Upper Bounds on Rare K and B Decays from Minimal Flavour Violation (2005)
Bobeth, C., Bona, M., Buras, A.J., Ewerth, T., Pierini, M., Silvestrini, L., ...
We study the branching ratios of rare K and B decays in models with minimal flavour violation, using the presently available information from the universal unitarity triangle analysis and from the...
CKM-Triangle analysis: Updates and Novelties for Summer 2004 (2004)
Bona, UTfit Collaboration: M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., ...
Using the most recent determinations of several theoretical and experimental parameters, we update the Unitarity Triangle analysis in the Standard Model. The basic experimental constraints come from...
Two-body nonleptonic B decays in the Standard Model and beyond (2004)
Ciuchini, M., Franco, E., Martinelli, G., Masiero, A., Pierini, M., Silvestrini, L.
We briefly discuss the phenomenology of B to pi pi, B to K pi and B to phi K decays in the Standard Model and in Supersymmetry.
Gauge-Higgs Unification in Orbifold Models (2004)
Scrucca, C A, Serone, M, Silvestrini, L, Wulzer, A
Six-dimensional orbifold models where the Higgs field is identified with some internal component of a gauge field are considered. We classify all possible T^2/Z_N orbifold constructions based on a...
Gauge-Higgs Unification in Orbifold Models (2003)
Scrucca, C. A., Serone, M., Silvestrini, L., Wulzer, A.
Six-dimensional orbifold models where the Higgs field is identified with some internal component of a gauge field are considered. We classify all possible T^2/Z_N orbifold constructions based on a...
Worries and Hopes for SUSY in CKM Physics: The b to s Example (2003)
Ciuchini, M., Franco, E., Masiero, A., Silvestrini, L.
We discuss the twofold role of flavor and CP violation as a constraint in model building and as a signal of SUSY. Considering as an example b to s transitions, we analyze present bounds on SUSY...
Grand Unification of Quark and Lepton FCNCs (2003)
Ciuchini, M., Masiero, A., Silvestrini, L., Vempati, S. K., Vives, O.
In the context of Supersymmetric Grand Unified theories with soft breaking terms arising at the Planck scale, it is generally possible to link flavor changing neutral current and CP violating...
b to s transitions: where to look for SUSY (2003)
Ciuchini, M., Franco, E., Masiero, A., Silvestrini, L.
We present a systematic study of the CP conserving and violating SUSY contributions to b to s processes in a generic MSSM, considering gluino exchange contributions. Experimental information on B to...
Unitarity Triangle Analysis in the Standard Model and Sensitivity to New Physics (2003)
Ciuchini, M., Franco, E., Parodi, F., Lubicz, V., Silvestrini, L., Stocchi, A.
By using the most recent determinations of the several theoretical and experimental input parameters, we update the Unitarity Triangle analysis in the Standard Model and discuss the sensitivity to...
Electroweak symmetry breaking and fermion masses from extra dimensions (2003)
Scrucca, C A, Serone, M, Silvestrini, L
We study higher-dimensional non-supersymmetric orbifold models where the Higgs field is identified with some internal component of a gauge field. We address two important and related issues that...
The CKM Matrix and the Unitarity Triangle (2003)
Battaglia, Marco, Yamanda, N, Willocq, S, Wilkinson, G, Wilden, L H, Weiser, C, ...
This report contains the results of the Workshop on the CKM Unitarity Triangle, held at CERN on 13-16 February 2002 to study the determination of the CKM matrix from the available data of K, D, and B...
b -> s Transitions: A New Frontier for Indirect SUSY Searches (2002)
Ciuchini, M., Franco, E., Masiero, A., Silvestrini, L.
The present unitarity triangle fit, whose essential input is represented by the s to d and b to d transition processes, fully agrees with the SM. However, most of the phenomena involving b to s...
B Physics and Supersymmetry (2002)
In this talk, I briefly review a selection of SUSY effects in B physics. First, I consider models with Minimal Flavour Violation. Then I discuss SUSY models with new sources of flavour violation in...
Direct CP Violation in B->phi K_s and New Physics (2002)
In the presence of large New Physics contributions to loop-induced b->s transitions, sizable direct CP violation in B-> phi K decays is expected on general grounds. We compute explicitly CP-violating...
Ciuchini, M., Franco, E., Martinelli, G., Pierini, M., Silvestrini, L.
We briefly recall the main formulae for computing the B -> K pi branching ratios within the "charming penguin" approach, present an updated fit to the data, and explain why we believe that, in...
B_d-Bbar_d Mixing and the B_d -> J/psi K_s Asymmetry in General SUSY Models (2001)
Becirevic, D., Ciuchini, M., Franco, E., Gimenez, V., Martinelli, G., Masiero, A., ...
We present a next-to-leading order determination of the gluino-mediated SUSY contributions to B_d-Bbar_d mixing and to the CP asymmetry a_{J/psi K_s} in the framework of the mass-insertion...
Anomalies in orbifold field theories (2001)
Scrucca, Claudio A, Serone, M, Silvestrini, L, Zwirner, Fabio
We study the constraints on models with extra dimensions arising from local anomaly cancellation. We consider a five-dimensional field theory with a U(1) gauge field and a charged fermion,...
Anomalies in orbifold field theories (2001)
Scrucca, C. A., Serone, M., Silvestrini, L., Zwirner, F.
We study the constraints on models with extra dimensions arising from local anomaly cancellation. We consider a five-dimensional field theory with a U(1) gauge field and a charged fermion,...
Two Body B Decays, Factorization and LambdaQCD/mb Corrections (2001)
Ciuchini, M., Franco, E., Martinelli, G., Pierini, M., Silvestrini, L.
By using the recent experimental measurements of B -> pi pi and B -> K pi branching ratios, we find that the amplitudes computed at the leading order of the LambdaQCD/mb expansion disagree with the...
Non-local symmetry breaking in Kaluza-Klein theories (2001)
Masiero, A, Scrucca, Claudio A, Serone, M, Silvestrini, L
Scherk-Schwarz gauge symmetry breaking of a D-dimensional field theory model compactified on a circle is analyzed. It is explicitly shown that forbidden couplings in the unbroken theory appear in the...
Non-local symmetry breaking in Kaluza-Klein theories (2001)
Masiero, A., Scrucca, C. A., Serone, M., Silvestrini, L.
Scherk-Schwarz gauge symmetry breaking of a D-dimensional field theory model compactified on a circle is analyzed. It is explicitly shown that forbidden couplings in the unbroken theory appear in the...
Charming Penguins Strike Back (2001)
Ciuchini, M., Franco, E., Martinelli, G., Pierini, M., Silvestrini, L.
By using the recent experimental measurements of B to pi pi and B to K pi branching ratios, we find that factorization is unable to reproduce the observed BRs even taking into account the...
Signals of Supersymmetric Flavour Models in B Physics (2001)
Masiero, A., Piai, M., Romanino, A., Silvestrini, L.
If the mechanism of Supersymmetry breaking is not flavour blind, some flavour symmetry is likely to be needed to prevent excessive flavour changing neutral current effects. We discuss two flavour...
Penguin Contractions and Factorization in B -> K pi Decays (2001)
Ciuchini, M., Franco, E., Martinelli, G., Pierini, M., Silvestrini, L.
We study Lambda_{QCD}/m_B corrections to factorization in B -> K pi decays. First, we analyze these decay channels within factorization, showing that, irrespectively of the value of gamma, it is not...
epsilon'/epsilon and Rare K Decays in the Standard Model and Supersymmetry (2000)
After briefly reviewing the status of epsilon'/epsilon in the Standard Model, I discuss SUSY contributions to epsilon'/epsilon, K^+ to pi^+ nu bar nu, K_L to pi^0 nu bar nu and K_L to pi^0 e^+ e^-....
epsilon'/epsilon and Rare K and B Decays in the MSSM (2000)
Buras, A. J., Gambino, P., Gorbahn, M., Jager, S., Silvestrini, L.
We analyze the CP violating ratio epsilon'/epsilon and rare K and B decays in the MSSM with minimal flavour and CP violation, including NLO QCD corrections and imposing constraints on the...
Universal Unitarity Triangle and Physics Beyond the Standard Model (2000)
Buras, Andrzej J, Gambino, Paolo, Gorbahn, M, Jäger, S, Silvestrini, L
We make the simple observation that there exists a universal unitarity triangle for all models, like the SM, the Two Higgs Doublet Models I and II and the MSSM with minimal flavour violation, that do...
Universal Unitarity Triangle and Physics Beyond the Standard Model (2000)
Buras, A. J., Gambino, P., Gorbahn, M., Jager, S., Silvestrini, L.
We make the simple observation that there exists a universal unitarity triangle for all models, like the SM, the Two Higgs Doublet Models I and II and the MSSM with minimal flavour violation, that do...
Final State Interactions and epsilon'/epsilon: A Critical Look (2000)
Buras, A. J., Ciuchini, M., Franco, E., Isidori, G., Martinelli, G., Silvestrini, L.
We critically analyze recent attempts to include final state interaction (FSI) effects in the calculation of the CP violating ratio epsilon'/epsilon. In particular the approach of using the...
B -> Xs l+ l- decays in supersymmetry (2000)
Lunghi, Enrico, Masiero, Antonio, Scimemi, Ignazio, Silvestrini, L.
We study the semileptonic decays B -> Xs e+ e- and B -> Xs mu+ mu- in generic supersymmetric extensions of the Standard Model. SUSY effects are parameterized using the mass insertion approximation...
Nonleptonic $B$ Decays: Theoretical Viewpoint (1999)
I briefly review some recent progress in the theory of nonleptonic B decays. After introducing the operator product expansion and the relevant effective Hamiltonian, I discuss the domain of validity...
Nonleptonic $B$ Decays: Theoretical Viewpoint (1999)
I briefly review some recent progress in the theory of nonleptonic B decays. After introducing the operator product expansion and the relevant effective Hamiltonian, I discuss the domain of validity...
Penguin amplitudes: charming contributions (1999)
Ciuchini, M., Franco, E., Martinelli, G., Silvestrini, L.
We briefly introduce the Wick-contraction parametrization of hadronic matrix elements and discuss some applications to B and K physics.
Probing Supersymmetric Flavor Models with $\epsilon'/\epsilon$ (1999)
Eyal, G., Masiero, A., Nir, Y., Silvestrini, L.
We discuss the supersymmetric contribution to $\epsilon'/\epsilon$ in various supersymmetric flavor models. We find that in alignment models the supersymmetric contribution could be significant while...
Connections between epsilon'/epsilon and Rare Kaon Decays in Supersymmetry (1999)
Buras, A. J., Colangelo, G., Isidori, G., Romanino, A., Silvestrini, L.
We analyze the rare kaon decays $K_L \to \pi^0 \nu \bar \nu$, $K^+ \to \pi^+ \nu \bar \nu$, $K_L \to \pi^0 e^+ e^-$ and $K_L \to \mu^+ \mu^-$ in conjunction with the CP violating ratio...
B -> Xs l+ l- decays in supersymmetry (1999)
Lunghi, E., Masiero, A., Scimemi, I., Silvestrini, L.
We study the semileptonic decays B -> Xs e+ e- and B -> Xs mu+ mu- in generic supersymmetric extensions of the Standard Model. SUSY effects are parameterized using the mass insertion approximation...
Standard Model Confronting New Results for epsilon'/epsilon (1999)
Bosch, S., Buras, A. J., Gorbahn, M., Jäger, S., Jamin, M., Lautenbacher, M. E., ...
We analyze the CP violating ratio \epe=epsilon'/epsilon in the Standard Model in view of the new KTeV results. We review the present status of the most important non-perturbative parameters B_6, B_8,...
Delta M_K and epsilon_K in SUSY at the Next-to-Leading order (1998)
Ciuchini, M., Conti, L., Donini, A., Franco, E., Gimenez, V., Giusti, L., ...
We perform a Next-to-Leading order analysis of Delta S=2 processes beyond the Standard Model. Combining the recently computed NLO anomalous dimensions and the B parameters of the most general Delta...
We discuss the prospects for searches of low-energy supersymmetry in the time interval separating us from the advent of LHC. In this period of time "indirect" searches may play a very relevant role....
Pre-LHC SUSY Searches: an Overview (1998)
We discuss the prospects for searches of low-energy supersymmetry in the time interval separating us from the advent of LHC. In this period of time "indirect" searches may play a very relevant role....
Pre-LHC SUSY Searches: an Overview (1998)
We discuss the prospects for searches of low-energy supersymmetry in the time interval separating us from the advent of LHC. In this period of time "indirect" searches may play a very relevant role....
Model independent determination of the light-cone wave functions for exclusive processes (1998)
Aglietti, U., Ciuchini, M., Corbo', G., Franco, E., Martinelli, G., Silvestrini, L.
We present a method to compute, by numerical simulations of lattice QCD, the light-cone wave functions which enter exclusive processes at large momentum transfer, such as electromagnetic elastic...
Generalized Factorization in Non-leptonic Two-Body B-Decays: a Critical Look (1998)
We reanalyze critically the generalized factorization hypothesis in non-leptonic two-body B-decays discussed recently by several authors. In particular we address the determination of the...
Aglietti, U., Ciuchini, M., Corbo', G., Franco, E., Martinelli, G., Silvestrini, L.
We present a method to compute, by numerical simulations of lattice QCD, the inclusive semileptonic differential decay rates of heavy hadrons and the structure functions which occur in deep inelastic...
Factorization, charming penguins, and all that (1998)
Ciuchini, M., Contino, R., Franco, E., Martinelli, G., Silvestrini, L.
We discuss few selected topics related to the calculation of hadronic amplitudes relevant for two-body non-leptonic B decays.
$K \to \pi \nu \bar \nu$: A Model Independent Analysis and Supersymmetry (1997)
Buras, A. J., Romanino, A., Silvestrini, L.
We present a model independent analysis of new-physics contributions to the decays K^+ \to \pi^+ \nu \bar \nu and K_L \to \pi^0 \nu \bar \nu. We parameterize the effects of new physics in these...
Two Lectures on FCNC and CP Violation in Supersymmetry (1997)
These two lectures constitute a reappraisal and an update of the status of the Flavour Changing Neutral Current (FCNC) and CP violation issues in supersymmetry. The first lecture discusses these...
Next-to-Leading Order QCD Corrections to $\Delta F =2$ effective Hamiltonians (1997)
Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Scimemi, I., Silvestrini, L.
The most general QCD next-to-leading anomalous-dimension matrix of all possible four-fermion, dimension-six $\Delta F=2$ operators is computed. The results of this calculation can be used in many...
CP Violation in Low-Energy SUSY (1997)
We discuss CP violation in the context of the minimal SUSY extension of the standard model as well as in a generic low-energy SUSY model. After analyzing the SUSY contributions to the observed CP...
SUSY in Rare and CP-Violating B Decays (1997)
In this talk we discuss rare B decays (b -> s gamma, b -> s g, b -> s l^+ l^-), B-\bar{B} oscillations and CP violation in B physics in the context of low-energy SUSY. We outline the variety of...
Charming-penguin enhanced B decays (1997)
Ciuchini, M, Contino, Roberto, Franco, E, Martinelli, G, Silvestrini, L
Long-distance contributions of operators of the effective non-leptonic weak Hamiltonian containing charmed currents have been recently studied. Penguin-like contractions of these operators, denoted...
Charming-penguin enhanced B decays (1997)
Ciuchini, M., Contino, R., Franco, E., Martinelli, G., Silvestrini, L.
Long-distance contributions of operators of the effective non-leptonic weak Hamiltonian containing charmed currents have been recently studied. Penguin-like contractions of these operators, denoted...
CP Violating B Decays in the Standard Model and Supersymmetry (1997)
Ciuchini, M, Franco, E, Martinelli, G, Masiero, A, Silvestrini, L
We study the uncertainties of the Standard Model (SM) predictions for CP violating B decays and investigate where and how supersymmetric (SUSY) contributions may be disentangled. The first task is...
CP Violating B Decays in the Standard Model and Supersymmetry (1997)
Ciuchini, M., Franco, E., Martinelli, G., Masiero, A., Silvestrini, L.
We study the uncertainties of the Standard Model (SM) predictions for CP violating B decays and investigate where and how supersymmetric (SUSY) contributions may be disentangled. The first task is...
Flavour changing top decays in supersymmetric extensions of the standard model (1997)
De Divitiis, G. M., Petronzio, R., Silvestrini, L.
Flavour changing top decays $t \to c Z^0, t \to c g$ and $t \to c \gamma$ are predicted with invisible rates within the standard model and may represent a window on new physics. We consider these...
Charming Penguins in B decays (1997)
Ciuchini, M, Franco, E, Martinelli, G, Silvestrini, L
Full expressions of the $B^0_d \to \pi^+ \pi^-$ and $B^0_d \to \pi^0 \pi^0$ amplitudes, given in terms of matrix elements of operators of the effective weak Hamiltonian, are used to study the...
Charming Penguins in B decays (1997)
Ciuchini, M., Franco, E., Martinelli, G., Silvestrini, L.
Full expressions of the $B^0_d \to \pi^+ \pi^-$ and $B^0_d \to \pi^0 \pi^0$ amplitudes, given in terms of matrix elements of operators of the effective weak Hamiltonian, are used to study the...
B physics represents a privileged place to look for supersymmetry (SUSY) through its virtual effects. Here we discuss rare B decays ($b \to s \gamma$, $b \to s g$, $b \to s l^{+} l^{-}$) and...
Non-leptonic weak decays and final state interactions in lattice QCD (1996)
We show that, under a reasonable "smoothness" hypothesis, it is possible to extract informations on the amplitude and phase of two-body non-leptonic weak decay matrix elements from the study of...
Fermion Virtual Effects in $e^+ e^- -> W^+ W^-$ Cross Section (1996)
Culatti, A., Degrassi, G., Feruglio, F., Masiero, A., Rigolin, S., Silvestrini, L., ...
We analyse the contribution of new heavy virtual fermions to the $e^+e^- \rightarrow W^+W^-$ cross section. We find that there exists a relevant interplay between trilinear and bilinear oblique...
Probing SUSY in FCNC and CP Violating Phenomena (1996)
We analyze constraints on low-energy flavour-changing sfermion mass terms, coming from FCNC and CP violating processes, in the model-independent framework of the mass insertion method. We discuss the...
Gabbiani, F., Gabrielli, E., Masiero, A., Silvestrini, L.
We analyze the full set of constraints on gluino- and photino-mediated SUSY contributions to FCNC and CP violating phenomena. We use the mass insertion method, hence providing a model-independent...
Two-body non-leptonic decays on the lattice (1996)
Ciuchini, M, Franco, E, Martinelli, G, Silvestrini, L
We show that, under reasonable hypotheses, it is possible to study two-body non-leptonic weak decays in numerical simulations of lattice QCD. By assuming that final-state interactions are dominated...
Two-body non-leptonic decays on the lattice (1996)
Ciuchini, M., Franco, E., Martinelli, G., Silvestrini, L.
We show that, under reasonable hypotheses, it is possible to study two-body non-leptonic weak decays in numerical simulations of lattice QCD. By assuming that final-state interactions are dominated...
Searches for new physics (1996)
Giudice, Gian Francesco, Mangano, Michelangelo L, Ridolfi, G, Rückl, R, Ambrosanio, S, Asai, S, ...
Review of prospects for discovery of new physics signals at LEP2. The areas covered include SUSY, exotic fermions, BESS models, leptoquarks, virtual effects and CP violating observables.
Constraints on supersymmetry from FCNC and CP violation (1995)
Gabrielli, E., Masiero, A., Silvestrini, L.
We consider FCNC and CP violating processes mediated by gluino exchange in generalized supersymmetric theories. We present the constraints on flavour (F) changing squark mass terms at the electroweak...
Gabrielli, E., Masiero, A., Silvestrini, L.
We consider supersymmetric extensions of the standard model with general non-universal soft breaking terms. We analyse in a model-independent way the constraints on these terms at the electroweak...
An upgraded analysis of $\varepsilon$'/$\varepsilon$ at the next-to-leading order (1995)
Ciuchini, M, Franco, E, Martinelli, G, Reina, L, Silvestrini, L
An upgraded analysis of \ep, x_d and \epp/\ep, using the latest determinations of the relevant experimental and theoretical parameters is presented. Using the recent determination of the top quark...
An Upgraded Analysis of $\epsilon\prime/\epsilon$ at the Next-to-Leading Order (1995)
Ciuchini, M., Franco, E., Martinelli, G., Reina, L., Silvestrini, L.
An upgraded analysis of $\ep$, $x_d$ and $\epp/\ep$, using the latest determinations of the relevant experimental and theoretical parameters, is presented. Using the recent determination of the top...
b --> s$\gamma$ and b --> s g: a theoretical reappraisal (1994)
Ciuchini, M, Franco, E, Martinelli, G, Reina, L, Silvestrini, L
We present upgraded theoretical predictions for inclusive and exclusive radiative decays of {\it B} mesons. Our results include those next-to-leading order corrections that have already been...
$b \rightarrow s \gamma$ AND $b \rightarrow s g$: A THEORETICAL REAPPRAISAL (1994)
Ciuchini, M., Franco, E., Martinelli, G., Reina, L., Silvestrini, L.
We present upgraded theoretical predictions for inclusive and exclusive radiative decays of {\it B} mesons. Our results include those next-to-leading order corrections that have already been...
Ciuchini, M., Franco, E., Reina, L., Silvestrini, L.
We discuss in detail the calculation of the leading order QCD corrections to the Effective Hamiltonian which governs $b \rightarrow s\, \gamma$ and $b \rightarrow s \, g$ transitions in three...
Ciuchini, M., Franco, E., Martinelli, G., Reina, L., Silvestrini, L.
We present a calculation of the effective weak Hamiltonian which governs $b \rightarrow s\, \gamma$ and $b \rightarrow s \, g$ transitions in two different renormalization schemes (NDR and HV). In...
THE CKM MATRIX AND THE UNITARITY TRIANGLE
Abbaneo,D., Ali,A., Amaral,P., Andreev,V., Artuso,M., Barberio,E., ...
This report contains the results of the Workshop on the CKM Unitarity Triangle, held at CERN on 13-16 February 2002 to study the determination of the CKM matrix from the available data of K, D, and B...
THE CKM MATRIX AND THE UNITARITY TRIANGLE
Abbaneo, D., Ali, A., Amaral, P., Andreev, V., Artuso, M., Barberio, E., ...
This report contains the results of the Workshop on the CKM Unitarity Triangle, held at CERN on 13-16 February 2002 to study the determination of the CKM matrix from the available data of K, D, and B...