Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond (2008)
Altmannshofer, Wolfgang, Ball, Patricia, Bharucha, Aoife, Buras, Andrzej J., Straub, David M., Wick, Michael
The rare decay B -> K* (-> K pi) mu+ mu- is regarded as one of the crucial channels for B physics as the polarization of the K* allows a precise angular reconstruction resulting in many observables...
Distribution Amplitudes of the Lambda_b Baryon in QCD (2008)
Ball, Patricia, Braun, Vladimir M., Gardi, Einan
The QCD description of exclusive decays of the $\Lambda_b$ baryon involves hadronic matrix elements of non-local light ray operators, the light-cone distribution amplitudes. We introduce the complete...
Twist-4 Distribution Amplitudes of the K$^*$ and $\phi$ Mesons in QCD (2007)
Ball, Patricia, Braun, V. M., Lenz, A.
We present a systematic study of twist-4 light-cone distribution amplitudes of the $K^*$ and $\phi$ meson in QCD. The structure of SU(3)-breaking corrections is studied in detail. Non-perturbative...
B->eta(') Form Factors in QCD (2007)
We calculate the semileptonic form factors $f_+^{B\to \eta}(q^2)$ and $f_+^{B\to \eta'}(q^2)$ from QCD sum rules on the light-cone (LCSRs), to NLO in QCD, and for small to moderate q^2, $0\leq...
|V_{ub}| from the Spectrum of B->pi e nu (2007)
I discuss the results for $|V_{ub}|f_+(0)$ and $|V_{ub}|$ obtained from the spectrum of $B\to\pi e \nu$ and the form factor $f_+(q^2)$ from QCD sum rules on the light-cone and unquenched lattice...
Implication of the D^0 Width Difference On CP-Violation in D^0-\bar D^0 Mixing (2007)
Both BaBar and Belle have found evidence for a non-zero width difference in the $D^0$-$\bar D^0$ system. Although there is no direct experimental evidence for CP-violation in $D$ mixing (yet), we...
Basics of D0-\bar D0 Mixing (2007)
Complementing the presentations, at this conference, of the first experimental evidence for $D$ mixing found at BaBar and Belle, I discuss the theoretical status of $D$ mixing.
Probing New Physics Through Bs Mixing (2007)
I discuss the interpretation of the recent experimental data on $B_s$ mixing in terms of model-independent new-physics parameters.
Twist-3 Distribution Amplitudes of K* and phi Mesons (2007)
We present a systematic study of twist-3 light-cone distribution amplitudes of $K^*$ and $\phi$ mesons in QCD. The structure of SU(3)-breaking corrections is studied in detail. Non-perturbative input...
Constraints on New Physics from gamma and |V_ub| (2006)
The SM unitarity triangle (UT) is completely determined by the parameters $\gamma$ and $|V_{ub}|$ which can be extracted from tree-level processes and are assumed to be free of new physics. By...
|V_td/V_ts| from QCD Sum Rules on the Light-Cone (2006)
The dominant theoretical uncertainty in extracting $|V_{td}/V_{ts}|$ from the ratio of branching ratios $R_{\rho/\omega}\equiv\bar{\cal B}(B\to (\rho,\omega)\gamma)/\bar{\cal B}(B\to K^* \gamma)$ is...
|V_{ub}| from B-> pi e nu (2006)
I discuss the results for $|V_{ub}|$ obtained from $B\to\pi e \nu$ using the form factor $f_+(q^2)$ from QCD sum rules on the light-cone and unquenched lattice calculations; the shape of $f_+(q^2)$...
B->V gamma Beyond QCD Factorisation (2006)
Ball, Patricia, Jones, Gareth W., Zwicky, Roman
We calculate the main observables in $B_{u,d}\to (\rho,\omega,K^*)\gamma$ and $B_s\to (\bar K^*,\phi)\gamma$ decays, i.e. branching ratios and CP and isospin asymmetries. We include QCD factorisation...
|V_ub| from UTangles and B->pi l nu (2006)
The angles of the CKM unitarity triangle are now known well enough to allow a determination of its sides from global fits, with good accuracy. Assuming that new physics does not affect the angles,...
Time-dependent CP Asymmetry in B->K* gamma as a (Quasi) Null Test of the Standard Model (2006)
We calculate the dominant Standard Model contributions to the time-dependent CP asymmetry in B0->K*0 gamma, which is O(1/mb) in QCD factorisation. We find that, including all relevant hadronic...
Testing QCD Sum Rules on the Light-Cone in D->(pi,K) l nu Decays (2006)
We compare the predictions for the form factors f_+^{D->pi,K}(0) from QCD sum rules on the light-cone with recent experimental results. We find f_+^{D->pi}(0) = 0.63\pm 0.11, f_+^{D->K}(0) = 0.75\pm...
B -> K* gamma vs B -> rho gamma and |V_td/V_ts| (2006)
We determine |V_{\rm td}/V_{\rm ts}| = 0.192 \pm 0.016_ exp \pm 0.014_th from B -> (K^*,rho) gamma as measured by the B-factories Babar and Belle. This version differs from the original proceedings...
Probing New Physics through B Mixing: Status, Benchmarks and Prospects (2006)
Ball, Patricia, Fleischer, Robert
As is well known, $B^0_{d,s}$--$\bar B^0_{d,s}$ mixing offers a profound probe into the effects of physics beyond the Standard Model. The data obtained at the $e^+e^-$ $B$ factories have already...
|V_td/V_ts| from B-> V gamma (2006)
The dominant theoretical uncertainty in extracting |V_td/V_ts| from the ratio of branching ratios R=B(B->(rho,omega)gamma)/B(B->K* gamma) is given by the ratio of form factors...
Higher-Twist Distribution Amplitudes of the K Meson in QCD (2006)
Ball, Patricia, Braun, V. M., Lenz, A.
We present a systematic study of twist-3 and twist-4 light-cone distribution amplitudes of the K meson in QCD. The structure of SU(3)-breaking corrections is studied in detail. Non-perturbative input...
Operator Relations for SU(3) Breaking Contributions to K and K* Distribution Amplitudes (2006)
We derive constraints on the asymmetry a1 of the momentum fractions carried by quark and antiquark in K and K* mesons in leading twist. These constraints follow from exact operator identities and...
SU(3) Breaking of Leading--Twist K and K* Distribution Amplitudes - a Reprise (2005)
We review the status of the leptonic decay constants f_K and f_K^{\parallel,\perp} of the K and K*, respectively, and the SU(3) breaking quantities a_1(K) and a_{1}^{\parallel,\perp}(K*), the first...
|V_ub| and Constraints on the Leading-Twist Pion Distribution Amplitude from B->pi l nu (2005)
Using new experimental data on the leptonic mass spectrum of B->pi l nu, we simultaneously determine |V_ub| and constrain a_2^pi and a_4^pi, the first two Gegenbauer moments of the pion's...
Models for Light-Cone Meson Distribution Amplitudes (2005)
Ball, Patricia, Talbot, Angelique
Leading-twist distribution amplitudes (DAs) of light mesons like pi,rho etc. describe the leading nonperturbative hadronic contributions to exclusive QCD reactions at large energy transfer, for...
B_{d,s}->rho, omega, K*, phi Decay Form Factors from Light-Cone Sum Rules Revisited (2004)
We present an improved calculation of $B\to$ light vector form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading order...
The Theory of CP-Violation -- in as Much of a Nutshell as Will Fit on 8 Pages (2004)
Do you know that CP violation is intrinsically linked to the scalar sector of the Standard Model and its extensions? If yes, you need read no further - if no, you may turn over the titlepage and...
B->pi,K,eta Decay Formfactors from Light-Cone Sum Rules (2004)
We present an improved calculation of all B -> light pseudoscalar formfactors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading...
New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules (2004)
We present an improved calculation of $B\to$ light pseudoscalar formfactors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading order...
QCD Sum Rules on the Light-Cone, Factorisation and SCET (2003)
The accurate calculation of weak heavy-to-light form factors is crucial for the determination of CKM matrix elements from experimental data on B decays. In SCET, the soft-collinear effective theory,...
SU(3) Breaking in K and K* Distribution Amplitudes (2003)
We calculate the decay couplings and first two Gegenbauer moments of the leading twist light-cone distribution amplitudes of K and K* from QCD sum rules, including NLO perturbative effects.
Weak Decay Form Factors from QCD Sum Rules on the Light-Cone (2003)
I present a compilation of results on B->light meson form factors from QCD sum rules on the light-cone.
B->gamma e nu Transitions from QCD Sum Rules (2003)
B->gamma e nu transitions have recently been studied in the framework of QCD factorization. The attractiveness of this channel for such an analysis lies in the fact that, at least in the heavy quark...
Improved Analysis of B->pi e nu from QCD Sum Rules on the Light-Cone (2001)
We present a new calculation of the B->pi form-factor f_+, relevant for the measurement of |V_{ub}| from semileptonic B->pi transitions, from QCD sum rules on the light-cone. The new element is the...
A Note on Wandzura-Wilczek Relations (2001)
Wandzura-Wilczek (WW) relations between matrix-elements of bilocal light-ray operators have recently regained interest in connection with off-forward scattering processes. Originally derived for...
Current Topics in B Physics (2000)
I discuss topics of particular interest in connection with the ongoing experiments at the B factories BaBar and Belle: B-mixing, QCD effects in nonleptonic decays and rare decays.
Spontaneous CP Violation in the Left-Right-Symmetric Model (2000)
We investigate the pattern of CP violation in \Kd, \Bd and \Bs mixing in a symmetrical \model model with spontaneous CP violation. Performing a careful analysis of all relevant restrictions on the...
An Analysis of B_s Decays in the Left-Right-Symmetric Model with Spontaneous CP Violation (1999)
Ball, Patricia, Fleischer, Robert
Non-leptonic B_s decays into CP eigenstates that are caused by \bar b -> \bar cc\bar s quark-level transitions, such as B_s -> D_s^+D^-_s, J/psi eta^(') or J/psi phi, provide a powerful tool to...
Ali, A., Ball, Patricia, Handoko, L. T., Hiller, G.
Using improved theoretical calculations of the decay form factors in the Light Cone-QCD sum rule approach, we investigate the decay rates, dilepton invariant mass spectra and the forward-backward...
We investigate the pattern of CP violation in K, B_d and B_s mixing in a symmetrical SU(2)_R x SU(2)_L x U(1) model with spontaneous CP violation. We calculate the phases of the left and right quark...
We discuss the two and three particle light-cone distribution amplitudes (DAs) of pseudoscalar nonsinglet mesons of twist 3 and 4. Using nonlocal operator identities and conformal expansion, we...
We present a systematic study of twist-4 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. The structure of meson mass corrections is studied in...
We present a systematic study of twist-4 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. The structure of meson mass corrections is studied in...
We present a systematic study of twist-4 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. The structure of meson mass corrections is studied in...
We present a systematic study of twist-4 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. The structure of meson mass corrections is studied in...
Handbook Of Higher Twist Distribution Amplitudes Of Vector Mesons In Qcd (1998)
this report we denote the meson momentum by P ¯ and introduce the light-like vectors p and z such that p ¯ = P¯ Gamma
Handbook Of Higher Twist Distribution Amplitudes Of Vector Mesons In Qcd (1998)
this report we denote the meson momentum by P ¯ and introduce the light-like vectors p and z such that p ¯ = P¯ Gamma
Handbook Of Higher Twist Distribution Amplitudes Of Vector Mesons In Qcd (1998)
this report we denote the meson momentum by P ¯ and introduce the light-like vectors p and z such that p ¯ = P¯ Gamma
Handbook of Higher Twist Distribution Amplitudes of Vector Mesons in QCD (1998)
We give a summary of existing results on higher twist distribution amplitudes of vector mesons in QCD. Special attention is payed to meson mass corrections which turn out to be large. A ``shopping...
Exclusive Semileptonic and Rare B-Meson Decays in QCD (1998)
: We present the first complete results for the semileptonic and rare radiative form factors of B-mesons weak decay into a light vector-meson (ae; !; K ; OE) in the light-cone sum-rule approach. The...
Exclusive Semileptonic and Rare B-Meson Decays in QCD (1998)
: We present the first complete results for the semileptonic and rare radiative form factors of B-mesons weak decay into a light vector-meson (ae; !; K ; OE) in the light-cone sum-rule approach. The...
Exclusive Semileptonic and Rare B-Meson Decays in QCD (1998)
: We present the first complete results for the semileptonic and rare radiative form factors of B-mesons weak decay into a light vector-meson (ae; !; K ; OE) in the light-cone sum-rule approach. The...
Phenomenological Evidence for the Gluon Content of (1998)
: We discuss the effect of j--j 0 mixing and of axial current anomalies on various decay processes. We describe the 2fl decays of j and j 0 , the radiative decays of low-lying vector mesons as well...
Exclusive Semileptonic and Rare B-Meson Decays in QCD (1998)
We present the first complete results for the semileptonic and rare radiative form factors of B-mesons weak decay into a light vector-meson (rho, omega, K*, phi) in the light-cone sum-rule approach....
Theoretical Update of the Semileptonic Branching Ratio of B Mesons (1998)
E. Bagan, Patricia Ball, V. M. Braun
: We reconsider the prediction of the semileptonic branching ratio of B mesons, using the recent calculation [1] of the radiative corrections with account for finite quark masses in nonleptonic...
Due to its comparatively theoretical "simplicity", the decay channel B ! aee offers one of the best possibilities to determine the CKM matrix element jV ub j accurately. I present a new calculation...
B decays into light mesons (1998)
I calculate the form factors describing semileptonic and penguin induced decays of B mesons into light pseudoscalar and vector mesons. The form factors are calculated from QCD sum rules on the...
B->pi and B->K Transitions from QCD Sum Rules on the Light-Cone (1998)
I calculate the form factors describing semileptonic and penguin-induced decays of B mesons into light pseudoscalar mesons. The form factors are calculated from QCD sum rules on the light-cone...
Patricia Ball, V. M. Braun, Y. Koike, K. Tanaka
: We present a systematic study of twist three light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion and takes into account meson and quark mass...
Patricia Ball, V. M. Braun, Y. Koike, K. Tanaka
: We present a systematic study of twist three light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion and takes into account meson and quark mass...
Ball, Patricia, Braun, V. M., Koike, Y., Tanaka, K.
We present a systematic study of twist three light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion and takes into account meson and quark mass corrections....
Use and Misuse of QCD Sum Rules in Heavy-to-light Transitions: the Decay (1997)
: The existing calculations of the form factors describing the decay B ! aee from QCD sum rules have yielded conflicting results at small values of the invariant mass squared of the lepton pair. We...
Radiative Corrections to the Decay (1997)
: We calculate radiative corrections to the light-cone sum rule for the semileptonic form factor in B ! ße decays and thus remove the major uncertainty in determining the CKM mixing angle jV ub j by...
Meson Light-Cone Distribution Amplitudes of Leading Twist Revisited (1997)
: We give a complete re-analysis of the leading twist quark-antiquark light-cone distribution amplitudes of longitudinal and transverse ae mesons. We derive Wandzura-Wilczek type relations between...
Use and Misuse of QCD Sum Rules in Heavy-to-light Transitions: the Decay (1997)
: The existing calculations of the form factors describing the decay B ! aee from QCD sum rules have yielded conflicting results at small values of the invariant mass squared of the lepton pair. We...
Meson Light-Cone Distribution Amplitudes of Leading Twist Revisited (1997)
: We give a complete re-analysis of the leading twist quark-antiquark light-cone distribution amplitudes of longitudinal and transverse ae mesons. We derive Wandzura-Wilczek type relations between...
Radiative Corrections to the Decay (1997)
: We calculate radiative corrections to the light-cone sum rule for the semileptonic form factor in B ! ße decays and thus remove the major uncertainty in determining the CKM mixing angle jV ub j by...
The most promising ways to measure V_ub (1997)
I review currently discussed methods to determine the CKM mixing matrix element $|V_{ub}|$ from experimental data. Although the theory of inclusive decays and their spectra has entered a...
The existing calculations of the form factors describing the decay $B\to\rho e \nu$ from QCD sum rules have yielded conflicting results at small values of the invariant mass squared of the lepton...
The Exclusive Decay $B\to\rho e \nu$ Beyond Model Calculations (1996)
Due to its comparatively theoretical ``simplicity'', the decay channel $B\to\rho e \nu$ offers one of the best possibilities to determine the CKM matrix element $|V_{ub}|$ accurately. I present a new...
Phenomenological Evidence for the Gluon Content of $\eta$ and $\eta'$ (1995)
We discuss the effect of $\eta$--$\eta'$ mixing and of axial current anomalies on various decay processes. We describe the 2$\gamma$ decays of $\eta$ and $\eta'$, the radiative decays of low-lying...
$|V_{cb}|$ from inclusive semileptonic B decays (1995)
We determine $|V_{cb}|$ from inclusive semileptonic B decays including resummation of supposedly large perturbative corrections, which originate from the running of the strong coupling. We argue that...
Next-to-leading Order Radiative Corrections to the Decay $b\to ccs$ (1995)
Bagan, E., Ball, Patricia, Fiol, B., Gosdzinsky, P.
We calculate the complete ${\cal O}(\alpha_s)$ corrections to the quark decay $b\to ccs$ taking full account of the quark masses, but neglecting penguin contributions. For a c to the b quark mass...
Theoretical Update of the Semileptonic Branching Ratio of B Mesons (1994)
Bagan, E., Ball, Patricia, Braun, V. M., Gosdzinsky, P.
We reconsider the prediction of the semileptonic branching ratio of B mesons, using a recent calculation of the radiative corrections with account for finite quark masses in nonleptonic decays and...
The Decay $B\to K^*\gamma$ from QCD Sum Rules (1993)
Using the QCD sum rules approach and the complete leading--logarithmic short--distance coefficients determining the penguin--amplitude, we obtain $B(B\to K^*\gamma) = (6.8\pm 2.4)\cdot 10^{-5}$ for...
The Semileptonic Decays $D\to \pi(\rho) e \nu$ and $B\to \pi (\rho) e \nu$ from QCD Sum Rules (1993)
We investigate the semileptonic decays of B and D mesons into $\pi$ and $\rho$ mesons, respectively, by means of QCD sum rules. We find that for the vector formfactors involved the pole dominance...
Semileptonische Zerfälle schwerer Mesonen und QCD-Summenregeln. (1992)
Heidelberg, Univ., Diss., 1992.
Fred Toyosaburo Korematsu:--a citizen's search for civil rights, 1942-1945. (1970)
Thesis (M.A. in Hist.)--Calif. State College, Hayward.