Nason, P, Ambroglini, F, Armillis, R, Azzi, P, Bagliesi, G, Ballestrero, A, ...
These proceedings collect the presentations given at the first three meetings of the INFN "Workshop on Monte Carlo's, Physics and Simulations at the LHC", held at the Frascati National Laboratories...
Proceedings of the Workshop on Monte Carlo's, Physics and Simulations at the LHC PART II (2009)
Ambroglini, F., Armillis, R., Azzi, P., Bagliesi, G., Ballestrero, A., Balossini, G., ...
These proceedings collect the presentations given at the first three meetings of the INFN "Workshop on Monte Carlo's, Physics and Simulations at the LHC", held at the Frascati National Laboratories...
Proceedings of the Workshop on Monte Carlo's, Physics and Simulations at the LHC PART I (2009)
Ambroglini, F., Armillis, R., Azzi, P., Bagliesi, G., Ballestrero, A., Balossini, G., ...
These proceedings collect the presentations given at the first three meetings of the INFN "Workshop on Monte Carlo's, Physics and Simulations at the LHC", held at the Frascati National Laboratories...
Review of particle physics (2008)
Particle Data Group, Amsler, C, Doser, M, Antonelli, M, Asner, DM, Babu, KS, ...
In this note I illustrate the program MINT, a FORTRAN program for Monte Carlo adaptive integration and generation of unweighted distributions.
Buttar, C, Dittmaier, S, Drollinger, V, Frixione, Stefano, Nikitenko, A, Abdullin, S W S, ...
This Report summarises the activities of the "SM and Higgs" working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. On the one hand, we performed a variety of...
Buttar, C., Dittmaier, S., Drollinger, V., Frixione, S., Nikitenko, A., Abdullin, S. Willenbrock S., ...
This Report summarises the activities of the "SM and Higgs" working group for the Workshop "Physics at TeV Colliders", Les Houches, France, 2-20 May, 2005. On the one hand, we performed a variety of...
A.C. Buttar, DESY Forschung Hochenergiephysik, S. Dittmaier, V. Drollinger, S. Frixione, A. Nikitenko, ...
Internal report | Preprint
QCD analysis of first b cross section data at 1.96 TeV (2005)
Cacciari, M., Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
The first data on bottom quark production in p-pbar collisions at 1.96 TeV have recently been obtained by the CDF collaboration. These data probe the region of pt~0, providing a new invaluable input...
A Study of Heavy Flavoured Meson Fragmentation Functions in e+ e- annihilation (2005)
Cacciari, M, Nason, P, Oleari, C
We compare QCD theoretical predictions for heavy flavoured mesons fragmentation spectra in e+ e- annihilation with data from CLEO, BELLE and LEP. We include several effects in our calculation:...
The Higgs Working Group: Summary Report 2003 (2005)
Assamagan, K. A., Narain, M., Nikitenko, A., Spira, M., Zeppenfeld, D., Alwall, J., ...
Theoretical progress in Higgs boson production and background processes is discussed with particular emphasis on QCD corrections at and beyond next-to-leading order as well as next-to-leading order...
The QCD/SM working group: summary report (2005)
Alekhin, S., Balazs, C., Ball, R., Binoth, T., Boos, E., Botje, M., ...
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop "Physics at TeV Colliders'', Les Houches, France, 21 May - 1 June...
The Higgs Working Group: Summary Report 2003 (2004)
Assamagan, K. A., Narain, M., Nikitenko, A., Spira, M., Zeppenfeld, D., Alwall, J., ...
Theoretical progress in Higgs boson production and background processes is discussed with particular emphasis on QCD corrections at and beyond next-to-leading order as well as next-to-leading order...
QCD analysis of first b cross section data at 1.96 TeV (2004)
Cacciari, M., Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
The first data on bottom quark production in p-pbar collisions at 1.96 TeV have recently been obtained by the CDF collaboration. These data probe the region of pt~0, providing a new invaluable input...
The Higgs Working Group: Summary Report 2003 (2004)
Assamagan, K. A., Narain, M., Nikitenko, A., Spira, M., Zeppenfeld, D., Alwall, J., ...
Theoretical progress in Higgs boson production and background processes is discussed with particular emphasis on QCD corrections at and beyond next-to-leading order as well as next-to-leading order...
The Higgs Working Group: Summary Report 2003 (2004)
Assamagan, K. A., Narain, M., Nikitenko, A., Spira, M., Zeppenfeld, D., Alwall, J., ...
Theoretical progress in Higgs boson production and background processes is discussed with particular emphasis on QCD corrections at and beyond next-to-leading order as well as next-to-leading order...
QCD analysis of first b cross section data at 1.96 TeV (2004)
Cacciari, M., Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
The first data on bottom quark production in p-pbar collisions at 1.96 TeV have recently been obtained by the CDF collaboration. These data probe the region of pt~0, providing a new invaluable input...
The QCD/SM working group: summary report (2004)
Alekhin, S., Balazs, C., Ball, R., Binoth, T., Boos, E., Botje, M., ...
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop ``Physics at TeV Colliders'', Les Houches, France, 21 May - 1 June...
QCD analysis of first b cross section data at 1.96 TeV (2003)
Cacciari, M, Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
The first data on bottom quark production in p-pbar collisions at 1.96 TeV have recently been obtained by the CDF collaboration. These data probe the region of pt~0, providing a new invaluable input...
QCD analysis of first b cross section data at 1.96 TeV (2003)
Cacciari, M, Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
The first data on bottom quark production in p-pbar collisions at 1.96 TeV have recently been obtained by the CDF collaboration. These data probe the region of pt~0, providing a new invaluable input...
QCD analysis of first b cross section data at 1.96 TeV (2003)
Cacciari, M., Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
The first data on bottom quark production in p-pbar collisions at 1.96 TeV have recently been obtained by the CDF collaboration. These data probe the region of pt~0, providing a new invaluable input...
Sudakov resummation of multiparton QCD cross sections (2003)
Bonciani, R, Catani, S, Mangano, Michelangelo L, Nason, P
We present the general expressions for the resummation, up to next-to-leading logarithmic accuracy, of Sudakov-type logarithms in processes with an arbirtrary number of hard-scattering partons. These...
Sudakov resummation of multiparton QCD cross sections (2003)
Bonciani, R., Catani, S., Mangano, M. L., Nason, P.
We present the general expressions for the resummation, up to next-to-leading logarithmic accuracy, of Sudakov-type logarithms in processes with an arbirtrary number of hard-scattering partons. These...
Soft-gluon resummation for Higgs boson production at hadron colliders (2003)
Catani, S, De Florian, D, Grazzini, M, Nason, P
We consider QCD corrections to Higgs boson production through gluon--gluon fusion in hadron collisions. We compute the cross section, performing the all-order resummation of multiple soft-gluon...
Soft-gluon resummation for Higgs boson production at hadron colliders (2003)
Catani, S., De Florian, D., Grazzini, M., Nason, P.
We consider QCD corrections to Higgs boson production through gluon--gluon fusion in hadron collisions. We compute the cross section, performing the all-order resummation of multiple soft-gluon...
Matching NLO QCD and parton showers in heavy flavour production (2003)
Frixione, Stefano, Nason, P, Webber, Bryan R
We apply the MC@NLO approach to the process of heavy flavour hadroproduction. MC@NLO is a method for matching next-to-leading order (NLO) QCD calculations and parton shower Monte Carlo (MC)...
Matching NLO QCD and parton showers in heavy flavour production (2003)
Frixione, S., Nason, P., Webber, B. R.
We apply the MC@NLO approach to the process of heavy flavour hadroproduction. MC@NLO is a method for matching next-to-leading order (NLO) QCD calculations and parton shower Monte Carlo (MC)...
On a possible measurement of alpha_s from B-Bbar correlations in Z^0 decay (2003)
Brandenburg, A., Nason, P., Oleari, C.
Motivated by recent preliminary results from the SLD Collaboration on the measurement of angle-dependent B-Bbar energy correlations in Z^0 -> b bbar events, we propose a class of observables that can...
Cacciari, M, Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
We update the theoretical predictions for the t-tbar production cross-section at the Tevatron, taking into account the most recent determinations of systematic uncertainties in the extraction of the...
Cacciari, M., Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
We update the theoretical predictions for the t-tbar production cross-section at the Tevatron, taking into account the most recent determinations of systematic uncertainties in the extraction of the...
The QCD/SM Working Group: Summary Report (2002)
Alekhin, S., Balazs, C., Ball, R., Binoth, T., Boos, E., Botje, M., ...
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop ``Physics at TeV Colliders'', Les Houches, France, 21 May - 1 June...
Is There a Significant Excess in Bottom Hadroproduction at the Tevatron? (2002)
We discuss the excess in the hadroproduction of B mesons at the Tevatron. We show that an accurate use of up-to-date information on the B fragmentation function reduces the observed excess to an...
Phenomenological study of charm photoproduction at HERA (2002)
We present predictions for single inclusive distributions of charmed mesons, relevant to the HERA experiments. Our results are based upon a computation that correctly incorporates mass effects up to...
B Physics at the Tevatron: Run II and Beyond (2002)
Anikeev, K., Atwood, D., Azfar, F., Bailey, S., Bauer, C. W., Bell, W., ...
This report provides a comprehensive overview of the prospects for B physics at the Tevatron. The work was carried out during a series of workshops starting in September 1999. There were four working...
The QCD/SM working group: summary report (2002)
Alekhin, S., Balazs, C., Ball, R., Binoth, T., Boos, E., Botje, M., ...
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop "Physics at TeV Colliders'', Les Houches, France, 21 May - 1 June...
The QCD/SM working group: summary report (2002)
Alekhin, S., Balazs, C., Ball, R., Binoth, T., Boos, E., Botje, M., ...
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop "Physics at TeV Colliders'', Les Houches, France, 21 May - 1 June...
The QCD/SM Working Group: Summary Report (2002)
Alekhin,S., Balazs,C., Ball,R., Binoth,T., Boos,E., Botje,M., ...
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop ``Physics at TeV Colliders'', Les Houches, France, 21 May - 1 June...
The QCD/SM Working Group: Summary Report (2002)
Alekhin, S., Balazs, C., Ball, R., Binoth, T., Boos, E., Botje, M., ...
This Report documents the results obtained by the Working Group on Quantum ChromoDynamics and the Standard Model for the Workshop ``Physics at TeV Colliders'', Les Houches, France, 21 May - 1 June...
Jet fragmentation in e^+e^- annihilation (2001)
Biebel, O., Nason, P., Webber, B. R.
A short review of theoretical and experimental results on fragmentation in e^+e^- annihilation is presented. Starting with an introduction of the concept of fragmentation functions in e^+e^-...
The $\pt$ spectrum of heavy quarks in photoproduction (2001)
Frixione, S., Cacciari, M., Nason, P.
We illustrate a formalism that allows to match the next-to-leading order cross section for the photoproduction of heavy quarks to the cross section obtained by resumming logarithms of $\pt/m$ to the...
The p_T Spectrum in Heavy-Flavour Photoproduction (2001)
Cacciari, M., Frixione, S., Nason, P.
We consider the transverse-momentum distribution of heavy flavours in photon-hadron collisions. We present a formalism in which large transverse-momentum logarithms are resummed to the...
The QCD / SM working group: Summary report (2001)
Giele, W, Glover, EWN, Hinchliffe, I, Huston, J, Laenen, E, Pilon, E, ...
Nason, P, Ridolfi, G, Schneider, O, Tartarelli, F, Vikas, P, Baines, J T M, ...
We review the prospects for bottom production physics at the LHC. Members of the working group who has contributed to this document are: J. Baines, S.P. Baranov, P. Bartalini, A. Bay, E. Bouhova, M....
Nason, P., Ridolfi, G., Vikas, P., Baines, J., Baranov, S. P., ...
We review the prospects for bottom production physics at the LHC.
Third General Meeting of the LEP2 Workshop (2000)
Boudjema, F, Knowles, I G, Melé, Barbara, Nason, P, Sjöstrand, Torbjörn
Standard process. QCD. Event generators for QCD.
A Phenomenological Study of Heavy-Quark Fragmentation Functions in e+e- Annihilation (1999)
We consider the computation of D and B fragmentation functions in e+e- annihilation. We compare the results of fitting present data using the next-to-leading-logarithmic resummed approach, versus the...
Sudakov Resummation Effects in Prompt-Photon Hadroproduction (1999)
Catani, S, Mangano, Michelangelo L, Nason, P, Oleari, C, Vogelsang, W
We compute the effects of soft-gluon resummation, at the next-to-leading-logarithmic level, in the fixed-target hadroproduction cross section for prompt photons. We find in general that the...
Sudakov Resummation Effects in Prompt-Photon Hadroproduction (1999)
Catani, S., Mangano, M. L., Nason, P., Oleari, C., Vogelsang, W.
We compute the effects of soft-gluon resummation, at the next-to-leading-logarithmic level, in the fixed-target hadroproduction cross section for prompt photons. We find in general that the...
A Note on W Production at HERA (1999)
Nason, P., Rueckl, R., Spira, M.
We discuss W boson production at HERA including NLO QCD corrections.
Wavelets in time series analysis (1999)
This article reviews the role of wavelets in statistical time series analysis. We survey work that emphasises scale such as estimation of variance and the scale exponent of a process with a speci c...
Heavy Flavour Production (1998)
I review recent developements in the theory of heavy flavour production. In particular, I dicuss the next-to-leading resummation of soft gluon effects in heavy flavour hadroproduction, and the...
Heavy Flavour Production (1998)
I review recent developements in the theory of heavy flavour production. In particular, I dicuss the next-to-leading resummation of soft gluon effects in heavy flavour hadroproduction, and the...
We use a recently completed O(alpha_s^2) fixed-order calculation of the heavy-flavour production cross section in e+e- collisions to compute the heavy-quark fragmentation function. We fit the result...
Frixione, Stefano, Nason, P, Ridolfi, G
We consider the resummation of soft-gluon emission in the transverse-momentum distribution of vector mesons in hadronic collisions. We find that the resummed expression in the impact-parameter...
Frixione, S., Nason, P., Ridolfi, G.
We consider the resummation of soft-gluon emission in the transverse-momentum distribution of vector mesons in hadronic collisions. We find that the resummed expression in the impact-parameter...
Sudakov Resummation for Prompt-Photon Production in Hadron Collisions (1998)
Catani, S, Mangano, Michelangelo L, Nason, P
We present the explicit expressions for the resummation of large-x Sudakov effects in the transverse-energy distribution of prompt-photons produced in hadronic collisions, to next-to-leading...
Sudakov Resummation for Prompt-Photon Production in Hadron Collisions (1998)
Catani, S., Mangano, M. L., Nason, P.
We present the explicit expressions for the resummation of large-x Sudakov effects in the transverse-energy distribution of prompt-photons produced in hadronic collisions, to next-to-leading...
The $p_{T}$ Spectrum in Heavy-Flavour Hadroproduction (1998)
Cacciari, M, Greco, Mario, Nason, P
We consider the transverse-momentum distribution of heavy flavours in hadronic collisions. We present a formalism in which large transverse-momentum logarithms are resummed at the next-to-leading...
The p_T Spectrum in Heavy-Flavour Hadroproduction (1998)
Cacciari, M., Greco, M., Nason, P.
We consider the transverse-momentum distribution of heavy flavours in hadronic collisions. We present a formalism in which large transverse-momentum logarithms are resummed at the next-to-leading...
NLL Resummation of the Heavy-Quark Hadroproduction Cross-Section (1998)
Bonciani, R, Catani, S, Mangano, Michelangelo L, Nason, P
We compute the effect of soft-gluon resummation, at the next-to-leading-logarithmic level, in the hadroproduction cross-section for heavy flavours. Applications to top, bottom and charm total...
NLL resummation of the heavy-quark hadroproduction cross-section (1998)
Bonciani, R., Catani, S., Mangano, M. L., Nason, P.
We compute the effect of soft-gluon resummation, at the next-to-leading-logarithmic level, in the hadroproduction cross-section for heavy flavours. Applications to top, bottom and charm total...
In this paper we describe the calculation of the process e+e- -> Z/gamma -> QQbar + X, where Q is a heavy quark, at order alpha_s^2.
On the Fragmentation Function for Heavy Quarks in $e^{+}e^{-}$ collisions (1997)
We use a recent O(alpha_s^2) calculation of the differential cross section for the production of heavy quarks in e+e- annihilation to compute a few moments of the heavy quark single-inclusive...
On the Fragmentation Function for Heavy Quarks in e+e- collisions (1997)
We use a recent O(alpha_s^2) calculation of the differential cross section for the production of heavy quarks in e+e- annihilation to compute a few moments of the heavy quark single-inclusive...
Next-to-Leading-Order Corrections to the Production of Heavy-Flavour Jets in e+e- Collisions (1997)
In this paper we describe the calculation of the process e+e- -> Z/gamma -> QQbar + X, where Q is a heavy quark, at order alpha_s^2.
Next-to-Leading-Order Corrections to Momentum Correlations in $Z^0 \to b\overline{b}$ (1997)
We recently completed a calculation of the process $e^+e^- \to Q\bar{Q}+X$, where Q is a heavy quark, at order $O(\alpha_s^2)$. As a first application of this calculation we compute the momentum...
Next-to-Leading-Order Corrections to Momentum Correlations in $Z^0 \to b\bar{b}$ (1997)
We recently completed a calculation of the process $e^+e^- \to Q\bar{Q}+X$, where Q is a heavy quark, at order $O(\alpha_s^2)$. As a first application of this calculation we compute the momentum...
Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
We review the present theoretical and experimental status of heavy quark production in high-energy collisions. In particular, we cover hadro- and photoproduction at fixed target experiments, at HERA...
Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
We review the present theoretical and experimental status of heavy quark production in high-energy collisions. In particular, we cover hadro- and photoproduction at fixed target experiments, at HERA...
Non-Perturbative Corrections to Heavy Quark Fragmentation in $e^+e^-$ Annihilation (1996)
We estimate the non-perturbative power-suppressed corrections to heavy flavour fragmentation and correlation functions in e^+e^- annihilation, using a model based on the analysis of one-loop Feynman...
Non-Perturbative Corrections to Heavy Quark Fragmentation in e^+e^- Annihilation (1996)
We estimate the non-perturbative power-suppressed corrections to heavy flavour fragmentation and correlation functions in e^+e^- annihilation, using a model based on the analysis of one-loop Feynman...
Soft Gluon Resummation in Heavy Flavour Production (1996)
I discuss the effect of resummation of soft gluons in hadronic production of high mass systems, and in particular in heavy flavour production. I show that in widely used $x$-space resummation...
Soft Gluon Resummation in Heavy Flavour Production (1996)
I discuss the effect of resummation of soft gluons in hadronic production of high mass systems, and in particular in heavy flavour production. I show that in widely used $x$-space resummation...
Momentum correlations in $Z^0\to b\overline{b}$ and the measurement of $R^0_b$ (1996)
We study the correlations of $b\bar b$ pairs produced in inclusive $Z^0$ decays, and their possible influence upon the determination of $R_b$.
Momentum correlations in $Z^0\to b\bar b$ and the measurement of $R^0_b$ (1996)
We study the correlations of $b\bar b$ pairs produced in inclusive $Z^0$ decays, and their possible influence upon the determination of $R_b$.
The resummation of soft gluon in hadronic collisions (1996)
Catani, S, Mangano, Michelangelo L, Nason, P, Trentadue, L G
We compute the effects of soft gluon resummation for the production of high mass systems in hadronic collisions. We carefully analyse the growth of the perturbative expansion coefficients of the...
The Resummation of Soft Gluon in Hadronic Collisions (1996)
Catani, S., Mangano, M. L., Nason, P., Trentadue, L.
We compute the effects of soft gluon resummation for the production of high mass systems in hadronic collisions. We carefully analyse the growth of the perturbative expansion coefficients of the...
QCD in e+e- collisions at 2 TeV (1996)
Bethke, Siegfried, Mangano, Michelangelo L, Nason, P
We discuss some topics in QCD studies at 2 TeV. Particular emphasis is given to the separation of pure QCD events from the WW and the t-tbar backgrounds
QCD in e+e- collisions at 2 TeV (1996)
Bethke, S., Mangano, M. L., Nason, P.
We discuss some topics in QCD studies at 2 TeV. Particular emphasis is given to the separation of pure QCD events from the WW and the t-tbar backgrounds
Nason, P, Khoze, V A, Dokshitzer, Yu L, Hautmann, F, Seymour, Michael H, Padilla, C, ...
We discuss QCD studies that will be possible at LEP2. We examine both experimental and theoretical aspects of jets, fragmentation functions, multiplicities and particle spectra.
Nason, P., Webber, B. R., Ward, D., Lanske, D., Del Pozo, L. A., Fabbri, F., ...
We discuss QCD studies that will be possible at LEP2. We examine both experimental and theoretical aspects of jets, fragmentation functions, multiplicities and particle spectra.
Nason, P, Webber, Bryan R, Ward, D, Lanske, D, Del Pozo, L A, Fabbri, Franco Luigi, ...
We discuss QCD studies that will be possible at LEP2. We examine both experimental and theoretical aspects of jets, fragmentation functions, multiplicities and particle spectra.
The top cross section in hadronic collisions (1996)
Catani, S, Mangano, Michelangelo L, Nason, P, Trentadue, L G
We reexamine the top quark production cross section at the Tevatron and LHC, in the light of recent progress on the resummation of logarithmic soft gluon corrections. We find that resummation effects...
The Top Cross Section in Hadronic Collisions (1996)
Catani, S., Mangano, M. L., Nason, P., Trentadue, L.
We reexamine the top quark production cross section at the Tevatron and LHC, in the light of recent progress on the resummation of logarithmic soft gluon corrections. We find that resummation effects...
Heavy Flavour Production (1995)
Nason, P, Ridolfi, G, Frixione, Stefano
We review the status of heavy flavour production in QCD. Comparison of experimental and theoretical results for top and bottom production are given. Selected topics in charm production are also...
Heavy Flavour Production (1995)
Nason, P., Ridolfi, G., Frixione, S.
We review the status of heavy flavour production in QCD. Comparison of experimental and theoretical results for top and bottom production are given. Selected topics in charm production are also...
Infrared renormalons and power suppressed effects in e+e- jet events (1995)
We study the effect of infrared renormalons upon shape variables that are commonly used to determine the strong coupling constant in e^+e^- annihilation into hadronic jets. We consider the model of...
Infrared Renormalons and Power Suppressed Effects in $e^+e^-$ Jet Events (1995)
We study the effect of infrared renormalons upon shape variables that are commonly used to determine the strong coupling constant in $e^+e^-$ annihilation into hadronic jets. We consider the model of...
Differential distributions for heavy flavour production at HERA (1995)
Frixione, Stefano, Nason, P, Ridolfi, G C
We compute pseudorapidity and transverse momentum distributions for charm and bottom production at HERA. We examine the effect of next-to-leading order QCD corrections, the effect of possible...
Differential Distributions for Heavy Flavour Production at HERA (1995)
Frixione, S., Nason, P., Ridolfi, G.
We compute pseudorapidity and transverse momentum distributions for charm and bottom production at HERA. We examine the effect of next-to-leading order QCD corrections, the effect of possible...
Top quark distributions in hadronic collisions (1995)
Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
We present kinematical distributions for top quark pairs produced at the Tevatron \ppbar\ Collider, as predicted within Next-to-Leading-Order QCD. We consider single and double-inclusive...
Top Quark Distributions in Hadronic Collisions (1995)
Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
We present kinematical distributions for top quark pairs produced at the Tevatron \ppbar\ Collider, as predicted within Next-to-Leading-Order QCD. We consider single and double-inclusive...
Altarelli, Guido, Nason, P, Ridolfi, G
The divergent large-order behaviour of the perturbative series relevant for the determination of \as from \tau decay is controlled by the leading ultraviolet (UV) renormalon. Even in the absence of...
A Study of Ultraviolet Renormalon Ambiguities in the Determination of $\as$ from $\tau$ Decay (1995)
Altarelli, G., Nason, P., Ridolfi, G.
The divergent large-order behaviour of the perturbative series relevant for the determination of $\as$ from $\tau$ decay is controlled by the leading ultraviolet (UV) renormalon. Even in the absence...
Total cross sections for heavy flavour production at HERA (1995)
Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
We compute total cross sections for charm and bottom photoproduction at HERA energies, and discuss the relevant theoretical uncertainties. In particular we discuss the problems arising from the...
Total Cross Sections for Heavy Flavour Production at HERA (1994)
Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
We compute total cross sections for charm and bottom photoproduction at HERA energies, and discuss the relevant theoretical uncertainties. In particular we discuss the problems arising from the...
Direct instanton effects in current-current correlators (1994)
We compute the effect of small-size instantons on the coefficient function of the chiral condensate in the operator product expansion of current-current correlators. Furthermore, we also compute the...
Charm and bottom production: theoretical results versus experimental data (1994)
Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
Testing QCD in charm production (1994)
Ridolfi, G, Frixione, Stefano, Mangano, Michelangelo L, Nason, P
Fragmentation function method for charge asymmetry measurements in e+e- collisions (1994)
We propose a method for measuring the hadron charge asymmetry in \ee collisions which is based upon the fragmentation function formalism, and is largely independent of modelling of fragmentation...
Fragmentation Function Method for Charge Asymmetry Measurements in $\e^+e^-$ Collisions (1994)
We propose a method for measuring the hadron charge asymmetry in $\ee$ collisions which is based upon the fragmentation function formalism, and is largely independent of modelling of fragmentation...
Heavy flavour production in perturbative QCD (1994)
Nason, P, Frixione, Stefano, Mangano, Michelangelo L, Ridolfi, G
On the Q^2 Dependence of Measured Polarized Structure Funtions (1993)
Altarelli, G., Nason, P., Ridolfi, G.
We analyse the available data on the polarized asymmetries $A_1$ for proton, neutron and deuteron targets. We use a homogeneous and updated set of unpolarized structure functions to derive $g_1$ from...
Improving the Weizs\"acker-Williams Approximation in Electron-Proton Collisions (1993)
Frixione, S., Mangano, M. L., Nason, P., Ridolfi, G.
We critically examine the validity of the Weizs\"acker-Williams approximation in electron-hadron collisions. We show that in its commonly used form it can lead to large errors, and we show how to...
Improving the Weizsäcker-Williams approximation in electron-proton collisions (1993)
Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
We critically examine the validity of the Weizs\"acker-Williams approximation in electron-hadron collisions. We show that in its commonly used form it can lead to large errors, and we show how to...
Heavy Quark Correlations in Photon-Hadron Collisions (1993)
Frixione, S., Mangano, M., Nason, P., Ridolfi, G.
We describe a next-to-leading-order calculation of the fully exclusive parton cross section for the photoproduction of heavy quarks. We use our result to compute quantities of interest for current...
Heavy-quark correlations in photon-hadron collisions (1993)
Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
On the determination of the gluon density of the proton from heavy-flavour production at HERA (1993)
Frixione, Stefano, Mangano, Michelangelo L, Nason, P, Ridolfi, G
Small-Size Instanton Corrections to the $\tau$ Hadronic Width (1993)
We compute the effect of small-size instanton corrections to current-current correlators, for all combinations of axial, vector, and possibly flavour non-diagonal currents. We apply our result to the...
Report of the b fragmentation working group (1992)
Ball, A H, Bowdery, C K, Charlton, David G, Clarke, P E L, Close, F E, Dauncey, P D, ...
Parton luminosities, W and Z cross sections and gauge boson pair production (1991)
Kuijf, H, Martinelli, G, Matsuura, T, Mele, T, Nason, P, Pastore, F, ...
Jet fragmentation in e^+e^- annihilation
Biebel,O., Nason,P., Webber,B. R.
A short review of theoretical and experimental results on fragmentation in e^+e^- annihilation is presented. Starting with an introduction of the concept of fragmentation functions in e^+e^-...
Jet fragmentation in e^+e^- annihilation
Biebel, O., Nason, P., Webber, B. R.
A short review of theoretical and experimental results on fragmentation in e^+e^- annihilation is presented. Starting with an introduction of the concept of fragmentation functions in e^+e^-...