Publications (44)
How sensitive are high-pt electron spectra at RHIC to heavy quark energy loss?
N. Armesto, M. Cacciari, A. Dainese +2
In nucleus-nucleus collisions, high-pt electron spectra depend on the medium modified fragmentation of their massive quark parents, thus giving novel access to the predicted mass h…
Soft-Gluon Resummation for the Fragmentation of Light and Heavy Quarks at Large x
M. Cacciari, S. Catani
We present a QCD study of fragmentation processes for light and heavy quarks in the semi-inclusive region of large x. Large logarithmic terms, due to soft-gluon radiation, are eval…
Is There a Significant Excess in Bottom Hadroproduction at the Tevatron?
M. Cacciari, P. Nason
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 observe…
Large- Heavy-Quark Production in Two-Photon Collisions
M. Cacciari, M. Greco, B. A. Kniehl +3
The next-to-leading-order (NLO) cross section for the production of heavy quarks at large transverse momenta () in collisions is calculated with perturbative fragme…
Heavy-quark energy loss at RHIC and LHC
A. Dainese, N. Armesto, M. Cacciari +2
The attenuation of heavy-flavored particles in nucleus-nucleus collisions tests the microscopic dynamics of medium-induced parton energy loss and, in particular, its expected depen…
The p_T Spectrum in Heavy-Flavour Photoproduction
M. Cacciari, S. Frixione, P. Nason
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 QCD/SM Working Group: Summary Report
S. Alekhin, C. Balazs, R. Ball +57
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,…
The t-tbar cross-section at 1.8 and 1.96 TeV: a study of the systematics due to parton densities and scale dependence
M. Cacciari, S. Frixione, M. L. Mangano +2
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…
Gamma-Gamma Physics at LEP2
P. Aurenche, G. A. Schuler, A. Bawa +41
This report is an overview of the gamma-gamma physics capabilities of LEP2, and covers the following topics: structure functions, equivalent photon approximation, tagging condition…
Physics at Large Rapidities in $γ^*γ^* \to$ Hadrons at LEP2
M. Cacciari, V. Del Duca, S. Frixione +1
We compute the order-$\as$ corrections to the total cross section and to jet rates in $γ^* γ^* \to$ hadrons for the process $\epem\to\epem +$ hadrons. We use a NLO order general-…
Proceedings of the First International Workshop on Multiple Partonic Interactions at the LHC (MPI08)
R. Bernhard, R. Field, R. Chierici +51
The objective of this first workshop on Multiple Partonic Interactions (MPI) at the LHC is to raise the profile of MPI studies, summarizing the legacy from the older phenomenology…
Heavy Quarks Photoproduction
M. Cacciari
The state of the art of the theoretical calculations for heavy quarks photoproduction is reviewed. The full next-to-leading order calculation and two possible resummations, the hig…
The partonic structure of the electron at the next-to-leading logarithmic accuracy in QED
V. Bertone, M. Cacciari, S. Frixione +1
By working in QED, we obtain the electron, positron, and photon Parton Distribution Functions (PDFs) of the unpolarised electron at the next-to-leading logarithmic accuracy. The PD…
Physics at the CLIC Multi-TeV Linear Collider
CLIC Physics Working Group, E. Accomando, A. Aranda +81
This report summarizes a study of the physics potential of the CLIC e+e- linear collider operating at centre-of-mass energies from 1 TeV to 5 TeV with luminosity of the order of 10…
Bottom Production
P. Nason, G. Ridolfi, O. Schneider G. F. Tartarelli +56
We review the prospects for bottom production physics at the LHC.
QCD radiative corrections to $γ^*γ^* \to$ hadrons at LEP2
M. Cacciari, V. Del Duca, S. Frixione +1
In this talk we describe the order-$\as$ corrections to the total cross section and to jet rates in $γ^* γ^* \to$ hadrons for the process $\epem\to\epem +$ hadrons. We use a next…
Event Generators for Bhabha Scattering
S. Jadach, O. Nicrosini, H. Anlauf +21
The results obtained by the "Event Generators for Bhabha Scattering" working group during the CERN Workshop "Physics at LEP2" (1994/1995) are presented.
Vector boson scattering: Recent experimental and theory developments
C. F. Anders, A. Ballestrero, J. Balz +111
This document summarises the talks and discussions happened during the VBSCan Split17 workshop, the first general meeting of the VBSCan COST Action network. This collaboration is a…
Boosted objects and jet substructure at the LHC
BOOST2012 participants- A. Altheimer, A. Arce, L. Asquith +84
This report of the BOOST2012 workshop presents the results of four working groups that studied key aspects of jet substructure. We discuss the potential of the description of jet s…
Heavy Quarks: Summary Report
J. Baines, S. P. Baranov, O. Behnke +38
The present status of the heavy-quark production theory is critically reviewed in the first contribution. The second contribution summarises the present heavy flavour data from HER…
Report of the QCD Working Group
A. Ballestrero, P. Bambade, S. Bravo +17
The activities of the QCD working group concentrated on improving the understanding and Monte Carlo simulation of multi-jet final states due to hard QCD processes at LEP, i.e. quar…
Proton-Nucleus Collisions at the LHC: Scientific Opportunities and Requirements
C. A. Salgado, J. Alvarez-Muniz, F. Arleo +27
Proton-nucleus (p+A) collisions have long been recognized as a crucial component of the physics programme with nuclear beams at high energies, in particular for their reference rol…
The present theoretical error on the Bhabha scattering cross section in the luminometry region at LEP
A. Arbuzov, M. Bigi, H. Burkhardt +19
The results concerning the theoretical evaluation of the small-angle Bhabha Scattering cross section obtained during the Workshop on Physics at LEP2 (CERN, Geneva, Switzerland, 199…
Parton fragmentation in the vacuum and in the medium
S. Albino, F. Anulli, F. Arleo +38
We present the mini-proceedings of the workshop on ``Parton fragmentation in the vacuum and in the medium'' held at the European Centre for Theoretical Studies in Nuclear Physics a…
HERA and the LHC - A workshop on the implications of HERA for LHC physics: Proceedings - Part A
S. Alekhin, G. Altarelli, N. Amapane +191
The HERA electron--proton collider has collected 100 pb of data since its start-up in 1992, and recently moved into a high-luminosity operation mode, with upgraded detectors…
Large $\pt$ Hadroproduction of Heavy Quarks
M. Cacciari, M. Greco
The production of heavy quarks at large $\pt$ ($\pt\gg m$) in hadronic collisions is considered. The analysis is carried out in the framework of perturbative fragmentation function…
HERA and the LHC - A workshop on the implications of HERA for LHC physics: Proceedings - Part B
S. Alekhin, G. Altarelli, N. Amapane +191
The HERA electron--proton collider has collected 100 pb of data since its start-up in 1992, and recently moved into a high-luminosity operation mode, with upgraded detectors…
Physics at a 100 TeV pp collider: Standard Model processes
M. L. Mangano, G. Zanderighi, J. A. Aguilar Saavedra +73
This report summarises the properties of Standard Model processes at the 100 TeV pp collider. We document the production rates and typical distributions for a number of benchmark S…
QCD analysis of first b cross section data at 1.96 TeV
M. Cacciari, S. Frixione, M. L. Mangano +2
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 ne…
Charmonium Production at the Tevatron
M. Cacciari, M. Greco, M. L. Mangano +1
We present in this work a study of large-\pt\ charmonium production in hadronic collisions. We work in the framework of the factorization model of Bodwin Braaten and Lepage, thereb…
The p_T Spectrum in Heavy-Flavour Hadroproduction
M. Cacciari, M. Greco, P. Nason
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…
The SM and NLO Multileg and SM MC Working Groups: Summary Report
J. Alcaraz Maestre, S. Alioli, J. R. Andersen +79
The 2011 Les Houches workshop was the first to confront LHC data. In the two years since the previous workshop there have been significant advances in both soft and hard QCD, parti…
Proceedings of the workshop: HERA and the LHC workshop series on the implications of HERA for LHC physics
H. Jung, A. De Roeck, Z. J. Ajaltouni +265
2nd workshop on the implications of HERA for LHC physics. Working groups: Parton Density Functions Multi-jet final states and energy flows Heavy quarks (charm and beauty) Diffracti…
NLO Production and Decay of Quarkonium
A. Petrelli, M. Cacciari, M. Greco +2
We present a calculation of next-to-leading-order (NLO) QCD corrections to total hadronic production cross sections and to light-hadron-decay rates of heavy quarkonium states. Both…
Heavy-to-light ratios as a test of medium-induced energy loss at RHIC and the LHC
N. Armesto, M. Cacciari, A. Dainese +2
The ratio of nuclear modification factors of high- heavy-flavored mesons tolight-flavored hadrons (heavy-to-light ratio) is shown to be a sensitive tool to test medium-induced…
Charmed Mesons Fragmentation Functions
M. Cacciari, M. Greco, S. Rolli +1
Fragmentation functions for heavy-light mesons, like the charmed D, D^* mesons, are proposed. They rest on next-to-leading QCD Perturbative Fragmentation Functions for heavy quarks…
SABSPV - A Monte Carlo Integrator for Small-Angle Bhabha Scattering
M. Cacciari, G. Montagna, O. Nicrosini +1
SABSPV is a code designed to perform a theoretical evaluation of small-angle Bhabha scattering cross sections by suitably matching fixed-order perturbative calculations and structu…
Progress and Problems in QCD - Report from the Hadronic Final States Working Group at DIS99
M. Cacciari, F. Chlebana, L. Sinclair +1
We present a summary of the Hadronic Final States parallel sessions of the DIS99 Workshop. Topics were presented over two days and included both theoretical and experimental talks.…
Standard Model Handles and Candles Working Group: Tools and Jets Summary Report
C. Buttar, J. D'Hondt, M. Kramer +54
This report summarizes the activity on comparisons of existings tools for the standard model and on issues in jet physics by the SMHC working group during and subsequent to the Wor…
The $\pt$ spectrum of heavy quarks in photoproduction
S. Frixione, M. Cacciari, P. Nason
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…
Improving methods and predictions at high-energy colliders within collinear factorisation
V. Bertone, M. Cacciari, S. Frixione +3
We illustrate how electron Parton Distribution Functions (PDFs) with next-to-leading collinear logarithmic accuracy must be employed in the context of perturbative predictions for…
Heavy Ion Collisions at the LHC - Last Call for Predictions
S. Abreu, S. V. Akkelin, J. Alam +164
This writeup is a compilation of the predictions for the forthcoming Heavy Ion Program at the Large Hadron Collider, as presented at the CERN Theory Institute 'Heavy Ion Collisions…
QCD radiative corrections to $γ^*γ^* \to$ hadrons
M. Cacciari, V. Del Duca, S. Frixione +1
We compute the order-$\as$ corrections to the total cross section and to jet rates for the process $\epem\to\epem +$ hadrons, where the hadrons are produced through crossed-channel…
J/psi Production via Fragmentation at the Tevatron
M. Cacciari, M. Greco
The production of $\jpsi$ at large transverse momenta ($\pt > M_\jpsi$) in collisions is considered by including the mechanism of fragmentation. Both contributions of fra…