scispace - formally typeset
Open AccessJournal ArticleDOI

Measurement of the Isolated Prompt Photon Production Cross Section in $pp$ Collisions at $\sqrt{s} = 7$~TeV

Vardan Khachatryan, +2173 more
- 23 Feb 2011 - 
- Vol. 106, Iss: 8, pp 082001-082001
Reads0
Chats0
TLDR
The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy E(T)(γ) in pp collisions at √s=7  TeV using data recorded by the CMS detector at the LHC to be in agreement with next-to-leading-order perturbative QCD calculations.
Abstract
The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy E_T-gamma in pp collisions at sqrt(s)=7 TeV using data recorded by the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2.9 inverse picobarns. Photons are required to have a pseudorapidity |eta_gamma| 21 GeV, covering the kinematic region 0.006 < x_T < 0.086. The measured cross section is found to be in agreement with next-to-leading-order perturbative QCD calculations.

read more

Citations
More filters
Journal ArticleDOI

Measurement of the inclusive W and Z production cross sections in pp collisions at √s = 7 TeV with the CMS experiment

S. Chatrchyan, +2250 more
TL;DR: In this paper, a measurement of W and Z production cross sections in pp collisions at 7 TeV is presented, where electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 inverse picobarns.
Journal ArticleDOI

Studies of jet quenching using isolated-photon+jet correlations in PbPb and pp collisions at sNN=2.76TeV

S. Chatrchyan, +2177 more
- 08 Jan 2013 - 
TL;DR: In this article, the first study of isolated photon + jet correlations in relativistic heavy ion collisions is reported using data from PbPb collisions at a centre-of-mass energy of 2.76 TeV2.
Journal ArticleDOI

Measurement of isolated photon production in pp and PbPb collisions at sNN=2.76 TeV

S. Chatrchyan, +2242 more
- 04 Apr 2012 - 
TL;DR: In this article, isolated photon production is measured in proton-proton and lead-lead collisions at nucleon-nucleon centre-of-mass energies of 2.76 TeV in the pseudorapidity range |eta|<1.44 and transverse energies ET between 20 and 80 GeV with the CMS detector at the LHC.
Journal ArticleDOI

Quantitative constraints on the gluon distribution function in the proton from collider isolated-photon data

TL;DR: In this paper, the impact of isolated-photon data from proton-(anti)proton collisions at RHIC, SppS, Tevatron and LHC energies, on the parton distribution functions of the proton is studied using a recently developed Bayesian reweighting method.
Journal ArticleDOI

Measurement of the inclusive isolated prompt photon cross-section in pp collisions at √s=7 TeV using 35 pb-1 of ATLAS data

Georges Aad, +3018 more
- 06 Dec 2011 - 
TL;DR: A measurement of the differential cross-section for the inclusive production of isolated prompt photons in pp collisions at a center-of-mass energy root s = 7 TeV is presented in this article.
References
More filters
Journal ArticleDOI

The CMS experiment at the CERN LHC

S. Chatrchyan, +3175 more
TL;DR: The Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) at CERN as mentioned in this paper was designed to study proton-proton (and lead-lead) collisions at a centre-of-mass energy of 14 TeV (5.5 TeV nucleon-nucleon) and at luminosities up to 10(34)cm(-2)s(-1)
Journal ArticleDOI

New generation of parton distributions with uncertainties from global QCD analysis

TL;DR: In this paper, a new generation of parton distribution functions with increased precision and quantitative estimates of uncertainties is presented, using a recently developed eigenvector-basis approach to the hessian method, which provides the means to quickly estimate the uncertainties of a wide range of physical processes at these high-energy hadron colliders, based on current knowledge of the parton distributions.
Journal ArticleDOI

MINUIT-a system for function minimization and analysis of the parameter errors and correlations

TL;DR: Title of program: MINUIT gating the shape of the function near the minimum to determine the errors, in this essentially statistical problem the Catalogue number: ACWH function involved is usually a chisquare or negative log-likeli
Journal ArticleDOI

New parton distributions for collider physics

TL;DR: In this article, the authors extract new parton distribution functions (PDFs) of the proton by global analysis of hard scattering data in the general-mass framework of perturbative quantum chromodynamics.
Journal ArticleDOI

PYTHIA 6.4 Physics and Manual

TL;DR: The PYTHIA program as discussed by the authors can be used to generate high-energy-physics ''events'' (i.e. sets of outgoing particles produced in the interactions between two incoming particles).
Related Papers (5)

Geant4—a simulation toolkit

S. Agostinelli, +126 more