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Title: Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s=7TeV

Journal Article · · The European Physical Journal. C, Particles and Fields
 [1]
  1. Yerevan Physics Inst. (YerPhI) (Armenia). et al.

A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at √s=7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0fb-1 collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25GeV respectively, in the pseudorapidity range |η|<2.5, |η|ϵ[1.44,1.57] and with an angular separation ΔR>0.45, is 17.2±0.2(stat)±1.9(syst)±0.4(lumi) \,pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins–Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1234833
Report Number(s):
FERMILAB-PUB-14-165-CMS; CERN-PH-EP-2014-067; CMS-SMP-13-001; arXiv eprint number arXiv:1405.7225
Journal Information:
The European Physical Journal. C, Particles and Fields, Vol. 74, Issue 11; ISSN 1434-6052
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

References (41)

Isolated photons in perturbative QCD journal June 1998
Large Mass Hierarchy from a Small Extra Dimension journal October 1999
MadGraph 5: going beyond journal June 2011
General neutralino NLSPs at the early LHC journal August 2012
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC journal September 2012
PYTHIA 6.4 physics and manual journal May 2006
Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC journal September 2012
Calculation of prompt diphoton production cross sections at Fermilab Tevatron and CERN LHC energies journal July 2007
A full next-to-leading order study of direct photon pair production in hadronic collisions journal August 2000
The hierarchy problem and new dimensions at a millimeter journal June 1998
Event generation with SHERPA 1.1 journal February 2009
Isolating a light Higgs boson from the diphoton background at the CERN LHC journal October 2002
Measurement of the Cross Section for Prompt Isolated Diphoton Production Using the Full CDF Run II Data Sample journal March 2013
The CMS experiment at the CERN LHC journal August 2008
Measurement of the inclusive W and Z production cross sections in pp collisions at $ \sqrt {s} = 7 $ TeV with the CMS experiment journal October 2011
Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s= 7 TeV journal September 2013
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New Generation of Parton Distributions with Uncertainties from Global QCD Analysis journal July 2002
Measurement of the underlying event activity at the LHC with $ \sqrt {s} = 7 $ TeV and comparison with $ \sqrt {s} = 0.9 $ TeV journal September 2011
New parton distributions for collider physics journal October 2010
Photon pair production with soft gluon resummation in hadronic interactions journal June 1998
Parton distributions for the LHC journal July 2009
Observation of a new boson with mass near 125 GeV in pp collisions at $ \sqrt{s}=7 $ and 8 TeV journal June 2013
An Alternative to Compactification journal December 1999
Measurement of the production cross section for pairs of isolated photons in pp collisions at $ \sqrt {s} = 7\;TeV $ journal January 2012
Diphoton Production at Hadron Colliders: A Fully Differential QCD Calculation at Next-to-Next-to-Leading Order journal February 2012
Pileup subtraction using jet areas journal January 2008
Geant4—a simulation toolkit
  • Agostinelli, S.; Allison, J.; Amako, K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3 https://doi.org/10.1016/S0168-9002(03)01368-8
journal July 2003
Angular distribution of dileptons in high-energy hadron collisions journal October 1977
Measurement of isolated-photon pair production in pp collisions at $ \sqrt{s}=7\;TeV $ with the ATLAS detector journal January 2013
Measurement of the Isolated Prompt Photon Production Cross Section in p p Collisions at s = 7 TeV journal February 2011
A multidimensional unfolding method based on Bayes' theorem journal August 1995
PHYSTAT 2011 Workshop on Statistical Issues Related to Discovery Claims in Search Experiments and Unfolding null January 2011
Measurement of the underlying event activity at the LHC with $\sqrt{s}\ =$ 7 TeV and comparison with $\sqrt{s}\ =$ 0.9 TeV text January 2011
Observation of a new Boson at a mass of 125 gev with the cms Experiment at the lhc conference March 2015
Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeV text January 2013
Diphoton production at Hadron Colliders: A fully differential QCD calculation at next-to-next-to-leading order text January 2012
Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC text January 2018
Parton distributions for the LHC text January 2007
Event generation with SHERPA 1.1 text January 2009
Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeV text January 2013

Cited By (7)

A detailed study of the LHC and TEVATRON hadron–hadron prompt-photon pair production experiments in the angular ordering constraint k t -factorization approaches journal August 2019
Production of γγ+2 jets from double parton scattering in proton-proton collisions at the LHC journal December 2015
Top-quark effects in diphoton production through gluon fusion at next-to-leading order in QCD journal October 2019
Measurements of integrated and differential cross sections for isolated photon pair production in p p collisions at s = 8 TeV with the ATLAS detector journal June 2017
Predictions for the Isolated Diphoton Production through NNLO in QCD and Comparison to the 8 TeV ATLAS Data journal August 2018
New axion searches at flavor factories text January 2019
Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s = 8 TeV text January 2015


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