Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s=7 TeV with the ATLAS detector

Aad, G.; Abbott, B.; Abdallah, J.; Abdelalim, A. A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; Abramowicz, H.; Abreu, H.; Acerbi, E.; Acharya, B. S.; Adams, D. L.; Addy, T. N.; Adelman, J.; Aderholz, M.; Adomeit, S.; Adragna, P.; Adye, T.; Aefsky, S.; Aguilar-Saavedra, J A.; Siegrist, James L.

doi:10.1103/PhysRevD.83.052005

Title: Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s=7 TeV with the ATLAS detector

Journal Article · Fri Mar 18 00:00:00 EDT 2011 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.83.052005· OSTI ID:1100069

Aad, G. ^[1]; Abbott, B. ^[2]; Abdallah, J. ^[3]; Abdelalim, A. A. ^[4]; Abdesselam, A. ^[5]; Abdinov, O. ^[6]; Abi, B. ^[7]; Abolins, M. ^[8]; Abramowicz, H. ^[9]; Abreu, H. ^[10]; Acerbi, E. ^[11]; Acharya, B. S. ^[12]; Adams, D. L. ^[13]; Addy, T. N. ^[14]; Adelman, J. ^[15]; Aderholz, M. ^[16]; Adomeit, S. ^[17]; Adragna, P. ^[18]; Adye, T. ^[19]; Aefsky, S. ^[20] more »

Albert-Ludwigs-Universitat, Freiburg (Germany). Fakultat fur Mathematik und Physik
Univ. of Oklahoma, Norman, OK (United States). Homer L. Dodge Dept. of Physics and Astronomy
Universitat Autonoma de Barcelona and ICREA, Barcelona (Spain). Institut de Fisica d' Altes Energies
Universite de Geneve, Geneva (Switzerland). Section de Physique
Oxford Univ., Oxford (United Kingdom). Dept. of Physics
Academy of Sciences, Baku (Azerbaijan). Institute of Physics
Oklahoma State Univ., Stillwater, OK (United States). Dept. of Physics
Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
Tel Aviv Univ., Tel Aviv (Israel). Raymond and Beverly Sackler School of Physics and Astronomy
Univ. Paris-Sud, Orsay (France). LAL
Universita di Milano, Milano (Italy). Dipartimento di Fisica; INFN Sezione di Milano, Milano (Italy)
Collegato di Udine (Italy). INFN Gruppo; ICTP, Trieste (Italy)
Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Dept.
Hampton Univ., Hampton, VA (United States); Dept. of Physics
Yale Univ., New Haven, CT (United States). Dept. of Physics
Werner-Heisenberg-Institut, Muchen (Germany). Max-Planck-Institut fur Physik
Ludwig Maximilian Univ., Munich (Germany). Fakultat fur Physik
Queen Mary Univ. of London, London (United Kingdom). Dept. of Physics
Rutherford Appleton Laboratory, Didcot (United Kingdom). Particle Physics Dept.
Brandeis Univ., Waltham, MA (United States). Dept. of Physics
Universidad de Granada, Granada (Spain). Departamento de Fisica Teorica y del Cosmos and CAFPE
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

A measurement of the cross section for the inclusive production of isolated prompt photons in pp collisions at a centre-of-mass energy √s = 7TeV is presented. The measurement covers the pseudorapidity ranges |η^γ| < 1.37 and 1.52 < |η^γ| < 1.81 in the transverse energy range 15 ≤ E_T^γ < 100 GeV. The results are based on an integrated luminosity of 880 nb^-1, collected with the ATLAS detector at the Large Hadron Collider. Photon candidates are identified by combining information from the calorimeters and from the inner tracker. Residual background in the selected sample is estimated from data based on the observed distribution of the transverse isolation energy in a narrow cone around the photon candidate. Results are compared to predictions from next-to-leading order perturbative QCD calculations.

View Journal Article

Cite

Export

Save

Research Organization:: Univ. of Pennsylvania, Philadelphia, PA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: ATLAS Collaboration

Grant/Contract Number:: FG02-95ER40893

OSTI ID:: 1100069

Alternate ID(s):: OSTI ID: 1196765

Journal Information:: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Vol. 83 Journal Issue: 5; ISSN 1550-7998

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 127 works

Citation information provided by
Web of Science

References (42)

Measurement of isolated photon production in deep-inelastic scattering at HERA Aaron, F. D.; Aktas, A.; Alexa, C. The European Physical Journal C, Vol. 54, Issue 3 https://doi.org/10.1140/epjc/s10052-008-0541-6	journal	February 2008
Prompt photon production at large pT scheme invariant QCD predictions and comparison with experiment Aurenche, P.; Baier, R.; Fontannaz, M. Nuclear Physics B, Vol. 297, Issue 4 https://doi.org/10.1016/0550-3213(88)90553-6	journal	February 1988
Measurement of the isolated photon cross section in <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> collisions at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math> Abazov, V. M.; Abbott, B.; Abolins, M. Physics Letters B, Vol. 639, Issue 3-4 https://doi.org/10.1016/j.physletb.2006.04.048	journal	August 2006
New Generation of Parton Distributions with Uncertainties from Global QCD Analysis Pumplin, Jonathan; Stump, Daniel Robert; Huston, Joey Journal of High Energy Physics, Vol. 2002, Issue 07 https://doi.org/10.1088/1126-6708/2002/07/012	journal	July 2002
Large Mass Hierarchy from a Small Extra Dimension Randall, Lisa; Sundrum, Raman Physical Review Letters, Vol. 83, Issue 17 https://doi.org/10.1103/PhysRevLett.83.3370	journal	October 1999
Multiparton interactions in photoproduction at HERA Butterworth, J. M.; Forshaw, J. R.; Seymour, M. H. Zeitschrift für Physik C: Particles and Fields, Vol. 72, Issue 4 https://doi.org/10.1007/s002880050286	journal	December 1996
Search for direct single-photon production at large pT in photon-proton collisions at √s = 62.4 GeV Angelis, A. L. S.; Besch, H. -J.; Blumenfeld, B. J. Physics Letters B, Vol. 94, Issue 1 https://doi.org/10.1016/0370-2693(80)90836-9	journal	July 1980
Direct photon production at the CERN ISR Angelis, A. L. S.; Basini, G.; Besch, H. -J. Nuclear Physics B, Vol. 327, Issue 3 https://doi.org/10.1016/0550-3213(89)90305-2	journal	December 1989
The catchment area of jets Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory Journal of High Energy Physics, Vol. 2008, Issue 04 https://doi.org/10.1088/1126-6708/2008/04/005	journal	April 2008
Measurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at $ \sqrt {s} = 7\;{\text{TeV}} $ with the ATLAS detector Aad, G.; Abbott, B.; Abdallah, J. Journal of High Energy Physics, Vol. 2010, Issue 12 https://doi.org/10.1007/JHEP12(2010)060	journal	December 2010
High-p T direct photon production inpp collisions Anassontzis, E.; Karabarbounis, A.; Kourkoumelis, C. Zeitschrift für Physik C Particles and Fields, Vol. 13, Issue 4 https://doi.org/10.1007/BF01572345	journal	December 1982
Longitudinally-invariant k⊥-clustering algorithms for hadron-hadron collisions Catani, S.; Dokshitzer, Yu. L.; Seymour, M. H. Nuclear Physics B, Vol. 406, Issue 1-2 https://doi.org/10.1016/0550-3213(93)90166-M	journal	September 1993
High-energy-physics event generation with Pythia 6.1 Sjöstrand, Torbjörn; Edén, Patrik; Friberg, Christer Computer Physics Communications, Vol. 135, Issue 2 https://doi.org/10.1016/S0010-4655(00)00236-8	journal	April 2001
Parton distributions for the LHC Martin, A. D.; Stirling, W. J.; Thorne, R. S. The European Physical Journal C, Vol. 63, Issue 2 https://doi.org/10.1140/epjc/s10052-009-1072-5	journal	July 2009
Parton fragmentation and string dynamics Andersson, B.; Gustafson, G.; Ingelman, G. Physics Reports, Vol. 97, Issue 2-3 https://doi.org/10.1016/0370-1573(83)90080-7	journal	July 1983
Cross section of isolated prompt photons in hadron-hadron collisions Catani, Stefano; Fontannaz, Michel; Guillet, Jean-Philippe Journal of High Energy Physics, Vol. 2002, Issue 05 https://doi.org/10.1088/1126-6708/2002/05/028	journal	May 2002
Supercolor Dimopoulos, S.; Raby, S. Nuclear Physics B, Vol. 192, Issue 2 https://doi.org/10.1016/0550-3213(81)90430-2	journal	December 1981
Gluon content of the nucleon probed with real and virtual photons Aurenche, P.; Baier, R.; Fontannaz, M. Physical Review D, Vol. 39, Issue 11 https://doi.org/10.1103/PhysRevD.39.3275	journal	June 1989
Measurement of inclusive prompt photon photoproduction at HERA Breitweg, J.; Chekanov, S.; Derrick, M. Physics Letters B, Vol. 472, Issue 1-2 https://doi.org/10.1016/S0370-2693(99)01450-1	journal	January 2000
Measurement of isolated photon production in deep inelastic ep scattering Chekanov, S.; Derrick, M.; Magill, S. Physics Letters B, Vol. 687, Issue 1 https://doi.org/10.1016/j.physletb.2010.02.045	journal	April 2010
On the characterisation of the underlying event Cacciari, Matteo; Salam, Gavin P.; Sapeta, Sebastian Journal of High Energy Physics, Vol. 2010, Issue 4 https://doi.org/10.1007/JHEP04(2010)065	journal	April 2010
Recent critical study of photon production in hadronic collisions Aurenche, P.; Guillet, J. Ph.; Pilon, E. Physical Review D, Vol. 73, Issue 9 https://doi.org/10.1103/PhysRevD.73.094007	journal	May 2006
Prompt photons in photoproduction at HERA Aaron, F. D.; Aldaya Martin, M.; Alexa, C. The European Physical Journal C, Vol. 66, Issue 1-2 https://doi.org/10.1140/epjc/s10052-010-1240-7	journal	January 2010
Measurement of the inclusive isolated prompt photon cross section in $p \bar{p}$ collisions at $\sqrt{s} = 1.96 TeV$ using the CDF detector Aaltonen, T.; Adelman, J.; González, B. Álvarez Physical Review D, Vol. 80, Issue 11 https://doi.org/10.1103/PhysRevD.80.111106	journal	December 2009
Parton distributions for LO generators Sherstnev, A.; Thorne, R. S. The European Physical Journal C, Vol. 55, Issue 4 https://doi.org/10.1140/epjc/s10052-008-0610-x	journal	May 2008
A multidimensional unfolding method based on Bayes' theorem D'Agostini, G. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 362, Issue 2-3 https://doi.org/10.1016/0168-9002(95)00274-X	journal	August 1995
Direct photon production at the CERN proton-antiproton collider Albajar, C.; Albrow, M. G.; Allkofer, O. C. Physics Letters B, Vol. 209, Issue 2-3 https://doi.org/10.1016/0370-2693(88)90968-9	journal	August 1988
The ATLAS Simulation Infrastructure Aad, G.; Abbott, B.; Abdallah, J. The European Physical Journal C, Vol. 70, Issue 3 https://doi.org/10.1140/epjc/s10052-010-1429-9	journal	September 2010
Direct-photon plus away-side jet production inpp collisions at $$\sqrt s = 63$$ GeV and a determination of the gluon distribution �kesson, T.; Albrow, M. G.; Almehed, S. Zeitschrift f�r Physik C Particles and Fields, Vol. 34, Issue 3 https://doi.org/10.1007/BF01548810	journal	September 1987
A new determination of αs using direct photon production cross sections in pp and collisions at GeV Werlen, M.; Ballocchi, G.; Breedon, R. E. Physics Letters B, Vol. 452, Issue 1-2 https://doi.org/10.1016/S0370-2693(99)00251-8	journal	April 1999
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
Supersymmetric technicolor Dine, Michael; Fischler, Willy; Srednicki, Mark Nuclear Physics B, Vol. 189, Issue 3 https://doi.org/10.1016/0550-3213(81)90582-4	journal	November 1981
HDECAY: a program for Higgs boson decays in the Standard Model and its supersymmetric extension Djouadi, A.; Kalinowski, J.; Spira, M. Computer Physics Communications, Vol. 108, Issue 1 https://doi.org/10.1016/S0010-4655(97)00123-9	journal	January 1998
Implications of dynamical symmetry breaking: An addendum Weinberg, S. Physical Review D, Vol. 19, Issue 4 https://doi.org/10.1103/PhysRevD.19.1277	journal	February 1979
HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes) Corcella, Gennaro; Knowles, Ian G.; Marchesini, Giuseppe Journal of High Energy Physics, Vol. 2001, Issue 01 https://doi.org/10.1088/1126-6708/2001/01/010	journal	January 2001
The ATLAS Experiment at the CERN Large Hadron Collider Collaboration, The ATLAS; Aad, G.; Abat, E. Journal of Instrumentation, Vol. 3, Issue 08 https://doi.org/10.1088/1748-0221/3/08/S08003	journal	August 2008
Next-to-leading order determination of fragmentation functions Bourhis, L.; Fontannaz, M.; Guillet, J. Ph. The European Physical Journal C, Vol. 19, Issue 1 https://doi.org/10.1007/s100520100579	journal	February 2001
Supersymmetric extension of the SU(3)×SU(2)×U(1) model Nappi, Chiara R.; Ovrut, Burt A. Physics Letters B, Vol. 113, Issue 2 https://doi.org/10.1016/0370-2693(82)90418-X	journal	June 1982
Dispelling the <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>N</mml:mi><mml:mn>3</mml:mn></mml:msup></mml:math> myth for the <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msub><mml:mi>k</mml:mi><mml:mi>t</mml:mi></mml:msub></mml:math> jet-finder Cacciari, Matteo; Salam, Gavin P. Physics Letters B, Vol. 641, Issue 1 https://doi.org/10.1016/j.physletb.2006.08.037	journal	September 2006
Successive combination jet algorithm for hadron collisions Ellis, Stephen D.; Soper, Davison E. Physical Review D, Vol. 48, Issue 7 https://doi.org/10.1103/PhysRevD.48.3160	journal	October 1993
Direct photon production at the CERN p̄p collider Appel, J. A.; Bagnaia, P.; Banner, M. Physics Letters B, Vol. 176, Issue 1-2 https://doi.org/10.1016/0370-2693(86)90957-3	journal	August 1986
Measurement of the Isolated Prompt Photon Production Cross Section in $p p$ Collisions at $\sqrt{s} = 7 TeV$ Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. Physical Review Letters, Vol. 106, Issue 8 https://doi.org/10.1103/PhysRevLett.106.082001	journal	February 2011