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

A measurement of the cross section for the inclusive production of isolated prompt photons in pp collisions at a center-of-mass energy √s=7 TeV is presented. The measurement covers the pseudorapidity ranges |ηγ|<1.37 and 1.52≤|ηγ|<1.81 in the transverse energy range 15≤EγT<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. The results are compared to predictions from next-to-leading-order perturbative QCD calculations.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ;  [10] ;  [11] ;  [12] ;  [13] ;  [14] ;  [15] ;  [16] ;  [17] ;  [18] ;  [19] ;  [20] more »;  [21] ;  [22] « less
  1. Albert-Ludwigs-Universitat, Freiburg (Germany). Fakultat fur Mathematik und Physik
  2. Univ. of Oklahoma, Norman, OK (United States). Homer L. Dodge Dept. of Physics and Astronomy
  3. Universitat Autonoma de Barcelona and ICREA, Barcelona (Spain). Institut de Fisica d' Altes Energies
  4. Universite de Geneve, Geneva (Switzerland). Section de Physique
  5. Oxford Univ., Oxford (United Kingdom). Dept. of Physics
  6. Academy of Sciences, Baku (Azerbaijan). Institute of Physics
  7. Oklahoma State Univ., Stillwater, OK (United States). Dept. of Physics
  8. Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  9. Tel Aviv Univ., Tel Aviv (Israel). Raymond and Beverly Sackler School of Physics and Astronomy
  10. Univ. Paris-Sud, Orsay (France). LAL
  11. Universita di Milano, Milano (Italy). Dipartimento di Fisica; INFN Sezione di Milano, Milano (Italy)
  12. Collegato di Udine (Italy). INFN Gruppo; ICTP, Trieste (Italy)
  13. Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Dept.
  14. Hampton Univ., Hampton, VA (United States); Dept. of Physics
  15. Yale Univ., New Haven, CT (United States). Dept. of Physics
  16. Werner-Heisenberg-Institut, Muchen (Germany). Max-Planck-Institut fur Physik
  17. Ludwig Maximilian Univ., Munich (Germany). Fakultat fur Physik
  18. Queen Mary Univ. of London, London (United Kingdom). Dept. of Physics
  19. Rutherford Appleton Laboratory, Didcot (United Kingdom). Particle Physics Dept.
  20. Brandeis Univ., Waltham, MA (United States). Dept. of Physics
  21. Universidad de Granada, Granada (Spain). Departamento de Fisica Teorica y del Cosmos and CAFPE
  22. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
OSTI Identifier:
1100069
Type:
Published Article
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 83; Journal Issue: 5; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English