4.4 Article

Measurement of the production cross section for pairs of isolated photons in pp collisions at √s=7 TeV

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 1, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP01(2012)133

Keywords

Hadron-Hadron Scattering

Funding

  1. FMSR (Austria)
  2. FNRS and FWO (Belgium)
  3. CNPq, CAPES, FAPERJ, and FAPESP (Brazil)
  4. MES (Bulgaria)
  5. CERN
  6. CAS, MoST, and NSFC (China)
  7. COLCIENCIAS (Colombia)
  8. MSES (Croatia)
  9. RPF (Cyprus)
  10. Academy of Sciences and NICPB (Estonia)
  11. Academy of Finland, MEC, and HIP (Finland)
  12. CEA and CNRS/IN2P3 (France)
  13. BMBF, DFG, and HGF (Germany)
  14. GSRT (Greece)
  15. OTKA and NKTH (Hungary)
  16. DAE and DST (India)
  17. IPM (Iran)
  18. SFI (Ireland)
  19. INFN (Italy)
  20. NRF and WCU (Korea)
  21. LAS (Lithuania)
  22. CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico)
  23. MSI (New Zealand)
  24. PAEC (Pakistan)
  25. SCSR (Poland)
  26. FCT (Portugal)
  27. JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)
  28. MST, MAE and RFBR (Russia)
  29. MSTD (Serbia)
  30. MICINN and CPAN (Spain)
  31. Swiss Funding Agencies (Switzerland)
  32. NSC (Taipei)
  33. TUBITAK and TAEK (Turkey)
  34. STFC (United Kingdom)
  35. DOE and NSF (USA)
  36. Marie-Curie programme
  37. European Research Council (European Union)
  38. Leventis Foundation
  39. A. P. Sloan Foundation
  40. Alexander von Humboldt Foundation
  41. Belgian Federal Science Policy Office
  42. Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
  43. Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
  44. Council of Science and Industrial Research, India
  45. STFC [ST/H000925/1, PP/E002803/1, ST/I005912/1, ST/I505580/1, ST/J005665/1, ST/F007094/1, ST/J004901/1, ST/I505572/1, ST/F007434/1, ST/H00081X/2] Funding Source: UKRI
  46. Science and Technology Facilities Council [ST/I005912/1 GRIDPP, ST/K001604/1 CMS Upgrade, ST/K001604/1 SuperNEMO, ST/J005665/1, ST/K001604/1 LHCb, ST/I505572/1, PP/E002803/1, ST/J004901/1, ST/K001604/1 T2K, ST/K001604/1, ST/I505580/1, PP/D004284/1, CMS, ST/F007434/1, ST/K001604/1 DMUK, ST/K001604/1 LHCb Upgrades, ST/K001604/1 GRIDPP, 982358, ST/K001604/1 MICE/UKNF, ST/H000925/1, GRIDPP, ST/I005912/1, ST/I003622/1 GRIDPP, ST/F007094/1] Funding Source: researchfish

Ask authors/readers for more resources

The integrated and differential cross sections for the production of pairs of isolated photons is measured in proton-proton collisions at a centre-of-mass energy of 7TeV with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 36 pb(-1) is analysed. A next-to-leading-order perturbative QCD calculation is compared to the measurements. A discrepancy is observed for regions of the phase space where the two photons have an azimuthal angle difference Delta phi less than or similar to 2.8 rad.

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