4.8 Article

Measurements of the Nuclear Modification Factor for Jets in Pb plus Pb Collisions at √SNN=2.76 TeV with the ATLAS Detector

Journal

PHYSICAL REVIEW LETTERS
Volume 114, Issue 7, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.072302

Keywords

-

Funding

  1. ANPCyT, Argentina
  2. YerPhI, Armenia
  3. ARC, Australia
  4. BMWFW and FWF, Austria
  5. ANAS, Azerbaijan
  6. SSTC, Belarus
  7. CNPq and FAPESP Brazil
  8. NSERC, NRC, and CFI, Canada
  9. CERN
  10. CONICYT, Chile
  11. CAS, MOST, and NSFC, China
  12. COLCIENCIAS, Colombia
  13. MSMT CR, MPO CR, and VSC CR, Czech Republic
  14. DNRF, DNSRC, and Lundbeck Foundation, Denmark
  15. EPLANET, ERC, and NSRF, European Union
  16. IN2P3-CNRS, CEA-DSM/IRFU, France
  17. GNSF, Georgia
  18. BMBF, DFG, HGF, MPG, and AvH Foundation, Germany
  19. GSRT and NSRF, Greece
  20. ISF, MINERVA, GIF, I-CORE, and Benoziyo Center, Israel
  21. INFN, Italy
  22. MEXT and JSPS, Japan
  23. CNRST, Morocco
  24. FOM and NWO, Netherlands
  25. BRF and RCN, Norway
  26. MNiSW and NCN, Poland
  27. GRICES and FCT, Portugal
  28. MNE/IFA, Romania
  29. MES of Russia and ROSATOM, Russian Federation
  30. JINR
  31. MSTD, Serbia
  32. MSSR, Slovakia
  33. ARRS and MIZS, Slovenia
  34. DST/NRF, South Africa
  35. MINECO, Spain
  36. SRC andWallenberg Foundation, Sweden
  37. SER, SNSF, and Cantons of Bern and Geneva, Switzerland
  38. NSC, Taiwan
  39. TAEK, Turkey
  40. STFC, the Royal Society, and Leverhulme Trust, United Kingdom
  41. DOE and NSF, United States of America
  42. CERNATLAS Tier-1 facilities at TRIUMF (Canada)
  43. NDGF (Denmark, Norway, and Sweden)
  44. CC-IN2P3 (France)
  45. KIT/GridKA (Germany)
  46. INFN-CNAF (Italy)
  47. NL-T1 (Netherlands)
  48. PIC (Spain)
  49. ASGC (Taiwan)
  50. RAL (United Kingdom)
  51. BNL (USA)
  52. STFC [ST/L006480/1, ST/H00100X/1, ST/H00100X/2, ST/K50208X/1, ST/M004821/1, PP/D002915/1, PP/E000355/1, PP/E002846/1, ST/J004928/1, ST/I00372X/1, ST/K003658/1, ST/L001179/1, ST/L003414/1, ST/G502320/1, ST/I006080/1, ST/L001195/1, ST/L006464/1, ST/N000307/1, ST/J005487/1, ST/J005525/1, ST/K000705/1, ST/M001407/1, ST/M006980/1, ST/J501074/1, ST/J00474X/1, ST/M001504/1, ST/N000420/1, ST/M003213/1, ST/J004944/1, ST/L003325/1, ST/K001302/1, ST/L003511/1, ST/M002306/1, ST/M503575/1, ST/J005576/1, ST/M000664/1, ST/L000970/1, ST/N000277/1, ST/I005803/1, PP/E003087/1, ST/I000186/1, ST/L003112/1, ST/I000178/1, ST/K001388/1, ST/M001733/1, ST/K001329/1, ST/G50228X/1, ST/K001248/1, ST/K00137X/1, ST/I006056/1] Funding Source: UKRI
  53. Science and Technology Facilities Council [ST/L000970/1 ATLAS Upgrades, ST/M004821/1 GRIDPP, ST/L003325/1, ST/I00372X/1, ST/J00474X/1, ST/L003112/1, ST/K001302/1, ST/K001264/1 ATLAS, ST/I005803/1 GRIDPP, ST/K001248/1, ST/M003213/1, ST/G50228X/1, ST/L001195/1, ST/M001407/1, ST/M002306/1 ATLAS Upgrades, ST/L000970/1 ATLAS Upgrade, ST/K001396/1 ATLAS, ST/I000178/1, ST/K003658/1 GRIDPP, ST/M006980/1, ST/M002071/1 ATLAS Upgrades, 1521422, PP/D002915/1, ST/J005525/1, ST/M001474/1, ST/M000664/1, ST/J501074/1, ST/K003658/1, ST/L001179/1 ATLAS Upgrades, ST/M503575/1, ST/I005803/1, ST/L006480/1, ST/M007103/1 ATLAS Upgrades, ST/K001310/1 ATLAS, ST/I00372X/1 GRIDPP, ST/G502320/1, ST/L001209/1 ATLAS Upgrades, ST/K00137X/1, ST/L001179/1, ST/L003414/1, ST/N000277/1, 1366364, ST/J004944/1, ST/M001504/1, ST/I006056/1, ST/K001418/1, ATLAS, ST/K001329/1, 1575161, ST/K001426/1 ATLAS, ST/K000705/1, ST/N000420/1, ST/J005576/1, ST/K001310/1 LHCb Upgrades, ST/M006980/1 ATLAS Upgrades, ST/K001388/1, ST/I000186/1, ST/I006080/1, ST/N000307/1, ST/J004928/1, PP/E003087/1, ST/H00100X/2, ST/M004821/1, PP/E002846/1, ST/M001733/1, ST/J00474X/1 ATLAS Upgrades, ST/K001310/1, PP/E000444/1, 1201187, 1082012, ST/L006464/1, GRIDPP, ST/M002306/1, ST/L001179/1 ATLAS Upgrade, ST/K001310/1 ATLAS Upgrades, ST/I006056/1 ATLAS Upgrade, ST/I006056/1 ATLAS Upgrades, PP/E000355/1, ST/K50208X/1, ST/J005487/1, ST/J004928/1 ATLAS Upgrades, ST/H00100X/1, ST/L000970/1, ST/J004928/1 ATLAS Upgrade, ST/L003511/1, ST/K001310/1 LHCb] Funding Source: researchfish
  54. Direct For Mathematical & Physical Scien
  55. Division Of Physics [1506173, 1119200, 1305037] Funding Source: National Science Foundation
  56. ICREA Funding Source: Custom

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Measurements of inclusive jet production are performed in pp and Pb + Pb collisions at root SNN = 2.76 TeV with the ATLAS detector at the LHC, corresponding to integrated luminosities of 4.0 and 0.14 nb(-1), respectively. The jets are identified with the anti-k(t) algorithm with R = 0.4, and the spectra are measured over the kinematic range of jet transverse momentum 32 < pT < 500 GeV and absolute rapidity |y| < 2.1 and as a function of collision centrality. The nuclear modification factor R-AA is evaluated, and jets are found to be suppressed by approximately a factor of 2 in central collisions compared to pp collisions. The RAA shows a slight increase with pT and no significant variation with rapidity.

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