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Abstract:

The distributions of transverse momentum and longitudinal momentum fraction of charged particles in jets are measured in Pb+Pb and pp collisions with the ATLAS detector at the LHC. The distributions are measured as a function of jet transverse momentum and rapidity. The analysis utilises an integrated luminosity of 0.14 nb -1 of Pb+Pb data and 4.0 pb -1 of pp data collected in 2011 and 2013, respectively, at the same centre-of-mass energy of 2.76 TeV per colliding nucleon pair. The distributions measured in pp collisions are used as a reference for those measured in Pb+Pb collisions in order to evaluate the impact on the internal structure of jets from the jet energy loss of fast partons propagating through the hot, dense medium created in heavy-ion collisions. Modest but significant centrality-dependent modifications of fragmentation functions in Pb+Pb collisions with respect to those in pp collisions are seen. No significant dependence of modifications on jet p T and rapidity selections is observed except for the fragments with the highest transverse momenta for which some reduction of yields is observed for more forward jets. © 2017, CERN for the benefit of the ATLAS collaboration.

Registro:

Documento: Artículo
Título:Measurement of jet fragmentation in Pb+Pb and pp collisions at √sNN=2.76 TeV with the ATLAS detector at the LHC
Autor:Aaboud, M. et al.
Este artículo contiene 2860 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2860 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2017
Volumen:77
Número:6
DOI: http://dx.doi.org/10.1140/epjc/s10052-017-4915-5
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v77_n6_p_Aaboud

Referencias:

  • Adcox, K., Formation of dense partonic matter in relativistic nucleus nucleus collisions at RHIC: experimental evaluation by the PHENIX Collaboration (2005) Nucl. Phys. A, 757, p. 184. , arXiv:nucl-ex/0410003
  • Adams, J., Experimental and theoretical challenges in the search for the quark gluon plasma: the STAR collaboration’s critical assessment of the evidence from RHIC collisions (2005) Nucl. Phys. A, 757, p. 102. , arXiv:nucl-ex/0501009
  • Back, B.B., The PHOBOS perspective on discoveries at RHIC (2005) Nucl. Phys. A, 757, p. 28. , arXiv:nucl-ex/0410022 [nucl-ex]
  • Arsene, I., Quark gluon plasma and color glass condensate at RHIC? The perspective from the BRAHMS experiment (2005) Nucl. Phys. A, 757, p. 1. , arXiv:nucl-ex/0410020 [nucl-ex]
  • Mehtar-Tani, Y., Milhano, J.G., Tywoniuk, K., Jet physics in heavy-ion collisions (2013) Int. J. Mod. Phys. A, 28, p. 1340013. , arXiv:1302.2579 [hep-ph]
  • Qin, G.-Y., Wang, X.-N., Jet quenching in high-energy heavy-ion collisions (2015) Int. J. Mod. Phys. E, 24, p. 1530014. , arXiv:1511.00790 [hep-ph]
  • Blaizot, J.-P., Mehtar-Tani, Y., Jet structure in heavy ion collisions (2015) Int. J. Mod. Phys. E, 24, p. 1530012. , arXiv:1503.05958 [hep-ph]
  • Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead-lead collisions at (2013) Phys. Lett. B 719, 220, , ATLAS Collaboration.[hep-ex]
  • Abelev, B., Measurement of charged jet suppression in Pb–Pb collisions at sNN = 2.76 TeV (2014) JHEP 03, 013, , [nucl-ex]
  • Measurements of the nuclear modification factor for jets in Pb+Pb collisions at sNN=2.76 TeV with the ATLAS detector (2015) Phys. Rev. Lett. 114, 072302, , [hep-ex]
  • Adam, J., Measurement of jet suppression in central Pb–Pb collisions at sNN = 2.76 TeV (2015) Phys. Lett. B, 746, p. 1. , arXiv:1502.01689 [nucl-ex]
  • Measurement of inclusive jet cross-sections in pp and PbPb collisions at sNN=2.76 TeV (2016). [nucl-ex], , CMS Collaboration
  • Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at sNN=2.76 TeV with the ATLAS detector (2014) Phys. Lett. B 739, 320, , ATLAS Collaboration.[hep-ex]
  • Collaboration, C.M.S., Modification of jet shapes in PbPb collisions at sNN=2.76 TeV (2014) Phys. Lett. B, 730, p. 243. , arXiv:1310.0878 [nucl-ex]
  • Collaboration, C.M.S., Measurement of jet fragmentation in PbPb and pp collisions at sNN=2.76 TeV (2014) Phys. Rev. C, 90, p. 24908. , arXiv:1406.0932 [nucl-ex]
  • Adam, J., Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb–Pb collisions at sNN=2.76 TeV (2015) JHEP 09, 170, , [nucl-ex]
  • Collaboration, C.M.S., Observation and studies of jet quenching in PbPb collisions at nucleon–nucleon center-of-mass energy = 2.76 TeV (2011) Phys. Rev. C, 84, p. 24906. , arXiv:1102.1957 [nucl-ex]
  • Cacciari, M., Salam, G.P., Soyez, G., The anti- k t jet clustering algorithm (2008) JHEP, 4, p. 63. , arXiv:0802.1189
  • (2008) JINST The ATLAS experiment at the CERN large hadron collider, 3, p. S08003
  • Performance of the ATLAS detector using first collision data JHEP 09, 056 (2010), 1005, p. 5254
  • Cornelissen, T., Elsing, M., Gavrilenko, I., Liebig, W., Moyse, E., The new ATLAS track reconstruction (NEWT) (2008) J. Phys. Conf. Ser., 119, p. 32014
  • Measurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead–lead collisions at sNN=2.76 TeV with the ATLAS detector (2012) Phys. Lett. B 707, 330, , [hep-ex]
  • The performance of the jet trigger for the ATLAS detector during 2011 data taking (2016) Eur. Phys. J. C 76, 526, , [hep-ex]
  • Performance of the ATLAS trigger system in 2010 (2012) Eur. Phys. J. C 72, 1849
  • Sjöstrand, T., Mrenna, S., Skands, P.Z., PYTHIA 6.4 Physics and manual JHEP 05
  • ATLAS tunes of PYTHIA 6 and Pythia 8 for MC11. ATL-PHYS-PUB-2011-009, , https://cds.cern.ch/record/1363300
  • Pumplin, J., Stump, D., Huston, J., Lai, H., Nadolsky, P.M., New generation of parton distributions with uncertainties from global QCD analysis (2002) JHEP, 7, p. 12. , arXiv:hep-ph/0201195 [hep-ph]
  • The ATLAS simulation infrastructure Eur. Phys. J C 70, 823 (2010), 1005, p. 4568
  • Agostinelli, S., GEANT4: a simulation toolkit (2003) Nucl. Instrum. Meth., A506, p. 250
  • Jet energy measurement with the ATLAS detector in proton–proton collisions at s=7 TeV (2013) Eur. Phys. J. C 73, 2304
  • Poskanzer, A.M., Voloshin, S.A., Methods for analyzing anisotropic flow in relativistic nuclear collisions (1998) Phys. Rev. C, 58, p. 1671. , arXiv:nucl-ex/9805001 [nucl-ex]
  • Measurement of charged-particle spectra in Pb+Pb collisions at sNN=2.76 TeV with the ATLAS detector at the LHC (2015) JHEP 09, 050, , ATLAS Collaboration.[hep-ex]
  • D’Agostini, G., A multidimensional unfolding method based on Bayes’ theorem (1995) Nucl. Instrum. Meth. A, 362, p. 487
  • http://hepunx.rl.ac.uk/~adye/software/unfold/RooUnfold.html, Accessed 10 Dec 2016; Jet energy scale and its uncertainty for jets reconstructed using the ATLAS heavy ion jet algorithm. ATLAS-CONF-2015-016, , https://cds.cern.ch/record/2008677, ATLAS Collaboration
  • Alver, M.B., Baker, M., Loizides, C., P. Steinberg The PHOBOS Glauber Monte Carlo. arXiv, 805, p. 4411
  • Miller, M.L., Reygers, K., Sanders, S.J., Steinberg, P., Glauber modeling in high energy nuclear collisions (2007) Annu. Rev. Nucl. Part. Sci., 57, p. 205. , arXiv:nucl-ex/0701025 [nucl-ex]
  • Armesto, N., Heavy ion collisions at the LHC—last call for predictions (2008) J. Phys. G, 35, p. 54001. , arXiv:0711.0974 [hep-ph]
  • Spousta, M., Cole, B., Interpreting single jet measurements in Pb + Pb collisions at the LHC (2016) Eur. Phys. J. C, 76, p. 50. , arXiv:1504.05169 [hep-ph]
  • (2016) Computing Acknowledgements 2016–2017. tech. rep.ATL-GEN-PUB-2016-002 CERN, , https://cds.cern.ch/record/2202407, ATLAS

Citas:

---------- APA ----------
(2017) . Measurement of jet fragmentation in Pb+Pb and pp collisions at √sNN=2.76 TeV with the ATLAS detector at the LHC. European Physical Journal C, 77(6).
http://dx.doi.org/10.1140/epjc/s10052-017-4915-5
---------- CHICAGO ----------
Aaboud, M. "Measurement of jet fragmentation in Pb+Pb and pp collisions at √sNN=2.76 TeV with the ATLAS detector at the LHC" . European Physical Journal C 77, no. 6 (2017).
http://dx.doi.org/10.1140/epjc/s10052-017-4915-5
---------- MLA ----------
Aaboud, M. "Measurement of jet fragmentation in Pb+Pb and pp collisions at √sNN=2.76 TeV with the ATLAS detector at the LHC" . European Physical Journal C, vol. 77, no. 6, 2017.
http://dx.doi.org/10.1140/epjc/s10052-017-4915-5
---------- VANCOUVER ----------
Aaboud, M. Measurement of jet fragmentation in Pb+Pb and pp collisions at √sNN=2.76 TeV with the ATLAS detector at the LHC. Eur. Phys. J. C. 2017;77(6).
http://dx.doi.org/10.1140/epjc/s10052-017-4915-5