# Measurements of the Nuclear Modification Factor for Jets in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with the ATLAS Detector

Abstract : Measurements of inclusive jet production are performed in $pp$ and Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with the ATLAS detector at the LHC, corresponding to integrated luminosities of 4.0 $\mathrm{pb}^{-1}$ and 0.14 $\mathrm{nb}^{-1}$, 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 $32 < p_{\mathrm{T}} < 500$ GeV, and absolute rapidity $|y| < 2.1$ and as a function of collision centrality. The nuclear modification factor, $R_{\mathrm{AA}}$, is evaluated and jets are found to be suppressed by approximately a factor of two in central collisions compared to $pp$ collisions. The $R_{\mathrm{AA}}$ shows a slight increase with $p_{\mathrm{T}}$ and no significant variation with rapidity.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2015, 114 (7), pp.072302. 〈10.1103/PhysRevLett.114.072302〉

http://hal.in2p3.fr/in2p3-01081855
Contributeur : Emmanuelle Vernay <>
Soumis le : mercredi 12 novembre 2014 - 08:11:14
Dernière modification le : vendredi 31 août 2018 - 16:13:10

### Citation

G. Aad, S. Albrand, J. Brown, J. Collot, S. Crépé-Renaudin, et al.. Measurements of the Nuclear Modification Factor for Jets in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with the ATLAS Detector. Physical Review Letters, American Physical Society, 2015, 114 (7), pp.072302. 〈10.1103/PhysRevLett.114.072302〉. 〈in2p3-01081855〉

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