Measurements of jet quenching and heavy flavor production with the ATLAS detector

Angerami, A. and Aad, G. and Abajyan, T. and Abbott, B. and Abdallah, J. and Abdel, Khalek S. and Abdelalim, A. A. and Abdinov, O. and Aben, R. and Abi, B. and Abolins, M. and AbouZeid, O. S. and Abramowicz, H. and Abreu, H. and Acerbi, E. and Acharya, B. S. and Adamczyk, L. and Adams, D. L. and Addy, T. N. and Adelman, J. and Adomeit, S. and Adragna, P. and Adye, T. and Aefsky, S. and Aguilar-Saavedra, J. A. and Agustoni, M. and Aharrouche, M. and Ahlen, S. P. and Ahles, F. and Ahmad, A. and Krasznahorkay, Attila and Pásztor, Gabriella and Tóth, József (2013) Measurements of jet quenching and heavy flavor production with the ATLAS detector. NUCLEAR PHYSICS A, 910. pp. 12-19. ISSN 0375-9474

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Abstract

Measurements of jet suppression in Pb+Pb collisions by the ATLAS Collaboration are reported. The production of inclusive jet yields as a function of jet pT, collision centrality and jet size parameter R are measured and presented through the central-to-peripheral ratio, RCP. Jets are found to be suppressed in central collisions relative to peripheral collisions by approximately a factor of two. The suppression is found to show almost no variation with jet pT, and the RCP is found to increase slighly with increasing R. Measurements of heavy quark energy loss are also presented using muons from semi-leptonic decays of heavy flavor hadrons. The maximal suppression is observed to be RCP ∼ 0.5 and shows no significant depedence on the muon pT.

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