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Measurement of the nuclear modification factor of electrons from heavy-flavour decays at mid-rapidity in Pb–Pb collisions at = 2.76 TeV with ALICE

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Published 10 November 2011 • CERN 2011. Published under licence by IOP Publishing Ltd
, , Citation Yvonne Pachmayer and (forthe ALICE Collaboration) 2011 J. Phys. G: Nucl. Part. Phys. 38 124186 DOI 10.1088/0954-3899/38/12/124186

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1 Physikalisches Institut der Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany

Dates

  1. Received 30 June 2011
  2. Published

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0954-3899/38/12/124186

Abstract

We present results on inclusive electrons for 1.5 <pT < 6 GeV/c in Pb–Pb collisions at = 2.76 TeV measured with ALICE at the LHC and compare these to a cocktail of background electron sources. The excess of electrons beyond the cocktail at high momenta (pT > 3.5 GeV/c) is attributed to electrons from heavy-flavour decays. The corresponding nuclear modification factor indicates heavy-flavour suppression by a factor of 1.5–4.

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10.1088/0954-3899/38/12/124186