Measurement of electrons from heavy-flavour hadron decays in p–Pb collisions at √sNN = 5.02 TeV
ALICE Collaboration. (2016). Measurement of electrons from heavy-flavour hadron decays in p–Pb collisions at √sNN = 5.02 TeV. Physics Letters B, 754, 81-93. https://doi.org/10.1016/j.physletb.2015.12.067
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Physics Letters BTekijät
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2016Tekijänoikeudet
© 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
The production of electrons from heavy-flavour hadron decays was measured as a function of transverse
momentum (pT) in minimum-bias p–Pb collisions at √sNN = 5.02 TeV using the ALICE detector at the
LHC. The measurement covers the pT interval 0.5 < pT < 12 GeV/c and the rapidity range −1.065 <
ycms < 0.135 in the centre-of-mass reference frame. The contribution of electrons from background
sources was subtracted using an invariant mass approach. The nuclear modification factor RpPb was
calculated by comparing the pT-differential invariant cross section in p–Pb collisions to a pp reference at
the same centre-of-mass energy, which was obtained by interpolating measurements at √s = 2.76 TeV
and √s = 7 TeV. The RpPb is consistent with unity within uncertainties of about 25%, which become
larger for pT below 1 GeV/c. The measurement shows that heavy-flavour production is consistent with
binary scaling, so that a suppression in the high-pT yield in Pb–Pb collisions has to be attributed to
effects induced by the hot medium produced in the final state. The data in p–Pb collisions are described
by recent model calculations that include cold nuclear matter effects.
...
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https://converis.jyu.fi/converis/portal/detail/Publication/25546377
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