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Measurement of electrons from heavy-flavour hadron decays in p–Pb collisions at √sNN=5.02TeV

J., Adam ; Christiansen, P. LU ; Ljunggren, H. ; Oskarsson, A. LU ; Richert, T. LU ; Silvermyr, D. LU orcid ; Søgaard, C. LU ; Stenlund, E. LU ; Vislavicius, V. LU and M., Zyzak (2016) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 754. p.81-93
Abstract
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... (More)
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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published
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Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
754
pages
13 pages
publisher
Elsevier
external identifiers
  • scopus:85040844430
ISSN
0370-2693
DOI
10.1016/j.physletb.2015.12.067
language
English
LU publication?
yes
id
5d19dd91-5d15-49ad-9053-d069e0d1ca5a
date added to LUP
2022-04-04 14:56:51
date last changed
2023-04-02 23:13:27
@article{5d19dd91-5d15-49ad-9053-d069e0d1ca5a,
  abstract     = {{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&lt;pT&lt;12 GeV/c and the rapidity range −1.065&lt;ycms&lt;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. <br/>}},
  author       = {{J., Adam and Christiansen, P. and Ljunggren, H. and Oskarsson, A. and Richert, T. and Silvermyr, D. and Søgaard, C. and Stenlund, E. and Vislavicius, V. and M., Zyzak}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  pages        = {{81--93}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Measurement of electrons from heavy-flavour hadron decays in p–Pb collisions at √sNN=5.02TeV}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2015.12.067}},
  doi          = {{10.1016/j.physletb.2015.12.067}},
  volume       = {{754}},
  year         = {{2016}},
}