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Measurement of the production of high-pT electrons from heavy-flavour hadron decays in Pb- Pb collisions at √sNN = 2.76 TeV

Adam, J.
•
Adamovà ¡, D.
•
Aggarwal, M. M.
altro
Zmeskal, J.
2017
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
Electrons from heavy-flavour hadron decays (charm and beauty) were measured with the ALICE detector in Pb–Pb collisions at a centre-of-mass of energy √sNN = 2.76 TeV. The transverse momentum (pT) differential production yields at mid-rapidity were used to calculate the nuclear modification factor RAA in the interval 3 < pT < 18 GeV/c. The RAA shows a strong suppression compared to binary scaling of pp collisions at the same energy (up to a factor of 4) in the 10% most central Pb–Pb collisions. There is a centrality trend of suppression, and a weaker suppression (down to a factor of 2) in semi-peripheral (50–80%) collisions is observed. The suppression of electrons in this broad pT interval indicates that both charm and beauty quarks lose energy when they traverse the hot medium formed in Pb–Pb collisions at LHC.
DOI
10.1016/j.physletb.2017.05.060
WOS
WOS:000406183300069
Archivio
http://hdl.handle.net/11368/2916056
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85020315438
http://www.sciencedirect.com/science/journal/03702693
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/3.0/it/
FVG url
https://arts.units.it/bitstream/11368/2916056/1/PLB_771(2017)467-481.pdf
Soggetti
  • Nuclear and High Ener...

  • ALICE

  • LHC

Web of Science© citazioni
28
Data di acquisizione
Mar 20, 2024
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