Measurement of D-meson production versus multiplicity in p-Pb collisions at √sNN=5.02 TeV (CROSBI ID 236254)
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Podaci o odgovornosti
Adam, J. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zyzak, M.
ALICE Collaboration
engleski
Measurement of D-meson production versus multiplicity in p-Pb collisions at √sNN=5.02 TeV
The measurement of prompt D-meson production as a function of multiplicity in p-Pb collisions at √sNN=5.02 TeV with the ALICE detector at the LHC is reported. D0, D+ and D∗+ mesons are reconstructed via their hadronic decay channels in the centre-of-mass rapidity range −0.96< ycms< 0.04 and transverse momentum interval 1< pT< 24 GeV/c. The multiplicity dependence of D- meson production is examined by either comparing yields in p-Pb collisions in different event classes, selected based on the multiplicity of produced particles or zero- degree energy, with those in pp collisions, scaled by the number of binary nucleon-nucleon collisions (nuclear modification factor) ; as well as by evaluating the per-event yields in p-Pb collisions in different multiplicity intervals normalised to the multiplicity- integrated ones (relative yields). The nuclear modification factors for D0, D+ and D∗+ are consistent with one another. The D-meson nuclear modification factors as a function of the zero-degree energy are consistent with unity within uncertainties in the measured pT regions and event classes. The relative D-meson yields, calculated in various pT intervals, increase as a function of the charged-particle multiplicity. The results are compared with the equivalent pp measurements at √s=7 TeV as well as with EPOS~3 calculations.
D-meson ; multiplicity ; p-lead
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Podaci o izdanju
2016 (8)
2016.
078
43
objavljeno
1126-6708
1029-8479
10.1007/JHEP08(2016)078