Naslov
Measurement of D-meson production versus multiplicity in p-Pb collisions at √sNN=5.02 TeV

Autori
Adam, J. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Utrobičić, Antonija ; ... ; Vicković, Linda ; ... ; Zyzak, M.

Kolaboracija
ALICE Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 2016 (2016), 8; 078, 43

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
D-meson ; multiplicity ; p-lead

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA