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

Adam, J. and Antičić, Tome and Erhardt, Filip and Gotovac, Sven and Mudnić, Eugen and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Utrobičić, Antonija and Vicković, Linda and Zyzak, M. (ALICE Collaboration) (2016) Measurement of D-meson production versus multiplicity in p-Pb collisions at √sNN=5.02 TeV. Journal of High Energy Physics, 2016 (8). p. 78. ISSN 1029-8479

PDF - Published Version
Available under License Creative Commons Attribution.
Language: English

Download (921kB) | Preview


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.

Item Type: Article
Keywords: D-meson, multiplicity, p-lead
Date: 11 August 2016
Subjects: NATURAL SCIENCES > Physics
Additional Information: Open Access, Copyright CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. Received: February 25, 2016. Revised: June 23, 2016. Accepted: July 13, 2016. Published: August 11, 2016.
Divisions: Faculty of Science > Department of Physics
Publisher: Springer
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 30 Oct 2017 12:14
Last Modified: 04 Nov 2018 12:47

Actions (login required)

View Item View Item