Naslov
Measurement of prompt D-Meson production in p−Pb collisions at sNN−−−−√=5.02  TeV

Autori
Abelev, B. ... ; Antičić, Tome ; Gotovac, Sven ; Mudnić, Eugen ; Planinić, Mirko ; Poljak, Nikola ; Simatović, Goran ; Šuša, Tatjana ; Vicković, Linda ; et al.

Izvornik
Physical Review Letters (0031-9007) 113 (2014), 23; 232301-1

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

Ključne riječi
D meson; p-Pb; ALICE

Sažetak
The pT-differential production cross sections of the prompt charmed mesons D0, D+, D*+, and D+s and their charge conjugate in the rapidity interval −0.96<ycms<0.04 were measured in p−Pb collisions at a center-of-mass energy sNN‾‾‾‾√=5.02  TeV with the ALICE detector at the LHC. The nuclear modification factor RpPb, quantifying the D-meson yield in p−Pb collisions relative to the yield in pp collisions scaled by the number of binary nucleon- nucleon collisions, is compatible within the 15%–20% uncertainties with unity in the transverse momentum interval 1<pT<24  GeV/c. No significant difference among the RpPb of the four D-meson species is observed. The results are described within uncertainties by theoretical calculations that include initial-state effects. The measurement adds experimental evidence that the modification of the momentum spectrum of D mesons observed in Pb-Pb collisions with respect to pp collisions is due to strong final-state effects induced by hot partonic matter.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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