Measurement of prompt D<SUP>0</SUP>, D<SUP>+</SUP>, D*<SUP>+</SUP>, and Ds<SUP>+</SUP> production in p-Pb collisions at √sNN=5:02 TeV

Citations

WEB OF SCIENCE

43
Citations

SCOPUS

58

초록

The measurement of the production of prompt D-0, D+, D*+, and D-S(+) = 5.02 TeV, with an integrated luminosity of 292 +/- 11 mu b(-1), are reported. Differential production cross sections are measured at mid-rapidity (-0.96 < y(cms)< 0.04) as a function of transverse momentum (p(T)) in the intervals 0 < p(T)< 36 GeV/c for D-0, 1 < p(T)< 36 GeV/c for D+ and D*+, and 2 < p(T)< 24 GeV/c for D+ mesons. For each species, the nuclear modification factor R-pPb is calculated as a function of p(T) using a proton-proton (pp) ref- erence measured at the same collision energy. The results are compatible with unity in the whole p(T) range. The average of the non-strange D mesons R-pPb is compared with theoretical model predictions that include initial-state effects and parton transport model predictions. The p(T) dependence of the D-0, D+, and D*+ nuclear modification factors is also reported in the interval 1 < p(T)< 36 GeV/c as a function of the collision centrality, and the central-to-peripheral ratios are computed from the D-meson yields measured in different centrality classes. The results are further compared with charged-particle measurements and a similar trend is observed in all the centrality classes. The ratios of the p(T)-differential cross sections of D-0, D+, D*+, and D-S(+) mesons are also reported. The D-S(+) and D+ yields are compared as a function of the charged-particle multiplicity for several p(T) intervals. No modification in the relative abundances of the four species is observed with respect to pp collisions within the statistical and systematic uncertainties.

키워드

Heavy Ion ExperimentsSIDE ANGULAR-CORRELATIONSLONG-RANGECGC PREDICTIONSHEAVYMULTIPLICITYCOLLECTIVITYQUARKPLUSPROTON
제목
Measurement of prompt D<SUP>0</SUP>, D<SUP>+</SUP>, D*<SUP>+</SUP>, and Ds<SUP>+</SUP> production in p-Pb collisions at √sNN=5:02 TeV
저자
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DOI
10.1007/JHEP12(2019)092
발행일
2019-12-11
유형
Article
저널명
Journal of High Energy Physics
12