Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Grossmann, J.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, N.; Krätschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Pree, E.; Rabady, D.; Rad, N.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Spanring, M.; Spitzbart, D.; Waltenberger, W.; Wittmann, J.; Wulz, C.-E.; Zarucki, M.; Chekhovsky, V.; Mossolov, V.; Suarez Gonzalez, J.; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lauwers, J.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; De Bruyn, I.; De Clercq, J.; Deroover, K.; Flouris, G.; Lontkovskyi, D.; Lowette, S.; Moortgat, S.; Moreels, L.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Luetic, J.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Zhang, F.; Cimmino, A.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Roskas, C.; Salva, S.; Tytgat, M.; Verbeke, W.; Zaganidis, N.; Bakhshiansohi, H.; Bondu, O.; Brochet, S.; Bruno, G.; Caputo, C. et al.
Referencia bibliográfica
Physics Letters B, Volume 782, p. 474-496.
Fecha de publicación:
7
2018
Número de citas
111
Número de citas referidas
94
Descripción
The transverse momentum (pT) spectrum of prompt D0
mesons and their antiparticles has been measured via the hadronic decay
channels D0 →K-π+ and
D‾0 →K+π- in pp and PbPb
collisions at a centre-of-mass energy of 5.02 TeV per nucleon pair with
the CMS detector at the LHC. The measurement is performed in the
D0 meson pT range of 2-100GeV/ c and in the
rapidity range of | y | < 1. The pp (PbPb) dataset used for this
analysis corresponds to an integrated luminosity of 27.4 pb-1
(530 μb-1). The measured D0 meson pT
spectrum in pp collisions is well described by perturbative QCD
calculations. The nuclear modification factor, comparing D0
meson yields in PbPb and pp collisions, was extracted for both
minimum-bias and the 10% most central PbPb interactions. For central
events, the D0 meson yield in the PbPb collisions is
suppressed by a factor of 5-6 compared to the pp reference in the
pT range of 6-10GeV/ c. For D0 mesons in the
high-pT range of 60-100GeV/ c, a significantly smaller
suppression is observed. The results are also compared to theoretical
calculations.