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Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV

Journal articles  - Journal Article
Sirunyan, AM; Tumasyan, A; Adam, W; Ambrogi, F; Asilar, E; Bergauer, T; Brandstetter, J; Brondolin, E; Dragicevic, M; Erö, J; Flechl, M ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
July 10, 2018

The transverse momentum (pT) spectrum of prompt D0 mesons and their antiparticles has been measured via the hadronic decay channels D0→Kπ+ 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.

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Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

July 10, 2018

Volume

782

Start / End Page

474 / 496

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
 

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Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., … Caputo, C. (2018). Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 782, 474–496. https://doi.org/10.1016/j.physletb.2018.05.074
Sirunyan, A. M., A. Tumasyan, W. Adam, F. Ambrogi, E. Asilar, T. Bergauer, J. Brandstetter, et al. “Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 782 (July 10, 2018): 474–96. https://doi.org/10.1016/j.physletb.2018.05.074.
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Asilar E, Bergauer T, et al. Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2018 Jul 10;782:474–96.
Sirunyan, A. M., et al. “Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 782, July 2018, pp. 474–96. Scopus, doi:10.1016/j.physletb.2018.05.074.
Sirunyan AM, 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 VM, 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 CE, Zarucki M, Chekhovsky V, Mossolov V, Suarez Gonzalez J, De Wolf EA, 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. Nuclear modification factor of D0 mesons in PbPb collisions at sNN=5.02TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2018 Jul 10;782:474–496.
Journal cover image

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

July 10, 2018

Volume

782

Start / End Page

474 / 496

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences