Measurement of D , D + , D ∗ + and Ds+ produktion in pp collisions at √s=5.02TeV with ALICE

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S. Acharya, D. Adamova, S Adhya, A. Adler, J Adolfsson, MM. Aggarwal, G. Aglieri Rinella, A. Agnello, Z. Ahammed, Shafqat Ahmad, S.U. Ahn, A. Akindinov, M. Al-Turany, SN Alam, DSD Albuquerque, D. Aleksandrov, B Alessandro, H.M. Alfanda, Alfaro-Molina, B. Ali & 23 others Y. Ali, A. Alici, A. Alkin, J. Alme, T. Alt, L. Altenkamper, I. Altsybeev, MN Anaam, Ian Bearden, rtc312 rtc312, You Zhou, Jens Jørgen Gaardhøje, Ante Bilandzic, Christian Alexander Bourjau, Marek Chojnacki, Lais Ozelin De Lima Pimentel, Katarina Gajdosova, bsm989 bsm989, Freja Thoresen, Christian Bourjau, Børge Svane Nielsen, Vojtech Pacik, ALICE Collaboration

The measurements of the production of prompt D , D + , D ∗ + , and Ds+ mesons in proton–proton (pp) collisions at s=5.02TeV with the ALICE detector at the Large Hadron Collider (LHC) are reported. D mesons were reconstructed at mid-rapidity (| y| < 0.5) via their hadronic decay channels D → K - π + , D + → K - π + π + , D ∗ + → D π + → K - π + π + , Ds+→ϕπ+→K+K-π+, and their charge conjugates. The production cross sections were measured in the transverse momentum interval 0+ and D ∗ + , and in 2T bins with respect to the previous measurements at s=7TeV was performed, allowing for a more detailed description of the cross-section p T shape. The measured p T -differential production cross sections are compared to the results at s=7 TeV and to four different perturbative QCD calculations. Its rapidity dependence is also tested combining the ALICE and LHCb measurements in pp collisions at s=5.02TeV. This measurement will allow for a more accurate determination of the nuclear modification factor in p–Pb and Pb–Pb collisions performed at the same nucleon–nucleon centre-of-mass energy.

Original languageEnglish
Article number388
JournalEuropean Physical Journal C
Issue number5
Number of pages25
Publication statusPublished - 6 May 2019

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