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<36GeV/c for D , 1<36GeV/c for D + and D ∗ + , and in 2<24GeV/c for Ds+ mesons. Thanks to the higher integrated luminosity, an analysis in finer p T 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.

Acharya S., Adamova D., Adhya S.P., Adler A., Adolfsson J., Aggarwal M.M., et al. (2019). Measurement of D0, D+, D∗+ and D+s production in pp collisions at √s = 5.02 TeV with ALICE. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(5), 1-25 [10.1140/epjc/s10052-019-6873-6].

Measurement of D0, D+, D∗+ and D+s production in pp collisions at √s = 5.02 TeV with ALICE

Alici A.;Arcelli S.;Bellini F.;Carnesecchi F.;Cifarelli L.;Colocci M.;Jacazio N.;Scioli G.;
2019

Abstract

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<36GeV/c for D , 1<36GeV/c for D + and D ∗ + , and in 2<24GeV/c for Ds+ mesons. Thanks to the higher integrated luminosity, an analysis in finer p T 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.
2019
Acharya S., Adamova D., Adhya S.P., Adler A., Adolfsson J., Aggarwal M.M., et al. (2019). Measurement of D0, D+, D∗+ and D+s production in pp collisions at √s = 5.02 TeV with ALICE. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 79(5), 1-25 [10.1140/epjc/s10052-019-6873-6].
Acharya S.; Adamova D.; Adhya S.P.; Adler A.; Adolfsson J.; Aggarwal M.M.; Aglieri Rinella G.; Agnello M.; Ahammed Z.; Ahmad S.; Ahn S.U.; Aiola S.; A...espandi
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