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Measurement of D-meson production at mid-rapidity in pp collisions at √s=7 TeV
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Measurement of D-meson production at mid-rapidity in pp collisions at √s=7 TeV

S. Acharya, D. Adamová, M.M. Aggarwal, G. Aglieri Rinella, M. Agnello, N. Agrawal, Z. Ahammed, N. Ahmad, S.U. Ahn, S. Aiola, …
European Physical Journal C, 卷.77(8), 550
08/2017

摘要

Engineering (miscellaneous) Physics and Astronomy (miscellaneous)
The production cross sections for prompt charmed mesons D 0 , D + , D ∗ + and Ds+ were measured at mid-rapidity in proton–proton collisions at a centre-of-mass energy s=7TeV with the ALICE detector at the Large Hadron Collider (LHC). D mesons were reconstructed from their decays D 0 → K - π + , D + → K - π + π + , D ∗ + → D 0 π + , Ds++→K-K+π+, and their charge conjugates.With respect to previous measurements in the same rapidity region, the coverage in transverse momentum (p T ) is extended and the uncertainties are reduced by a factor of about two. The accuracy on the estimated total c c ¯ production cross section is likewise improved. The measured p T -differential cross sections are compared with the results of three perturbative QCD calculations.

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https://doi.org/10.1140/epjc/s10052-017-5090-4檢視
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