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arXiv · 1309.3389

Inclusive J/psi and psi(2S) production from b-hadron decay in p anti-p and pp collisions

Paolo Bolzoni·Bernd A. Kniehl·Gustav Kramer
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Abstract

We study the inclusive production of J/psi and psi(2S) mesons originating from the decays of bottom-flavored hadrons produced in p anti-p collisions at the Fermilab Tevatron and in pp collisions at the CERN LHC. We work at next-to-leading order in the general-mass variable-flavor-number scheme (GM-VFNS) implemented with nonperturbative fragmentation functions fitted to e^+e^- data of inclusive b-hadron production exploiting their universality. The three-momentum distributions of the charmonia used were extracted from B-decay data in the framework of nonrelativistic-QCD factorization. Comparing the theoretical predictions thus obtained with transverse-momentum distributions measured by the CDF II, ALICE, ATLAS, CMS, and LHCb Collaborations, we find excellent overall agreement as for both absolute normalization and lineshape, which provides a nontrivial test of the GM-VFNS over wide ranges of center-of-mass energy, transverse momentum, and rapidity.

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Paolo Bolzoni, Bernd A. Kniehl, Gustav Kramer. 2013-10-18. Inclusive J/psi and psi(2S) production from b-hadron decay in p anti-p and pp collisions. https://doi.org/10.1103/physrevd.88.074035

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