Production of χc- and χb-mesons in high energy hadronic collisions

A. K. Likhoded, A. V. Luchinsky, and S. V. Poslavsky
Phys. Rev. D 90, 074021 – Published 16 October 2014

Abstract

This paper is devoted to a phenomenological study of χc,b-meson production in high energy hadronic collisions in the framework of nonrelativistic QCD (NRQCD). We analyze all available experimental data on χc-meson production and extract nonperturbative NRQCD matrix elements by data fitting. It is shown that measured pT spectra of χc-mesons is mainly formed by color singlet components, while the σ(χc2)/σ(χc1) ratio depends strongly on color octet matrix elements; this ratio becomes a highly sensitive tool to study contributions of the different NRQCD expansion terms. Predictions for χb-meson production cross sections, which are obtained using NRQCD scaling rules, are also given.

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  • Received 12 May 2014

DOI:https://doi.org/10.1103/PhysRevD.90.074021

© 2014 American Physical Society

Authors & Affiliations

A. K. Likhoded*

  • Institute for High Energy Physics, 142281 Protvino, Moscow Region, Russia and Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia

A. V. Luchinsky and S. V. Poslavsky

  • Institute for High Energy Physics, 142281 Protvino, Moscow Region, Russia and Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia

  • *Anatolii.Likhoded@ihep.ru
  • Alexey.Luchinsky@ihep.ru
  • stvlpos@mail.ru

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Issue

Vol. 90, Iss. 7 — 1 October 2014

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