Production of ${\chi }_c$- and ${\chi }_b$-mesons in high energy hadronic collisions

Abstract

This paper is devoted to phenomenological study of ${\chi }_{c,b}$-mesons production in high energy hadronic collisions in the framework of NRQCD. We analyze all available experimental data on ${\chi }_c$-mesons production and extract non-perturbative NRQCD matrix elements from fitting the data. We show, that measured $p_T$-spectrum of ${\chi }_c$-mesons is mainly formed by color singlet components, while $\sigma ({\chi }_{c2})/\sigma ({\chi }_{c1})$ ratio depends strongly on color octet matrix elements; this ratio becomes a highly sensitive tool to study contribution of different terms from the NRQCD expansion. Obtained using NRQCD scaling rules predictions for ${\chi }_b$-mesons cross sections are also given.

10 pages, 7 figures

References in corpus (5)

• Measurement of the relative prompt production rate of chi(c2) and chi(c1) in pp collisions at sqrt(s) = 7 TeV
• Production of ${\chi }_b$-mesons at LHC
• Leading twist distribution amplitudes of P-wave nonrelativistic mesons
• Helicity Amplitudes for Charmonium Production in Hadron-Hadron and Photon-Hadron Collisions
• Study of exclusive processes e^+ e^- \to VP

Cited by in corpus (5)

• Production of $J/\psi +{\chi }_c$ and $J/\psi +J/\psi$ with real gluon emission at LHC
• Measurement of the production cross section ratio sigma(chi[b2](1P)) / sigma(chi[b1](1P)) in pp collisions at sqrt(s) = 8 TeV
• Next-to-leading order QCD corrections to paired $B_c$ production in $e^{+}{e}^{-}$ annihilation
• Simultaneous production of charmonium and bottomonium mesons at LHC
• Production of ${\eta }_Q$ meson at LHC