Quarkonium momentum distributions in photoproduction and B decay

Abstract

According to our present understanding many $J/\psi$ production processes proceed through a coloured $c\bar{c}$ state followed by the emission of soft particles in the quarkonium rest frame. The kinematic effect of soft particle emission is usually a higher-order effect in the non-relativistic expansion, but becomes important near the kinematic endpoint of quarkonium energy (momentum) distributions. In an intermediate region a systematic resummation of the non-relativistic expansion leads to the introduction of so-called `shape functions'. In this paper we provide an implementation of the kinematic effect of soft gluon emission which is consistent with the non-relativistic shape function formalism in the region where it is applicable and which models the extreme endpoint region. We then apply the model to photoproduction of $J/\psi$ and $J/\psi$ production in $B$ meson decay. A satisfactory description of $B$ decay data is obtained. For inelastic charmonium photoproduction we conclude that a sensible comparison of theory with data requires a transverse momentum cut larger than the currently used 1 GeV.

latex, 45 pages; (v2) some typos corrected, version to appear in PRD

References in corpus (7)

• Asymptotic expansion of Feynman integrals near threshold
• QCD analysis of inclusive B decay into charmonium
• J/psi production at the Tevatron and HERA: the effect of k_T smearing
• J/psi Production at LEP: Revisited and Resummed
• The Soft Gluon Emission Process in the Color-Octet Model for Heavy Quarkonium Production
• Quarkonium Production through Hard Comover Scattering
• Phenomenological Profiles of the Inclusive Hadron Spectra in the Decay $B\to X_s{\ell }^{+}{\ell }^{-}$

Cited by in corpus (46)

• Effective field theories for heavy quarkonium
• Measurement of $J/\psi$ helicity distributions in inelastic photoproduction at HERA
• Quarkonium Production at High-Energy Colliders
• Theory of hard photoproduction
• Resumming the color-octet contribution to e+ e- -> J/psi + X
• Resummation of Large Endpoint Corrections to Color-Octet J/psi Photoproduction
• Study of Inclusive Production of Charmonium Mesons in B Decay
• A Phenomenological Analysis of Gluon Mass Effects in Inclusive Radiative Decays of the $J/\psi$ and $Υ
• B -> chi_cJ K decays revisited
• On the Applicability of Weak-Coupling Results in High Density QCD
• Transverse momentum distribution of Upsilon production in hadronic collisions
• Four-Quark Mesons in Non-leptonic B Decays--Could They Resolve Some Old Puzzles?
• Color-singlet relativistic correction to inclusive $J/\psi$ production associated with light hadrons at $B$ factories
• Observation of B- -> J/psi Lambda pbar and searches for B- -> J/psi Sigma0 pbar and B0 -> J/psi p pbar Decays
• Measurement of inelastic J/psi production in deep inelastic scattering at HERA
• New factorization theory for heavy quarkonium production and decay
• Soft, collinear and non-relativistic modes in radiative decays of very heavy quarkonium
• Measurement of Inclusive B --> psi Production
• Long distance effects in inclusive rare $B$ decays and phenomenology of $\bar{B}\to X_d{\ell }^{+}{\ell }^{-}$
• Inclusive $h_c$ production at $B$ factories
• Polarized J/psi production in deep inelastic scattering at HERA
• Study of charmonium production in $b$-hadron decays and first evidence for the decay $B_s^0\to \varphi \varphi \varphi$
• Evidence for B+ --> Jpsi p Lambda-bar and Search for B0 --> Jpsi p p-bar
• Measurement of branching fractions for B \to J/ψηK decays and search for a narrow resonance in the J/ψηfinal state
• ${\chi }_{cJ}\to e^{+}{e}^{-}$ decays revisited
• ${\alpha }_s{v}^2$ corrections to ${\eta }_c$ and ${\chi }_{cJ}$ production recoiled with a photon at $e^{+}{e}^{-}$ colliders
• The Rare Radiative Annihilation Decays ${\bar{B}}_{s,d}^0\to J/\psi \gamma$
• Kinematic Effects in Radiative Quarkonia Decays
• Non-perturbative effects in semi-leptonic B_c decays
• High Energy Photoproduction
• Search for B -> J/psi D Decays
• Colour rearrangements in B-meson decays
• Pseudoscalar heavy-quarkonium hadroproduction from nonrelativistic fragmentation at NLL/NLO${}^{+}$
• Accounting for Slow J/psi from B Decay
• Measurement of the polarizations of prompt and non-prompt J/$\psi$ and $\psi$(2S) mesons produced in pp collisions at $\sqrt{s}$ = 13 TeV
• Polarized J/psi production from B mesons at the Tevatron
• Search for B0 -> J/psi D0bar and B+ -> J/psi D0bar pi+ decays
• Search for B^- --> J/psi Lambda p-bar decay
• The momentum distribution of J/psi in B decays
• $J/\psi$ polarization in large-$P_T$ semi-inclusive deep-inelastic scattering at the EIC
• Shape function in QED and bound muon decays
• Resummation and renormalization of kinematical effects in inclusive $P$-wave quarkonium production
• Study of charmonium production using decays to hadronic final states with the LHCb experiment
• pQCD Calculations of Heavy Quark and J/psi Production
• J/psi production in ep collisions at HERA
• Production of J/psi Mesons at HERA