Inclusive J/psi and psi(2S) Production from B Decay in p p-bar Collisions

TL;DR

This paper predicts the transverse-momentum distribution of J/psi and psi(2S) mesons from B decay in p p-bar collisions using nonrelativistic QCD, fitting parameters to experimental data and finding good agreement.

Contribution

It combines B-meson fragmentation functions with nonrelativistic QCD formalism to predict charmonium production in p p-bar collisions, fitting to experimental data for validation.

Findings

Predictions agree well with CDF and D0 data.

Determined color-octet matrix elements from experimental fits.

Provides a theoretical framework for charmonium production from B decays.

Abstract

Using information on B-meson fragmentation functions from CERN LEP 1 and adopting the nonrelativistic QCD factorization formalism proposed by Bodwin, Braaten, and Lepage, we predict the transverse-momentum distribution of J/psi mesons originating from the inclusive decays of b hadrons produced in p p-bar collisions at the Fermilab Tevatron. We determine the relevant colour-octet charmonium matrix elements from fits to CDF data on prompt charmonium hadroproduction and to CLEO data on charmonium production from B-meson decay. Our predictions are found to agree well with recent CDF and D0 data.