Relativistic Corrections for Plarized J/Ψ-Production in b-quark decay

Abstract

We analyse the structure of relativistic corrections in the inclusive production of polarized $J/\Psi$ from b-quark decay. The analysis is performed not only for the production channel in which the $c\bar{c}$ pair is a color sinlet, but also for the channels in which the $c\bar{c}$ is a color octet. We find that the correction in the color-singlet channel at the tree-level is completely determined by the decay constant of $J/\Psi$, while in the color-octet channels the corrections are characterized by three matrix elements defined in NRQCD, whose numerical values are unknown. We discuss the impact of these corrections on the polarized $J/\Psi$% -production, and the impact is so significant that the predictions based on the analysis for the considered process may be unreliable. Finally, we propose an integrated spin observable to measure the polarization of $J/\Psi$%

One Ref. added, representation improved, results unchanged

References in corpus (1)

• QCD analysis of inclusive B decay into charmonium

Cited by in corpus (8)

• Predictions for $e^{+}{e}^{-}\to J/\psi {\eta }_c$ with Light-Cone Wave-Functions
• Study of Inclusive Production of Charmonium Mesons in B Decay
• Relativistic Correction to Color Octet J/psi Production at Hadron Colliders
• Measurement of Inclusive B --> psi Production
• Relativistic effects in the processes of heavy quark fragmentation
• Spin-Flip Interactions and the Puzzle of psi's Polarization at Tevatron
• Diffractive D_s production in charged current DIS
• Soft Gluon Approach for Diffractive Photoproduction of J/psi