Relativistic corrections to prompt J/ψ photo- and hadroproduction

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Erscheinungsjahr:
2014
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  • We systematically calculate the relativistic corrections to prompt J/ψ photoproduction and hadroproduction using the factorization formalism of nonrelativistic QCD. Specifically, we include the S31[1] and P3J[1] color-singlet and the S31[8], S10[8], and P3J[8] color-octet channels as well as the effects due to the mixing between the S31[8] and D31[8] channels. We provide all the squared hard-scattering amplitudes in analytic form. Assuming the nonrelativistic-QCD long-distance matrix elements to satisfy the velocity scaling rules, we find the relativistic corrections to be appreciable, except in the S31[1] color-singlet channel of hadroproduction. We also observe significant differences in the line shapes of the relativistic corrections between photoproduction and hadroproduction. © 2014 American Physical Society.
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  • info:eu-repo/semantics/restrictedAccess
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Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/7eafcdfe-a8db-4524-9c18-c47484ca6eed