ar X iv : h ep - p h / 99 01 23 8 v 2 1 7 D ec 2 00 2 PHOTOPRODUCTION OF ψ ′ AS A TEST OF COLOR – OCTET MODEL
نویسنده
چکیده
We have calculated the cross section of ψ ′ photoproduction at small–p T regions in polarized γp collisions for testing the color–octet model, which is based on NRQCD factorization formalism. We show that the measurement of the two– spin asymmetry of this process might be effective to constrain the value of NRQCD matrix elements.
منابع مشابه
ar X iv : h ep - p h / 99 01 23 8 v 1 7 J an 1 99 9 PHOTOPRODUCTION OF ψ ′ AS A TEST OF COLOR – OCTET MODEL
We have calculated the cross section of ψ ′ photoproduction at small–p T regions in polarized γp collisions for testing the color–octet model, which is based on NRQCD factorization formalism. We show that the measurement of the two– spin asymmetry of this process might be effective to constrain the value of NRQCD matrix elements.
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