Leading twist distribution amplitudes of P-wave nonrelativistic mesons

Abstract

This paper is devoted to the study of the leading twist distribution amplitudes of P-wave nonrelativistic mesons. It is shown that at the leading order approximation in relative velocity of quark-antiquark pair inside the mesons these distribution amplitudes can be expressed through one universal function. As an example, the distribution amplitudes of the P-wave charmonia mesons are considered. Within QCD sum rules the model for the universal function of P-wave charmonia mesons is built. In addition, it is found the relations between the moments of the universal function and the nonrelativistic QCD matrix elements that control relativistic corrections to any amplitude involving P-wave charmonia. Our calculation shows that characteristic size of these corrections is of order of ~30 %.

9 pages, minor corrections, reference updated, version to be published in Phys. Rev. D

References in corpus (7)

• Modelling light-cone distribution amplitudes from non-relativistic bound states
• The study of leading twist light cone wave function of η_c meson
• The study of leading twist light cone wave functions of J/Psi meson
• NRQCD Factorization for Twist-2 Light-Cone Wave-Functions of Charmonia
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Cited by in corpus (1)

• $B_c$ to P-Wave Charmonia Transitions in Covariant Light-Front Approach