Leading twist distribution amplitudes of P-wave nonrelativistic mesons

Journal Article · Wed Apr 01 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.074004· OSTI ID:21308158

Braguta, V V; Likhoded, A K; Luchinsky, A V ^[1]

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1. Institute for High Energy Physics, Protvino (Russian Federation)

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 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, relations are found 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 {approx}30%.

• OSTI ID: 21308158
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 7; Other Information: DOI: 10.1103/PhysRevD.79.074004; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
APPROXIMATIONS
CHARMONIUM
CORRECTIONS
DISTRIBUTION
MATRIX ELEMENTS
MESONS
P WAVES
QUANTUM CHROMODYNAMICS
QUARK-ANTIQUARK INTERACTIONS
RELATIVISTIC RANGE
SIMULATION
SUM RULES
VELOCITY