Features of production of C-even heavy quarkonium in hadron collisions

Journal Article · Sat Dec 01 04:00:00 EST 1984 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5560599

Dokshitser, Y L; Egoryan, R S

We study the distribution in the transverse momenta q/sub perpendicular/ of P-wave states of heavy quarkonium QQ-bar with quantum numbers J/sup P/C = (0,1,2)/sup + +/ (mesons of the chi type) produced in hadron-hadron collisions. We show that in the case of production of chi as the result of the hard mechanism q+q-bar..-->..chi+g (pp-bar, ..pi..p, and K/sup -/p reactions) the nonrelativistic nature of the QQ-bar system leads to a universal spectrum (J = 0,1,2) dsigma/dq/sup 2//sub perpendicular/infinityq/sup -2//sub perpendicular/ in the region Epsilon..chi+q, g+g..-->..chi+g) correspond to qualitatively different spectra for mesons with J/sup P/C = 0/sup + +/, 2/sup + +/, and for the 1/sup + +/ meson. We discuss the influence on the distribution in q/sub perpendicular/ of higher corrections of QCD associated with the multiple emission of bremsstrahlung gl*ons.

• Research Organization: Erevan Physics Institute
• OSTI ID: 5560599
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 40:6; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645205* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 0-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
ELEMENTARY PARTICLES
ENERGY LEVELS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LINEAR MOMENTUM
MESON RESONANCES
MESON SPECTROSCOPY
MESONS
P STATES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK-ANTIQUARK INTERACTIONS
QUARKONIUM
RESONANCE PARTICLES
SPECTROSCOPY
TRANSVERSE MOMENTUM