Mesons in relativistic quark model
Aznauryan, I G; Esajbegyan, S V; Oganessyan, K A; Ter-Isaakyan, N L
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; MESONS; QUARK MODEL; SEMILEPTONIC DECAY; QUARKONIUM; COUPLING CONSTANTS; DECAY AMPLITUDES; FEYNMAN DIAGRAM; FORM FACTORS; MEV RANGE 100-1000; PARTICLE DECAY; PARTICLE RADII; PARTICLE WIDTHS; RADIATIVE DECAY; THEORETICAL DATA; 662240; MODELS FOR STRONG INTERACTIONS
In the relativistic quark model formulated in the infinite momentum frame a self-consistent description has been obtained for a pion, {omega}- and {rho}-mesons, K- and K{sup *}-mesons. The role of the relativistic effects in the description of radiative, leptonic and semileptonic decays of heavy quarkonia is studied. The relativistic effects are shown to lead to noticeable suppression of the {psi} {yields} {eta}{sub c}{gamma} decay width predicted in nonrelativistic approximation; however the discrepancy with the experimental data still remains. Predictions are obtained for amplitudes of D {yields} {mu}{nu}, D{sub s} {yields} {mu}{nu}, B {yields} {mu}{nu}, D {yields} {pi}e{nu} and D {yields} Ke{nu} decays. The relativistic effects are shown to lead to strong supperssion of coupling constants of D {yields} {mu}{nu}, D{sub s} {yields} {mu}{nu}, B {yields} {mu}{nu} decays. The prediction obtained for the coupling constant F{sub D} = 230-270 MeV is close to the boundary of available experimental restriction. 46 refs.; 2 figs.; 5 tabs.
Erevanskij Fizicheskij Inst., Erevan (Armenia)
OSTI; NTIS (US Sales Only); INIS
USSR
1990-12-31
English
Technical Report
Numerical Data
Other Information: PBD: 1989
Medium: X; Size: 32 p.
ON: DE92617034
YERPHI-1185-62-89
Other: ON: DE92617034; TRN: SU9110174017790
INIS; SCA: 662240; PA: AIX-23:017790; SN: 92000661536
2008-02-12
10118466