TY - RPRT
TI - Mesons in relativistic quark model
AB - 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.
AU - Aznauryan, I G
AU - Esajbegyan, S V
AU - Oganessyan, K A
AU - Ter-Isaakyan, N L
KW - 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
KW - MESONS
KW - QUARK MODEL
KW - SEMILEPTONIC DECAY
KW - QUARKONIUM
KW - COUPLING CONSTANTS
KW - DECAY AMPLITUDES
KW - FEYNMAN DIAGRAM
KW - FORM FACTORS
KW - MEV RANGE 100-1000
KW - PARTICLE DECAY
KW - PARTICLE RADII
KW - PARTICLE WIDTHS
KW - RADIATIVE DECAY
KW - THEORETICAL DATA
KW - 662240
KW - MODELS FOR STRONG INTERACTIONS
DO -
UR -
PB -
CY - USSR
PY - 1989
DA - 1990-12-31
LA - English
J2 -
C1 - Erevanskij Fizicheskij Inst., Erevan (Armenia)
C2 -
ER -