POLE-DOMINANCE MODEL AND THE TWO-GAMMA DECAY OF B AND D MESONS

H. ROUTH and V. P. GAUTAM

Theoretical Physics Department, Indian Association for the Cultivation Science, Jadavpur, Calcutta, 700032, India.

Received 18 July 1997

We give a detailed study of the two-gamma decay of some heavy pseudoscalar mesons using the pole-dominance model. The transition matrix elements of P_L to bare glueball (G⁰) are also computed, and it is found that the P_L to glueball contribution is comparable with that of P_L to p⁰. From our results, we have obtained the two-gamma decay width of D_L and an upper limit of the two-gamma decay widths of B_L and B_sL mesons.

UDC 539.126
PACS numbers 13.20 Fc, 13.25 Hw, 13.40 Hq

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