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LEPTONIC DECAYS OF VECTOR MESONS

SHASHANK BHATNAGAR

Department of Physics, Institute of Basic Sciences, Bundelkhand University, Jhansi-284128, India

Department of Physics, Mody Institute of Technology and Science (Deemed University), Lakshmangarh (Sikar), Rajasthan, India

Abdus Salam International Centre for Theoretical Physics, Trieste, Italy

Regular associate, Abdus Salam ICTP.

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https://doi.org/10.1142/S0218301305003612Cited by:6 (Source: Crossref)

Abstract

In this paper, the general structure of leptonic decay constants of vector mesons is evaluated in the framework of the Bethe–Salpeter equation under the Covariant Instantaneous Ansatz (CIA), which is a Lorentz-invariant generalization of Instantaneous Approximation (IA). The numerical values of f_V in this CIA framework are on the low side in comparison to recent calculations of these quantities. However, the overall asymptotic behavior of f_V is in conformity with QCD predictions.

Keywords:

PACS: 11.10.St, 12.39.Ki, 13.20.-v, 13.20.Jf

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