Decay ηb→J/ψJ/ψ in light cone formalism

Braguta, V. V. and Kartvelishvili, Vakhtang (2010) Decay ηb→J/ψJ/ψ in light cone formalism. Physical Review D – Particles and Fields, 81 (1). ISSN 1550-2368

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Abstract

The decays of pseudoscalar bottomonium ηb into a pair of vector charmonia, J/ψJ/ψ, J/ψψ′, ψ′ψ′, are considered in the light cone formalism. Relativistic and leading logarithmic radiative corrections to the amplitudes of these processes are resummed. It is shown that the small value for the branching ratio of the decay ηb→J/ψJ/ψ obtained within the leading-order nonrelativistic QCD is a consequence of a fine-tuning between certain parameters, which is broken when relativistic and leading logarithmic radiative corrections are taken into account. As a result, the branching ratio obtained in this paper is enhanced by an order of magnitude.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D – Particles and Fields
Additional Information:
© 2010 The American Physical Society
ID Code:
56746
Deposited By:
Deposited On:
15 Aug 2012 15:16
Refereed?:
Yes
Published?:
Published
Last Modified:
09 Jul 2020 02:44