A QCD Sum Rule Approach to the $s\to dγ$ Contribution to the $Ω^-\to Ξ^-γ$ Radiative Decay

Details A QCD Sum Rule Approach to the $s\to dγ$ Contribution to the $Ω^-\to Ξ^-γ$ Radiative Decay A QCD Sum Rule Approach to the $s\to dγ$ Contribution to the $Ω^-\to Ξ^-γ$ Radiative Decay

1995-09-14

arxiv.org/abs/hep-ph/9509297v1

Phys.Rev. D53 (1996) 3620-3628

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, Revtex, 13 figures available as a uuencoded, gz-compressed ps file

Scientific paper

10.1103/PhysRevD.53.3620

QCD sum rules are used to calculate the contribution of short-distance
single-quark transition $s\rightarrow d \gamma$, to the amplitudes of the
hyperon radiative decay, $\Omega^-\rightarrow \Xi^-\gamma$. We re-evaluate the
Wilson coefficient of the effective operator responsible for this transition.
We obtain a branching ratio which is comparable to the unitarity limit.

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