The Radiative Charmed Baryon Decay $Ξ_{c2}^{0*} \to Ξ_{c1}^0 γ$

Details The Radiative Charmed Baryon Decay $Ξ_{c2}^{0*} \to Ξ_{c1}^0 γ$ The Radiative Charmed Baryon Decay $Ξ_{c2}^{0*} \to Ξ_{c1}^0 γ$

1995-10-31

arxiv.org/abs/hep-ph/9510448v2

Phys.Lett. B369 (1996) 337-340

Physics

High Energy Physics

High Energy Physics - Phenomenology

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Scientific paper

V-spin symmetry ($s \leftrightarrow d$ symmetry) forbids the radiative decay $\Xi_{c2}^{0*} \rightarrow \Xi_{c1}^0 \gamma$ in the SU(3) limit. The quark mass term breaks V-spin symmetry and the leading nonanalytic contribution to the radiative decay amplitude is computable in heavy baryon chiral perturbation theory. The radiative decay branching ratio is determined by the coupling constant $g_2$ and at leading order in chiral perturbation theory is given by $Br(\Xi_{c2}^{0*} \rightarrow \Xi_{c1}^0 \gamma) = 1.0\times 10^{-3} g_2^2$. Measurement of this branching fraction will determine $|g_2|$.

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