Radiative decays of the doubly charmed baryons in chiral perturbation theory

Abstract

We have systematically investigated the spin-$\frac{3}{2}$ to spin-$\frac{1}{2}$ doubly charmed baryon transition magnetic moments to the next-to-next-to-leading order in the heavy baryon chiral perturbation theory (HBChPT). Numerical results of transition magnetic moments and decay widths are presented to the next-to-leading order: ${\mu }_{{\Xi }_{cc}^{\ast ++}\to {\Xi }_{cc}^{++}}=-2.35{\mu }_N$, ${\mu }_{{\Xi }_{cc}^{\ast +}\to {\Xi }_{cc}^{+}}=1.55{\mu }_N$, ${\mu }_{{\Omega }_{cc}^{\ast +}\to {\Omega }_{cc}^{+}}=1.54{\mu }_N$, ${\Gamma }_{{\Xi }_{cc}^{\ast ++}\to {\Xi }_{cc}^{++}}=22.0$ keV, ${\Gamma }_{{\Xi }_{cc}^{\ast +}\to {\Xi }_{cc}^{+}}=9.57$ keV, ${\Gamma }_{{\Omega }_{cc}^{\ast +}\to {\Omega }_{cc}^{+}}=9.45$ keV.

arXiv admin note: text overlap with arXiv:1707.02765, arXiv:1706.06458

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