Singly Cabibbo suppressed decays of ${\Lambda }_c^{+}$ with SU(3) flavor symmetry

Abstract

We analyze the weak processes of anti-triplet charmed baryons decaying to octet baryons and mesons with the SU(3) flavor symmetry and topological quark diagram scheme. We study the decay branching ratios without neglecting the contributions from $\mathcal{O}(\overline{15})$ for the first time in the SU(3) flavor symmetry approach. The fitting results for the Cabibbo allowed and suppressed decays of ${\Lambda }_c^{+}$ are all consistent with the experimental data. We predict all singly Cabibbo suppressed decays. In particular, we find that $\mathcal{B}({\Lambda }_c^{+}\to p{\pi }^0)=(1.3\pm 0.7)\times 10^{-4}$, which is slightly below the current experimental upper limit of $2.7\times 10^{-4}$ and can be tested by the ongoing experiment at BESIII as well as the future one at Belle-II.

11 pages, 2 figure, revised version accepted by PLB

References in corpus (2)

• Non-leptonic two-body weak decays of ${\Lambda }_c(2286)$
• Measurement of the Absolute Branching Fraction for ${\Lambda }_c^{+}\to \Lambda {\mu }^{+}{\nu }_{\mu }$

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