Singly Cabibbo suppressed decays of Λc+ with SU(3) flavor symmetry

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 O(15‾) for the first time in the SU(3) flavor symmetry...

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Published in:Physics letters. B 2019-03, Vol.790, p.225-228
Main Authors: Geng, Chao-Qiang, Liu, Chia-Wei, Tsai, Tien-Hsueh
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description 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 O(15‾) for the first time in the SU(3) flavor symmetry approach. The fitting results for the Cabibbo allowed and suppressed decays of Λc+ are all consistent with the experimental data. We predict all singly Cabibbo suppressed decays. In particular, we find that B(Λc+→pπ0)=(1.3±0.7)×10−4, which is slightly below the current experimental upper limit of 2.7×10−4 and can be tested by the ongoing experiment at BESIII as well as the future one at Belle-II.
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title Singly Cabibbo suppressed decays of Λc+ with SU(3) flavor symmetry
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