Two-body charmed baryon decays involving vector meson with SU(3) flavor symmetry

摘要

We study the two-body anti-triplet charmed baryon decays ofBc→BnV, withBc=(Ξc0,?Ξc+,Λc+)andBn(V)the baryon (vector meson) states. Based on theSU(3)flavor symmetry, we predict thatB(Λc+→Σ+ρ0,Λ0ρ+)=(0.61±0.46,0.74±0.34)%, in agreement with the experimental upper bounds of(1.7,6)%, respectively. We also findB(Λc+→Ξ0K?+,Σ0K?+,Λ0K?+)=(8.7±2.7,1.2±0.3,2.0±0.5)×10?3to be compatible with the pseudoscalar counterparts. For the doubly Cabibbo-suppressed decayΞc+→p?, measured for the first time, we predict its branching ratio to be(1.5±0.7)×10?4, together withB(Ξc+→pKˉ?0,Σ+?)=(7.8±2.2,1.9±0.9)×10?3. TheBc→BnVdecays withB?O(10?4?10?3)are accessible to the BESIII, BELLEII and LHCb experiments.