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

Abstract

We study the two-body anti-triplet charmed baryon decays of Bc→BnV, with Bc=(Ξc0,−Ξc+,Λc+) and Bn(V) the baryon (vector meson) states. Based on the SU(3) flavor symmetry, we predict that B(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 find B(Λc+→Ξ0K⁎+,Σ0K⁎+,Λ0K⁎+)=(8.7±2.7,1.2±0.3,2.0±0.5)×10−3 to be compatible with the pseudoscalar counterparts. For the doubly Cabibbo-suppressed decay Ξc+→pϕ, measured for the first time, we predict its branching ratio to be (1.5±0.7)×10−4, together with B(Ξc+→pK¯⁎0,Σ+ϕ)=(7.8±2.2,1.9±0.9)×10−3. The Bc→BnV decays with B≃O(10−4−10−3) are accessible to the BESIII, BELLEII and LHCb experiments.