English

Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules

High Energy Physics - Phenomenology 2017-05-24 v2 High Energy Physics - Experiment High Energy Physics - Lattice

Abstract

We study decay properties of the PP-wave charmed baryons using the method of light-cone QCD sum rules, including the SS-wave decays of the flavor 3ˉF\mathbf{\bar 3}_F PP-wave charmed baryons into ground-state charmed baryons accompanied by a pseudoscalar meson (π\pi or KK) or a vector meson (ρ\rho or KK^*), and the SS-wave decays of the flavor 6F\mathbf{6}_F PP-wave charmed baryons into ground-state charmed baryons accompanied by a pseudoscalar meson (π\pi or KK). We study both two-body and three-body decays which are kinematically allowed. We find two mixing solutions from internal ρ\rho- and λ\lambda-mode excitations, which can well describe both masses and decay properties of the Λc(2595)\Lambda_c(2595), Λc(2625)\Lambda_c(2625), Ξc(2790)\Xi_c(2790) and Ξc(2815)\Xi_c(2815). We also discuss the possible interpretations of PP-wave charmed baryons for the Σc(2800)\Sigma_c(2800), Ξc(2930)\Xi_c(2930), Ξc(2980)\Xi_c(2980), and the recently observed Ωc(3000)\Omega_c(3000), Ωc(3050)\Omega_c(3050), Ωc(3066)\Omega_c(3066), Ωc(3090)\Omega_c(3090), and Ωc(3119)\Omega_c(3119).

Keywords

Cite

@article{arxiv.1703.07703,
  title  = {Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules},
  author = {Hua-Xing Chen and Qiang Mao and Wei Chen and Atsushi Hosaka and Xiang Liu and Shi-Lin Zhu},
  journal= {arXiv preprint arXiv:1703.07703},
  year   = {2017}
}

Comments

44 pages, 9 figures. Version appears in Phys. Rev. D