Study of Excited $Ξ_c$ States Decaying into $Ξ_c^0$ and $Ξ_c^+$ Baryons
hep-ex
/ Authors
Belle Collaboration, J. Yelton, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, S. Bahinipati, A. M. Bakich
and 144 more authors
E. Barberio, P. Behera, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, M. Danilov, N. Dash, S. Di Carlo, Z. Doležal, Z. Drásal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast
/ Abstract
Using a data sample of 980 ${\rm fb}^{-1}$ of $e^+e^-$ annihilation data taken with the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider, we report the results of a study of excited $Ξ_c$ states that decay, via the emission of photons and/or charged pions, into $Ξ_c^0$ or $Ξ_c^+$ ground state charmed-strange baryons. We present new measurements of the masses of all members of the $Ξ_c^{\prime}$, $Ξ_c(2645)$, $Ξ_c(2790)$, $Ξ_c(2815)$, and $Ξ_c(2980)$ isodoublets, measurements of the intrinsic widths of those that decay strongly, and evidence of previously unknown transitions.