A Study of Excited Charm-Strange Baryons withEvidence for new Baryons Xi_c(3055)+ and Xi_c(3123)+
We present a study of excited charm-strange baryon states produced in e{sup +}e{sup -} annihilations at or near a center-of-mass energy of 10.58 GeV, in a data sample with an integrated luminosity of 384 fb{sup -1} recorded with the BABAR detector at the PEP-II e+e storage rings at the Stanford Linear Accelerator Center. We study strong decays of charm-strange baryons to {Lambda}{sub c}{sup +}K{sub S}{sup 0}, {Lambda}{sub c}{sup +}K{sup -}, {Lambda}{sub c}{sup +}K{sup -}{pi}{sup +}, {Lambda}{sub c}{sup +}K{sub S}{sup 0}{pi}{sup -}, {Lambda}{sub c}{sup +}K{sub S}{sup 0}{pi}{sup -}{pi}{sup +}, {Lambda}{sub c}{sup +}K{sup -}{pi}{sup -}{pi}{sup +}. This study confirms the existence of the states {Xi}{sub c}(2980){sup +}, {Xi}{sub c}(3077){sup +}, and {Xi}{sub c}(3077){sup -}, with a more accurate determination of the {Xi}{sub c}(2980){sup +} mass and width. We also present evidence for two new states, {Xi}{sub c}(3055){sup +} and {Xi}{sub c}(3123){sup +}, decaying through the intermediate resonant modes {Sigma}{sub c}(2455){sup ++}K{sup -} and {Sigma}{sub c}(2520){sup ++}K{sup -}, respectively. For each of these baryons, we measure the yield in each final state, determine the statistical significance, and calculate the product of the production cross-section and branching fractions. We also measure the masses and widths of these excited charm-strange baryons.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 918962
- Report Number(s):
- SLAC-PUB-12935; PRVDAQ; arXiv:0710.5763; TRN: US0806268
- Journal Information:
- Physical Review D, Vol. 77; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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