Measurements of Lambda{sub c}{sup +} Branching Fractions of Cabibbo-Suppressed Decay Modes.

Technical Report · Tue Aug 10 04:00:00 EDT 2004

DOI:https://doi.org/10.2172/829745· OSTI ID:829745

Saleem, Muhammad ^[1]

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1. SLAC

The authors have measured the branching fractions of the Cabibbo-suppressed decays {Lambda}{sub c}{sup +} --> {Lambda}{sup 0}K{sup +} and {Lambda}{sub c}{sup +} --> {Sigma}{sup 0}K{sup +} relative to the Cabibbo-allowed decay modes {Lambda}{sub c}{sup +} --> {Lambda}{sup 0}{pi}{sup +} and {Lambda}{sub c}{sup +} --> {Sigma}{sup 0}{pi}{sup +} to be 0.044 {+-} 0.004 (stat.) {+-} 0.002 (syst.) and 0.040 {+-} 0.005 (stat.) {+-} 0.004 (syst.), respectively. They also present the first observation of {Lambda}{sub c}{sup +} --> {Lambda}{sup 0}K{sup +}{pi}{sup +}{pi}{sup -} and have measured the branching fraction relative to {Lambda}{sub c}{sup +} --> {Lambda}{sup 0}{pi}{sup +} to be 0.266 {+-} 0.027 (stat.) {+-} 0.032 (syst.). The upper limit of the branching fraction into the decay {Lambda}{sub c}{sup +} --> {Sigma}{sup 0}K{sup +}{pi}{sup +}{pi}{sup -} relative to {Lambda}{sub c}{sup +} --> {Sigma}{sup 0}{pi}{sup +} has been measured to be < 3.9 x 10{sup -2} at the 90% confidence level. This analysis was performed using a data sample of 125 fb{sup -1} (integrated luminosity) collected by the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. All results presented in this contribution are preliminary.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 829745
• Report Number(s): SLAC-PUB-10593
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ASYMMETRY
DECAY
LUMINOSITY
STANFORD LINEAR ACCELERATOR CENTER