Measurement of the Branching Ratio Lambda_c+ -> p pi+ pi-

Lopez-Hinojosa, Guillermo ; /San Luis Potosi U.

关键词: BARYONS;    BRANCHING RATIO;    DECAY;    FERMILAB;    TARGETS Experiment-HEP;   

DOI  :  10.2172/928099
RP-ID  :  FERMILAB-MASTERS-2008-02
PID  :  OSTI ID: 928099
Others  :  TRN: US0804195

学科分类：物理（综合）

美国|西班牙

来源: SciTech Connect

【 摘 要 】

The confirmation of the Cabibbo-suppressed charm baryon decay mode {Lambda}{sub c}{sup +} {yields} p{pi}{sup +}{pi}{sup -} is reported. All data analyzed are from SELEX, a fixed target experiment at Fermilab that took data during 1996 and 1997, mainly with a 600 GeV/c {Sigma}{sup -} beam. The branching ratio of the Cabibbo-suppressed decay mode {Lambda}{sub c}{sup +} {yields} p{pi}{sup +}{pi}{sup -} relative to the Cabibbo-favored mode {Lambda}{sub c}{sup +} {yields} pK{sup -}{pi}{sup +} is measured to be: {Gamma}({Lambda}{sub c}{sup +} {yields} p{pi}{sup +}{pi}{sup -})/{Gamma}({Lambda}{sub c}{sup +} {yields} pK{sup -}{pi}{sup +}) = 0.103 {+-} 0.022.