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

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

Fermi National Accelerator Laboratory

关键词: Targets Experiment-Hep;    Decay;    72 Physics Of Elementary Particles And Fields;    Baryons;    Branching Ratio;   

DOI  :  10.2172/928099
RP-ID  :  FERMILAB-MASTERS-2008-02
RP-ID  :  AC02-07CH11359
RP-ID  :  928099

美国|其它

来源: UNT Digital Library

【 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.