TY - JOUR
T1 - Measurement of the Absolute Branching Fraction of the Inclusive Decay Λ+c→Λ+X
AU - BESIII Collaboration
AU - Haddadi, Zahra
AU - Kalantar-Nayestanaki, Nasser
AU - Kavatsyuk, Myroslav
AU - Messchendorp, Johannes
AU - Tiemens, Marcel
PY - 2018/8/7
Y1 - 2018/8/7
N2 - Based on an e+e− collision data sample corresponding to an integrated luminosity of 567 pb−1 taken at the center-of-mass energy of √s=4.6 GeV with the BESIII detector, we measure the absolute branching fraction of the inclusive decay Λ+c→Λ+X to be B(Λ+c→Λ+X)=(38.2+2.8−2.2±0.9)% using the double-tag method, where X refers to any possible final state particles. In addition, we search for direct CP violation in the charge asymmetry of this inclusive decay for the first time, and obtain ACP≡[B(Λ+c→Λ+X)−B(¯Λ−c→¯Λ+X)]/[B(Λ+c→Λ+X)+B(¯Λ−c→¯Λ+X)]=(2.1+7.0−6.6±1.6)%, a statistically limited result with no evidence of CP violation.
AB - Based on an e+e− collision data sample corresponding to an integrated luminosity of 567 pb−1 taken at the center-of-mass energy of √s=4.6 GeV with the BESIII detector, we measure the absolute branching fraction of the inclusive decay Λ+c→Λ+X to be B(Λ+c→Λ+X)=(38.2+2.8−2.2±0.9)% using the double-tag method, where X refers to any possible final state particles. In addition, we search for direct CP violation in the charge asymmetry of this inclusive decay for the first time, and obtain ACP≡[B(Λ+c→Λ+X)−B(¯Λ−c→¯Λ+X)]/[B(Λ+c→Λ+X)+B(¯Λ−c→¯Λ+X)]=(2.1+7.0−6.6±1.6)%, a statistically limited result with no evidence of CP violation.
U2 - 10.1103/PhysRevLett.121.062003
DO - 10.1103/PhysRevLett.121.062003
M3 - Article
SN - 0031-9007
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
ER -