TY - JOUR
T1 - Measurements of KS0-KL0 asymmetries in the decays Λc+→pKL,S0,pKL,S0π+π− and pKL,S0π0
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Afedulidis, O.
AU - Ai, X. C.
AU - Aliberti, R.
AU - Amoroso, A.
AU - Kalantar-Nayestanaki, N.
AU - Kavatsyuk, M.
AU - Messchendorp, J.
PY - 2024/9/3
Y1 - 2024/9/3
N2 - Using e+e− annihilation data sets corresponding to an integrated luminosity of 4.5 fb−1, collected with the BESIII detector at center-of-mass energies between 4.600 and 4.699 GeV, we report the first measurements of the absolute branching fractions BΛc+→pKL0 = (1.67 ± 0.06 ± 0.04)%, BΛc+→pKL0π+π− = (1.69 ± 0.10 ± 0.05)%, and BΛc+→pKL0π0 = (2.02 ± 0.13 ± 0.05)%, where the first uncertainties are statistical and the second systematic. Combining with the known branching fractions of Λc+→pKS0, Λc+→pKS0π+π−, and Λc+→pKS0π0, we present the first measurements of the KS0-KL0 asymmetries RΛc+KS,L0X=BΛc+→KS0X−BΛc+→KL0XBΛc+→KS0X+BΛc+→KL0X in charmed baryon decays: RΛc+pKS,L0=−0.025±0.031, RΛc+pKS,L0π+π−=−0.027±0.048 and RΛc+pKS,L0π0=−0.015±0.046. No significant asymmetries with statistical significance are observed.
AB - Using e+e− annihilation data sets corresponding to an integrated luminosity of 4.5 fb−1, collected with the BESIII detector at center-of-mass energies between 4.600 and 4.699 GeV, we report the first measurements of the absolute branching fractions BΛc+→pKL0 = (1.67 ± 0.06 ± 0.04)%, BΛc+→pKL0π+π− = (1.69 ± 0.10 ± 0.05)%, and BΛc+→pKL0π0 = (2.02 ± 0.13 ± 0.05)%, where the first uncertainties are statistical and the second systematic. Combining with the known branching fractions of Λc+→pKS0, Λc+→pKS0π+π−, and Λc+→pKS0π0, we present the first measurements of the KS0-KL0 asymmetries RΛc+KS,L0X=BΛc+→KS0X−BΛc+→KL0XBΛc+→KS0X+BΛc+→KL0X in charmed baryon decays: RΛc+pKS,L0=−0.025±0.031, RΛc+pKS,L0π+π−=−0.027±0.048 and RΛc+pKS,L0π0=−0.015±0.046. No significant asymmetries with statistical significance are observed.
KW - Charm Physics
KW - e -e Experiments
KW - Electroweak Interaction
KW - Flavour Physics
UR - https://www.scopus.com/pages/publications/85203296270
U2 - 10.1007/JHEP09(2024)007
DO - 10.1007/JHEP09(2024)007
M3 - Article
SN - 1126-6708
VL - 2024
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 9
ER -