TY - JOUR
T1 - Measurements of K0S-K0L asymmetries in the decays Λ+c → pK0L,S , pK0L,S π+π− and pK0L,Sπ0
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Afedulidis, O.
AU - Zeng, Shenghui
AU - al., et
N1 - Publisher Copyright:
© The Author(s) 2024.
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 B(Λ+c → pK0L) = (1.67 ± 0.06 ± 0.04)%, B(Λ+c→pK0Lπ+π−) = (1.69 ± 0.10 ± 0.05)%, and B(Λ+c→pK0Lπ0) = (2.02 ± 0.13 ± 0.05)%, where the first uncertainties are statistical and the second systematic. Combining with the known branching fractions of Λ+c→pK0S, Λ+c→pK0Sπ+π−, and Λ+c→pK0Sπ0, we present the first measurements of the K0S-K0SL asymmetries R(Λ+c,K0S,LX)=[B(Λ+c→K0SX) − B(Λ+c→K0LX)] / [B(Λ+c→K0SX) + B(Λ+c→K0LX)] in charmed baryon decays: R(Λ+c, pK0S,L) = −0.025±0.031 , R(Λ+c, pK0S,Lπ+π−) = −0.027±0.048 and R(Λ+c, pK0S,Lπ0)=−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 B(Λ+c → pK0L) = (1.67 ± 0.06 ± 0.04)%, B(Λ+c→pK0Lπ+π−) = (1.69 ± 0.10 ± 0.05)%, and B(Λ+c→pK0Lπ0) = (2.02 ± 0.13 ± 0.05)%, where the first uncertainties are statistical and the second systematic. Combining with the known branching fractions of Λ+c→pK0S, Λ+c→pK0Sπ+π−, and Λ+c→pK0Sπ0, we present the first measurements of the K0S-K0SL asymmetries R(Λ+c,K0S,LX)=[B(Λ+c→K0SX) − B(Λ+c→K0LX)] / [B(Λ+c→K0SX) + B(Λ+c→K0LX)] in charmed baryon decays: R(Λ+c, pK0S,L) = −0.025±0.031 , R(Λ+c, pK0S,Lπ+π−) = −0.027±0.048 and R(Λ+c, pK0S,Lπ0)=−0.015±0.046. No significant asymmetries with statistical significance are observed.
U2 - 10.1007/JHEP09(2024)007
DO - 10.1007/JHEP09(2024)007
M3 - Article (Academic Journal)
SN - 1029-8479
VL - 2024
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 9
M1 - 7
ER -