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.

Measurements of $$ {K}_S^0 $$-$$ {K}_L^0 $$ asymmetries in the decays $$ {\Lambda}_c^{+}\to p{K}_{L,S}^0 $$, $$ p{K}_{L,S}^0{\pi}^{+}{\pi}^{-} $$ and $$ p{K}_{L,S}^0{\pi}^0 $$

Garzia, I.;Gramigna, S.;
2024

Abstract

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.
2024
Null, Null; Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2569856
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