Measurements of KS0-KL0 asymmetries in the decays Λc+→pKL,S0,pKL,S0π+π− and pKL,S0π0

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 BΛ_c⁺→pK_L⁰ = (1.67 ± 0.06 ± 0.04)%, BΛ_c⁺→pK_L⁰π⁺π⁻ = (1.69 ± 0.10 ± 0.05)%, and BΛ_c⁺→pK_L⁰π⁰ = (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⁺→pK_S⁰, Λ_c⁺→pK_S⁰π⁺π⁻, and Λ_c⁺→pK_S⁰π⁰, we present the first measurements of the K_S⁰-K_L⁰ asymmetries RΛ_c⁺K_S,L⁰X=BΛ_c⁺→K_S⁰X−BΛ_c⁺→K_L⁰XBΛ_c⁺→K_S⁰X+BΛ_c⁺→K_L⁰X in charmed baryon decays: RΛ_c⁺pK_S,L⁰=−0.025±0.031, RΛ_c⁺pK_S,L⁰π⁺π⁻=−0.027±0.048 and RΛ_c⁺pK_S,L⁰π⁰=−0.015±0.046. No significant asymmetries with statistical significance are observed.