Measurements of K0S-K0L asymmetries in the decays Λ+c → pK0L,S ,  pK0L,S  π+π− and pK0L,Sπ0

BESIII Collaboration; M. Ablikim; M. N. Achasov; P. Adlarson; O. Afedulidis; Shenghui Zeng; et al.

doi:10.1007/JHEP09(2024)007

Measurements of K⁰_S-K⁰_Lasymmetries in the decays Λ⁺_c→ pK⁰_L,S , pK⁰_L,Sπ⁺π⁻ and pK⁰_L,Sπ⁰

BESIII Collaboration
, M. Ablikim
, M. N. Achasov
, P. Adlarson
, O. Afedulidis
, Shenghui Zeng
, et al.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

2 Citations (Scopus)

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 B(Λ⁺_c→ pK₀^L) = (1.67 ± 0.06 ± 0.04)%, B(Λ⁺_c→pK⁰_Lπ⁺π⁻) = (1.69 ± 0.10 ± 0.05)%, and B(Λ⁺_c→pK⁰_Lπ⁰) = (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→pK⁰_S, Λ+c→pK⁰_Sπ⁺π⁻, and Λ⁺_c→pK⁰_Sπ⁰, we present the first measurements of the K⁰_S-K⁰_SLasymmetries R(Λ⁺_c,K⁰_S,_LX)=[B(Λ⁺_c→K⁰_SX) − B(Λ⁺_c→K⁰_LX)] / [B(Λ⁺_c→K⁰_SX) + B(Λ⁺_c→K⁰_LX)] in charmed baryon decays: R(Λ⁺_c, pK⁰_S,L) = −0.025±0.031 , R(Λ⁺_c, pK⁰_S,Lπ⁺π⁻) = −0.027±0.048 and R(Λ⁺_c, pK⁰_S,Lπ⁰)=−0.015±0.046. No significant asymmetries with statistical significance are observed.

Original language	English
Article number	7
Number of pages	20
Journal	Journal of High Energy Physics
Volume	2024
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2024)007
Publication status	Published - 3 Sept 2024

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@article{a9bf07f04d314fc29c75846e63da898c,

title = "Measurements of K0S-K0L asymmetries in the decays Λ+c → pK0L,S , pK0L,S π+π− and pK0L,Sπ0",

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 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.",

author = "\{BESIII Collaboration\} and M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and O. Afedulidis and Shenghui Zeng and et al.",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = sep,

day = "3",

doi = "10.1007/JHEP09(2024)007",

language = "English",

volume = "2024",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "9",

}

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

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 -

Measurements of K0S-K0L asymmetries in the decays Λ+c → pK0L,S , pK0L,S π+π− and pK0L,Sπ0