Search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe

The BESIII collaboration

doi:10.1016/j.physletb.2023.137993

Search for the semi-leptonic decays Λ_c⁺→Λπ⁺π⁻e⁺ν_e and Λ_c⁺→pK_S⁰π⁻e⁺ν_e

The BESIII collaboration

Institute of Higher Research

CAS - Institute of High Energy Physics
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Uppsala University
Johannes Gutenberg University Mainz
Chinese Academy of Sciences
University of Turin
National Institute for Nuclear Physics
Liaoning Normal University
University of Science and Technology of China
Southeast University, Nanjing
Joint Institute for Nuclear Research
Peking University
National Centre for Nuclear Research
Mongolian Academy of Sciences
University of Münster
Carnegie Mellon University
Wuhan University
University of Chinese Academy of Sciences
Turkish Accelerator Center Particle Factory Group
Istinye University
Xinyang Normal University
Nankai University
Soochow University
Nanjing University
Tsinghua University
CAS - Institute of Modern Physics
Jilin University
Hunan University
Chung-Ang University
Ruhr University Bochum
Shandong University
Yunnan University
Helmholtz Institute Mainz
University of Jinan
Liaoning University
Zhengzhou University
University of Eastern Piedmont
Sun Yat-Sen University
University of Oxford
University of Ferrara
University of Manchester
GSI Helmholtz Centre for Heavy Ion Research
Guangxi University
Henan University of Technology
Nanjing Normal University
Shandong Normal University
Fudan University
Henan Normal University
University of Hawai'i at Mānoa
Suranaree University of Technology
South China Normal University
University of the Punjab
Indiana University Bloomington
Hangzhou Normal University
Huangshan College
University of Groningen
China University of Geosciences, Wuhan
Justus Liebig University Giessen
Indian Institute of Technology Madras
Qufu Normal University
Beijing Institute of Petrochemical Technology
Lanzhou University
Sichuan University
Guangxi Normal University
Shanxi University
Central China Normal University
Henan University of Science and Technology
University of South China
Central South University
Zhejiang University
COMSATS University Islamabad
University of Perugia
Universidad de Tarapacá
Hunan Normal University
Shanxi Normal University
Near East University
North China Electric Power University
Hebei University
University of Science and Technology Liaoning
Yantai University
Shanghai Jiao Tong University
China Center of Advanced Science and Technology World Laboratory
Beihang University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We search for the semi-leptonic decays Λ_c⁺→Λπ⁺π⁻e⁺ν_e and Λ_c⁺→pK_S⁰π⁻e⁺ν_e in a sample of 4.5 fb⁻¹ of e⁺e⁻ annihilation data collected in the center-of-mass energy region between 4.600 GeV and 4.699 GeV by the BESIII detector at the BEPCII. No significant signals are observed, and the upper limits on the decay branching fractions are set to be B(Λ_c⁺→Λπ⁺π⁻e⁺ν_e)<3.9×10⁻⁴ and B(Λ_c⁺→pK_S⁰π⁻e⁺ν_e)<3.3×10⁻⁴ at the 90% confidence level, respectively.

Original language	English
Article number	137993
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	843
DOIs	https://doi.org/10.1016/j.physletb.2023.137993
State	Published - 10 Aug 2023

Keywords

BESIII
Branching fractions
Semi-leptonic decays
Λ baryon

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10.1016/j.physletb.2023.137993

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@article{5fff53e5dff24b4b821919bd4308c6bc,

title = "Search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe",

abstract = "We search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe in a sample of 4.5 fb−1 of e+e− annihilation data collected in the center-of-mass energy region between 4.600 GeV and 4.699 GeV by the BESIII detector at the BEPCII. No significant signals are observed, and the upper limits on the decay branching fractions are set to be B(Λc+→Λπ+π−e+νe)<3.9{\texttimes}10−4 and B(Λc+→pKS0π−e+νe)<3.3{\texttimes}10−4 at the 90\% confidence level, respectively.",

keywords = "BESIII, Branching fractions, Semi-leptonic decays, Λ baryon",

author = "M. Ablikim and Achasov, \{M. N.\} and P. Adlarson and R. Aliberti and S. Kabana and \{The BESIII collaboration\}",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s)",

year = "2023",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2023.137993",

language = "English",

volume = "843",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

}

TY - JOUR

T1 - Search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Aliberti, R.

AU - Kabana, S.

AU - The BESIII collaboration

PY - 2023/8/10

Y1 - 2023/8/10

N2 - We search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe in a sample of 4.5 fb−1 of e+e− annihilation data collected in the center-of-mass energy region between 4.600 GeV and 4.699 GeV by the BESIII detector at the BEPCII. No significant signals are observed, and the upper limits on the decay branching fractions are set to be B(Λc+→Λπ+π−e+νe)<3.9×10−4 and B(Λc+→pKS0π−e+νe)<3.3×10−4 at the 90% confidence level, respectively.

AB - We search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe in a sample of 4.5 fb−1 of e+e− annihilation data collected in the center-of-mass energy region between 4.600 GeV and 4.699 GeV by the BESIII detector at the BEPCII. No significant signals are observed, and the upper limits on the decay branching fractions are set to be B(Λc+→Λπ+π−e+νe)<3.9×10−4 and B(Λc+→pKS0π−e+νe)<3.3×10−4 at the 90% confidence level, respectively.

KW - BESIII

KW - Branching fractions

KW - Semi-leptonic decays

KW - Λ baryon

UR - https://www.scopus.com/pages/publications/85161698388

U2 - 10.1016/j.physletb.2023.137993

DO - 10.1016/j.physletb.2023.137993

M3 - Article

AN - SCOPUS:85161698388

SN - 0370-2693

VL - 843

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 137993

ER -

Search for the semi-leptonic decays Λ_c⁺→Λπ⁺π⁻e⁺ν_e and Λ_c⁺→pK_S⁰π⁻e⁺ν_e

Abstract

Keywords

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