Search for a massless particle beyond the Standard Model in the Σ+ → p + invisible decay

The BESIII collaboration

doi:10.1016/j.physletb.2024.138614

Search for a massless particle beyond the Standard Model in the Σ⁺ → p + invisible decay

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

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

13 Scopus citations

Abstract

A massless particle beyond the Standard Model is searched for in the two-body decay Σ⁺→p+invisible using (1.0087±0.0044)×10¹⁰ J/ψ events collected at a center-of-mass energy of s=3.097GeV with the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction B(Σ⁺→p+invisible) is determined to be 3.2×10⁻⁵ at the 90% confidence level. This is the first search for a flavor-changing neutral current process with missing energy in hyperon decays which plays an important role in constraining new physics models.

Original language	English
Article number	138614
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	852
DOIs	https://doi.org/10.1016/j.physletb.2024.138614
State	Published - May 2024

Keywords

BESIII
BSM particle
FCNC process
Hyperon decay

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10.1016/j.physletb.2024.138614

Cite this

@article{527cfb1ce54c4048aff31e84e2d8e9f3,

title = "Search for a massless particle beyond the Standard Model in the Σ+ → p + invisible decay",

abstract = "A massless particle beyond the Standard Model is searched for in the two-body decay Σ+→p+invisible using (1.0087±0.0044){\texttimes}1010 J/ψ events collected at a center-of-mass energy of s=3.097GeV with the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction B(Σ+→p+invisible) is determined to be 3.2{\texttimes}10−5 at the 90\% confidence level. This is the first search for a flavor-changing neutral current process with missing energy in hyperon decays which plays an important role in constraining new physics models.",

keywords = "BESIII, BSM particle, FCNC process, Hyperon decay",

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

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

year = "2024",

month = may,

doi = "10.1016/j.physletb.2024.138614",

language = "English",

volume = "852",

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

issn = "0370-2693",

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TY - JOUR

T1 - Search for a massless particle beyond the Standard Model in the Σ+ → p + invisible decay

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Afedulidis, O.

AU - Kabana, S.

AU - The BESIII collaboration

PY - 2024/5

Y1 - 2024/5

N2 - A massless particle beyond the Standard Model is searched for in the two-body decay Σ+→p+invisible using (1.0087±0.0044)×1010 J/ψ events collected at a center-of-mass energy of s=3.097GeV with the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction B(Σ+→p+invisible) is determined to be 3.2×10−5 at the 90% confidence level. This is the first search for a flavor-changing neutral current process with missing energy in hyperon decays which plays an important role in constraining new physics models.

AB - A massless particle beyond the Standard Model is searched for in the two-body decay Σ+→p+invisible using (1.0087±0.0044)×1010 J/ψ events collected at a center-of-mass energy of s=3.097GeV with the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction B(Σ+→p+invisible) is determined to be 3.2×10−5 at the 90% confidence level. This is the first search for a flavor-changing neutral current process with missing energy in hyperon decays which plays an important role in constraining new physics models.

KW - BESIII

KW - BSM particle

KW - FCNC process

KW - Hyperon decay

UR - https://www.scopus.com/pages/publications/85189549767

U2 - 10.1016/j.physletb.2024.138614

DO - 10.1016/j.physletb.2024.138614

M3 - Article

AN - SCOPUS:85189549767

SN - 0370-2693

VL - 852

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 - 138614

ER -

Search for a massless particle beyond the Standard Model in the Σ⁺ → p + invisible decay

Abstract

Keywords

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