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Accès ouvert déclaré 2026 article

Search for a massless particle beyond the Standard Model in the Ξ0 → Λ + invisible decay

0Citations signalées — pas une note de qualité
102Institutions déclarées
20Pays d’affiliation déclarés

Résumé fourni par la source

A bstract A search for a massless beyond-standard-model particle is performed in the decay Ξ 0 → Λ + invisible using (1.0087 ± 0.0044) × 10 10 J / ψ events collected with the BESIII detector at the BEPCII collider. No significant signal is observed and the upper limit on the branching fraction ℬ(Ξ 0 → Λ + invisible) is set to be 2.3 × 10 − 4 at the 90% confidence level. This is the first search for a flavor-changing neutral current process with missing energy in Ξ 0 decays. Throughout this paper, charge-conjugate processes are always implied.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Search for a massless particle beyond the Standard Model in the Ξ0 → Λ + invisible decay
Date Crossref
08/05/2026
Éditeur
Springer Science and Business Media LLC
Type
journal-article

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Institutions déclarées

Novosibirsk State UniversityBudker Institute of Nuclear PhysicsUppsala UniversityZhengzhou UniversityUniversity of FerraraIstituto Nazionale di Fisica Nucleare, Sezione di FerraraJohannes Gutenberg University MainzUniversity of TurinUniversity of Science and Technology of ChinaJoint Institute for Nuclear ResearchUniversity of Chinese Academy of SciencesNorth China Electric Power UniversityNational Centre for Nuclear ResearchMongolian Academy of SciencesIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiCarnegie Mellon UniversityUniversity of MünsterWuhan UniversityLanzhou UniversityIstinye UniversityPeking UniversityNankai UniversityChina University of GeosciencesHenan Normal UniversityNanjing UniversityTsinghua UniversityFudan UniversityInstitute of Modern PhysicsGuangxi University of Science and TechnologyChung-Ang UniversityUniversity of BristolBristol Robotics LaboratoryYunnan UniversityHelmholtz Institute MainzRuhr University BochumUniversity of South ChinaLiaoning UniversityInner Mongolia UniversityJilin UniversityJilin Medical UniversityMoscow Institute of Physics and TechnologyUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Piedmont UniversityUniversity of ManchesterUniversity of OxfordGSI Helmholtz Centre for Heavy Ion ResearchShandong University of TechnologyShandong UniversityNanjing Normal UniversityShandong Normal UniversityIndiana UniversityUniversity of Hawaii SystemHangzhou Normal UniversitySuranaree University of TechnologySouth China Normal UniversityUniversity of the PunjabHuangshan UniversityUniversity of JinanUniversity of TarapacáIndian Institute of Technology MadrasJustus-Liebig-Universität GießenHenan UniversityQufu Normal UniversityRenmin University of ChinaHebei UniversityHunan UniversityChina Center of Advanced Science and TechnologyXi'an Jiaotong UniversitySichuan UniversityGuangxi Normal UniversityCentral China Normal UniversityShanxi University of Traditional Chinese MedicineGuangxi UniversityHenan University of Science and TechnologyHenan University of TechnologyLiaoning Normal UniversityCentral South UniversityZhejiang UniversityGoethe University FrankfurtInstitute of Business Administration KarachiBoğaziçi UniversityUniversity of PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaUniversity of La SerenaFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicUniversity of Silesia in KatowiceKurchatov InstituteHunan Normal UniversityNational Research Tomsk State UniversityChengdu University of TechnologyÉcole Polytechnique Fédérale de LausanneShanghai Jiao Tong UniversityInstitute of Particle PhysicsInstitute of Nuclear and Particle PhysicsNear East UniversityYantai UniversitySouthwest University of Science and TechnologyBeihang UniversityHengyang Normal UniversityShanxi Normal UniversityLongyan UniversityUniversity of Science and Technology Liaoning

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Sujets associés

Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research

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