Skip to main navigation Skip to search Skip to main content

Improved branching-fraction measurements of Bs0→KS0h+h′− decays and first observation of Bs0→KS0K+K−

  • The LHCb Collaboration

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

This paper presents a study of the charmless three-body decays Bs0→KS0h+h′− (where h() = π, K), using a sample of pp collision data collected by the LHCb experiment during Runs 1 and 2 of the LHC, corresponding to an integrated luminosity of 9 fb−1. The decay Bs0→KS0K+K− is observed for the first time, and the following ratios of branching fractions are measured: (Formula presented.) where the uncertainties are statistical, systematic, and due to knowledge of the ratio of hadronisation fractions of the Bs0 and B0 mesons, respectively.

Original languageEnglish
Article number71
Pages (from-to)1-337
Number of pages38
JournalJournal of High Energy Physics
Volume2026
Issue number7
Early online date8 Jul 2026
DOIs
Publication statusPublished - Jul 2026

Bibliographical note

Publisher Copyright:
© The Author(s) 2026.

Funding

Funders
Ministerio de Ciencia, Innovación y Universidades
Institutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei'
Agence Nationale de la Recherche
Australian Research Council
Australian Research Data Commons
National Academy of Sciences of Ukraine
Narodowe Centrum Nauki
National Science Foundation
Ministerul Cercetării, Inovării şi Digitalizării
IPhU (France)
Institut national de physique nucléaire et de physique des particules
Science and Technology Facilities Council
H2020 Marie Skłodowska-Curie Actions
CEA (France)
NASU (Ukraine)
Key Research Program of Frontier Sciences of CAS (China)
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Prog. Atracción Talento CM (Spain)
Leverhulme Trust
DOE NP (U.S.A.)
Labex P2IO (France)
CAS PIFI (China)
DFG (Germany)
SURF
ICSC (Italy)
Financiadora de Estudos e Projetos
Centre National de la Recherche Scientifique
Max-Planck-Gesellschaft
InTalent-Inditex (Spain)
NSF
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Karlsruhe Institute of Technology
Deutsche Forschungsgemeinschaft
European Commission
Région Auvergne-Rhône-Alpes
DOE
International Council of Shopping Centers
Lanzhou University
Agencia Estatal de Investigación
CAS Center for Excellence in Particle Physics
Institutul de Fizică Atomică
Ministry of Science and Technology of the People's Republic of China
GridPP
Institute of High Energy Physics, Chinese Academy of Sciences
GENCAT (Spain)
Ministerio de Ciencia, Tecnología e Innovación
BMFTR (Germany)
BMFTR
Deutsches Elektronen-Synchrotron
CNRS/IN2P3 (France)
Narodowym Centrum Nauki
Chinese Academy of Sciences
SER (Switzerland)
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
NextGenerationEU
Royal Society
Sociedad Española de Reumatología
European Research Council
EPLANET
XuntaGal (Spain)
Ministerstwo Edukacji i Nauki
the Royal Society (United Kingdom)
Severo Ochoa and María de Maeztu Units of Excellence (Spain)
A*MIDEX (France)
Generalitat Valenciana
CERN
WLCG
Alexander von Humboldt-Stiftung
CBPF
Istituto Nazionale di Fisica Nucleare
UK Research and Innovation
National Natural Science Foundation of China

    Keywords

    • B Physics
    • Branching fraction
    • Flavour Physics
    • Hadron-Hadron Scattering

    Fingerprint

    Dive into the research topics of 'Improved branching-fraction measurements of Bs0→KS0h+h′− decays and first observation of Bs0→KS0K+K−'. Together they form a unique fingerprint.

    Cite this