Inclusive B-Meson Flavour-Tagging Algorithm at LHCb

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UDC.coleccionInvestigación
UDC.departamentoFísica e Ciencias da Terra
UDC.grupoInvFísica e Tecnoloxía Nuclear e Altas Enerxías (FiTNAE)
UDC.institutoCentroCITENI - Centro de Investigación en Tecnoloxías Navais e Industriais
UDC.institutoCentroCIF - Campus Industrial de Ferrol
UDC.journalTitleJournal of High Energy Physics
UDC.startPageArticle 41
UDC.volume2025
dc.contributor.authorLHCb collaboration
dc.contributor.authorChobanova, Veronika
dc.contributor.authorAndrés Estrada, Sergio
dc.contributor.authorDalseno, Jeremy
dc.contributor.authorMartínez Santos, Diego
dc.contributor.authorProuve, Claire
dc.contributor.authorVázquez Sierra, Carlos
dc.contributor.authorWendel, John
dc.date.accessioned2026-09-02T17:32:37Z
dc.date.available2026-09-02T17:32:37Z
dc.date.issued2025-11-10
dc.description.abstract[Abstract] A new algorithm is developed to identify the flavour of neutral B mesons at production in pp collisions by utilising all tracks from the hadronisation process. The algorithm is calibrated separately for B0 and mesons using B0 → J/ψK+π− and decays from pp collision data collected by the LHCb experiment at a centre-of-mass energy of 13 TeV. This new algorithm improves the tagging power by 35% for B0 mesons and 20% for mesons when compared to the combined performance of the existing LHCb flavour-tagging algorithms.
dc.description.sponsorshipWe express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: ARC (Australia); CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMFTR, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MCID/IFA (Romania); MICIU and AEI (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (U.S.A.). We acknowledge the computing resources that are provided by ARDC (Australia), CBPF (Brazil), CERN, IHEP and LZU (China), IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), Polish WLCG (Poland), IFIN-HH (Romania), PIC (Spain), CSCS (Switzerland), and GridPP (United Kingdom). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from Key Research Program of Frontier Sciences of CAS, CAS PIFI, CAS CCEPP, Fundamental Research Funds for the Central Universities, and Sci. & Tech. Program of Guangzhou (China); Minciencias (Colombia); EPLANET, Marie Skłodowska-Curie Actions, ERC and NextGenerationEU (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and Région Auvergne-Rhône-Alpes (France); Alexander-von-Humboldt Foundation (Germany); ICSC (Italy); Severo Ochoa and María de Maeztu Units of Excellence, GVA, XuntaGal, GENCAT, InTalent-Inditex and Prog. Atracción Talento CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom).
dc.identifier.citationThe LHCb collaboration., Aaij, R., Abdelmotteleb, A.S.W. et al. Inclusive B-meson flavour-tagging algorithm at LHCb. J. High Energ. Phys. 2025, 41 (2025). https://doi.org/10.1007/JHEP11(2025)041
dc.identifier.doi10.1007/JHEP11(2025)041
dc.identifier.issn1029-8479
dc.identifier.urihttps://hdl.handle.net/2183/49135
dc.language.isoeng
dc.publisherSpringer Nature
dc.relation.urihttps://doi.org/10.1007/JHEP11(2025)041
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectB Physics
dc.subjectCP Violation
dc.subjectFlavour Physics
dc.subjectHadron-Hadron Scattering
dc.titleInclusive B-Meson Flavour-Tagging Algorithm at LHCb
dc.typejournal article
dc.type.hasVersionVoR
dspace.entity.typePublication
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