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Measurement of the Branching Fraction of the Decay B+ -> pi(+) pi(-) l(+) nu(l) in Fully Reconstructed Events at Belle

dc.contributor.authorSchell, Gunnar
dc.contributor.authorBelle Collaboration
dc.date.accessioned2021-07-19T11:07:30Z
dc.date.available2021-07-19T11:07:30Z
dc.date.issued2021-06-01
dc.identifier.citationPhysical Review D 103(11) : (2021) // Article ID 112001es_ES
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.urihttp://hdl.handle.net/10810/52512
dc.description.abstractWe present an analysis of the exclusive B+ -> pi(+) pi(-) l(+) nu(l) decay, where l represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The study exploits the full gamma (4S) data sample collected by the Belle detector, corresponding to 711 fb(-1) of integrated luminosity. Events are selected by fully reconstructing one B meson in hadronic decay modes, subsequently determining the properties of the other B meson. We extract the signal yields using a binned maximum-likelihood fit to the missing-mass squared distribution in bins of the invariant mass of the two pions or the momentum transfer squared. We measure a total branching fraction of B(B+ -> pi(+) pi(-) l(+) nu(l)) = [22.7(-1.6)(+1.9) (stat) +/- 3.5(syst) x 10(-5), where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay.es_ES
dc.description.sponsorshipWe acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council including Grants No. DP180102629, No. DP170102389, No. DP170102204, No. DP150103061, No. FT130100303; Austrian Federal Ministry of Education, Science and Research (FWF) and FWF Austrian Science Fund No. P 31361-N36; the National Natural Science Foundation of China under Contracts No. 11435013, No. 11475187, No. 11521505, No. 11575017, No. 11675166, No. 11705209; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS), Grant No. QYZDJ-SSW-SLH011; the CAS Center for Excellence in Particle Physics (CCEPP); the Shanghai Pujiang Program under Grant No. 18PJ1401000; the Shanghai Science and Technology Committee (STCSM) under Grant No. 19ZR1403000; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; Horizon 2020 ERC Advanced Grant No. 884719 and ERC Starting Grant No. 947006 "InterLeptons" (European Union); the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Atomic Energy (Project Identification No. RTI 4002) and the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B01010135, No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. 2018R1D1A1B07047294, No. 2019K1A3A7A09033840, No. 2019R1I1A3A01058933; Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project, the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information and KREONET/GLORIAD; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Science and Higher Education of the Russian Federation, Agreement 14.W03.31.0026, and the HSE University Basic Research Program, Moscow; University of Tabuk research Grants No. S-1440-0321, No. S-0256-1438, and No. S-0280-1439 (Saudi Arabia); the Slovenian Research Agency Grant No. J1-9124 and No. P1-0135; Ikerbasque, Basque Foundation for Science, Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the United States Department of Energy and the National Science Foundationes_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/884719es_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/947006es_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subjectQED radiative-correctiones_ES
dc.subjectsuniversal Monte-Carloes_ES
dc.subjecttau-lepton propertieses_ES
dc.subjectsemileptonic-Bes_ES
dc.subjectCP-violationes_ES
dc.subjectidentificationes_ES
dc.subjectaverageses_ES
dc.subjecthadrones_ES
dc.subjectphotoses_ES
dc.titleMeasurement of the Branching Fraction of the Decay B+ -> pi(+) pi(-) l(+) nu(l) in Fully Reconstructed Events at Bellees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holderPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (CC BY 4.0)es_ES
dc.rights.holderAtribución 3.0 España*
dc.relation.publisherversionhttps://journals-aps-org.ehu.idm.oclc.org/prd/abstract/10.1103/PhysRevD.103.112001es_ES
dc.identifier.doi10.1103/PhysRevD.103.112001
dc.contributor.funderEuropean Commission
dc.departamentoesFísicaes_ES
dc.departamentoeuFisikaes_ES


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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (CC BY 4.0)
Except where otherwise noted, this item's license is described as Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (CC BY 4.0)