| Title: |
Test of lepton flavor universality with measurements of R ( D + ) and R ( D * + ) using semileptonic B tagging at the Belle II experiment |
| Authors: |
Adachi, I.; Adamczyk, K.; Aggarwal, L.; Ahmed, H.; Aihara, H.; Akopov, N.; Alghamdi, S.; Alhakami, M.; Aloisio, A.; Althubiti, N.; Amos, K.; Angelsmark, M.; Anh Ky, N.; Antonioli, C.; Asner, D. M.; Atmacan, H.; Aushev, T.; Aushev, V.; Aversano, M.; Ayad, R.; Babu, V.; Bae, H.; Baghel, N. K.; Bahinipati, S.; Bambade, P.; Banerjee, Sw.; Bansal, S.; Barrett, M.; Bartl, M.; Baudot, J.; Beaubien, A.; Becherer, F.; Becker, J.; Bennett, J. V.; Bernlochner, F. U.; Bertacchi, V.; Bertemes, M.; Bertholet, E.; Bessner, M.; Bettarini, S.; Bhardwaj, V.; Bhuyan, B.; Bianchi, F.; Bilka, T.; Biswas, D.; Bobrov, A.; Bodrov, D.; Bolz, A.; Bondar, A.; Borah, J. |
| Contributors: |
Ministry of Education and Science; State Committee of Science; Australian Research Council; Bundesministerium für Bildung, Wissenschaft und Forschung; Austrian Science Fund; European Research Council; Natural Sciences and Engineering Research Council of Canada; Compute Canada; Canarie; National Key Research and Development Program of China; National Natural Science Foundation of China; Natural Science Foundation of Shandong Province; Grantová Agentura České Republiky; Univerzita Karlova v Praze; Seventh Framework Programme; HORIZON EUROPE European Research Council; HORIZON EUROPE Marie Sklodowska-Curie Actions; Institut National de Physique Nucléaire et de Physique des Particules; Centre National de la Recherche Scientifique; Agence Nationale de la Recherche; Bundesministerium für Bildung und Forschung; Deutsche Forschungsgemeinschaft; Helmholtz-Gemeinschaft; Max-Planck-Gesellschaft; Alexander von Humboldt-Stiftung; Department of Atomic Energy, Government of India; Department of Science and Technology, Ministry of Science and Technology, India; University of Petroleum and Energy Studies; Israel Science Foundation; United States-Israel Binational Science Foundation; Ministry of Science and Technology, Israel; Istituto Nazionale di Fisica Nucleare Sezione di Padova; European Commission; NextGenerationEU; Japan Society for the Promotion of Science; Ministry of Education, Culture, Sports, Science and Technology; National Research Foundation of Korea; Korea Institute of Science and Technology Information; Korea Research Environment Open Network; Universiti Malaya; Akademi Sains Malaysia; Ministry of Higher Education, Malaysia; Secretaría de Educación Pública; Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional; Ministerstwo Edukacji i Nauki; Narodowe Centrum Nauki; Ministry of Science and Higher Education of the Russian Federation; National Research University Higher School of Economics; University of Tabuk; King Saud University; Javna Agencija za Raziskovalno Dejavnost RS; Ikerbasque, Basque Foundation for Science; Ministerio de Ciencia e Innovación; Agencia Estatal de Investigación; Generalitat Valenciana; National Science and Technology Council; Ministry of Education; Thailand Center of Excellence in Physics; Türkiye Bilimsel ve Teknolojik Araştırma Kurumu; National Research Foundation of Ukraine; Ministry of Education and Science of Ukraine; National Science Foundation; U.S. Department of Energy; Vietnam Academy of Science and Technology; High Energy Accelerator Research Organization; National Institute of Informatics; Brookhaven National Laboratory; Deutsches Elektronen-Synchrotron; Instituto Nazionale di Fisica Nucleare; University of Victoria; Radiation Science Research Institute; Foreign Large-Size Research Facility Application Supporting Project; GLORIAD; Frontiers of Science Program; SINET6; GridKa |
| Source: |
Physical Review D ; volume 112, issue 3 ; ISSN 2470-0010 2470-0029 |
| Publisher Information: |
American Physical Society (APS) |
| Publication Year: |
2025 |
| Description: |
We report measurements of the ratios of branching fractions , where ℓ denotes either an electron or a muon. These ratios test the universality of the charged-current weak interaction. The results are based on a 365 fb−1 data sample collected with the Belle II detector at the SuperKEKB e+e− collider, which operates at a center-of-mass energy corresponding to the ϒ ( 4 S ) resonance, just above the threshold for BB¯ production. Signal candidates are reconstructed by selecting events in which the companion B meson from the ϒ ( 4 S ) → B B ¯ decay is identified in semileptonic modes. The τ lepton is reconstructed via its leptonic decays. We obtain R |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1103/fmn3-h8fy |
| DOI: |
10.1103/fmn3-h8fy/fulltext |
| Availability: |
https://doi.org/10.1103/fmn3-h8fy; https://link.aps.org/article/10.1103/fmn3-h8fy; http://harvest.aps.org/v2/journals/articles/10.1103/fmn3-h8fy/fulltext |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.58DBD774 |
| Database: |
BASE |