Test of Light-Lepton Universality in the Rates of Inclusive Semileptonic B-Meson Decays at Belle II
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dc.contributor.author | Ahmed, H. | en |
dc.contributor.author | Aihara, H. | en |
dc.contributor.author | Akopov, N. | en |
dc.contributor.author | Aloisio, A. | en |
dc.contributor.author | Ky, N. Anh | en |
dc.contributor.author | Asner, D. M. | en |
dc.contributor.author | Atmacan, H. | en |
dc.contributor.author | Aushev, T. | en |
dc.contributor.author | Aushev, V. | en |
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dc.contributor.author | Bahinipati, S. | en |
dc.contributor.author | Bambade, P. | en |
dc.contributor.author | Banerjee, Sw | en |
dc.contributor.author | Bansal, S. | en |
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dc.contributor.author | Bauer, M. | en |
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dc.contributor.author | Bertacchi, V. | en |
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dc.contributor.author | Xu, X. P. | en |
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dc.contributor.author | Yan, W. | en |
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dc.contributor.author | Ye, H. | en |
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dc.contributor.author | Yoshihara, K. | en |
dc.contributor.author | Zhai, Y. | en |
dc.contributor.author | Zhang, Y. | en |
dc.contributor.author | Zhilich, V. | en |
dc.contributor.author | Zhou, Q. D. | en |
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dc.date.accessioned | 2023-12-08T18:19:14Z | en |
dc.date.available | 2023-12-08T18:19:14Z | en |
dc.date.issued | 2023-08-02 | en |
dc.date.issued | 2023-08-02 | en |
dc.description.abstract | We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(Xe/μ)=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189 fb-1 from electron-positron collisions collected with the Belle II detector. In events where the partner B meson is fully reconstructed, we use fits to the lepton momentum spectra above 1.3 GeV/c to obtain R(Xe/μ)=1.007±0.009(stat)±0.019(syst), which is the most precise lepton-universality test of its kind and agrees with the standard-model expectation. | en |
dc.description.version | Published version | en |
dc.format.extent | 7 page(s) | en |
dc.format.medium | en | |
dc.identifier | ARTN 051804 (Article number) | en |
dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.131.051804 | en |
dc.identifier.eissn | 1079-7114 | en |
dc.identifier.issn | 0031-9007 | en |
dc.identifier.issue | 5 | en |
dc.identifier.orcid | Piilonen, Leo [0000-0001-6836-0748] | en |
dc.identifier.pmid | 37595249 | en |
dc.identifier.uri | https://hdl.handle.net/10919/117141 | en |
dc.identifier.volume | 131 | en |
dc.language.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.uri | https://www.ncbi.nlm.nih.gov/pubmed/37595249 | en |
dc.relation.uri | http://dx.doi.org/10.1103/physrevlett.131.051804 | en |
dc.rights | Creative Commons Attribution 4.0 International | en |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en |
dc.subject | Science & Technology | en |
dc.subject | Physical Sciences | en |
dc.subject | Physics, Multidisciplinary | en |
dc.subject | Physics | en |
dc.subject | MONTE-CARLO | en |
dc.subject | HEAVY | en |
dc.subject | Belle II Collaboration | en |
dc.subject | 5106 Nuclear and Plasma Physics | en |
dc.subject | 5107 Particle and High Energy Physics | en |
dc.subject | 4902 Mathematical Physics | en |
dc.subject | 49 Mathematical Sciences | en |
dc.subject | 51 Physical Sciences | en |
dc.subject | 40 Engineering | en |
dc.title | Test of Light-Lepton Universality in the Rates of Inclusive Semileptonic <i>B</i>-Meson Decays at Belle II | en |
dc.title.serial | Physical Review Letters | en |
dc.type | Article - Refereed | en |
dc.type.other | Article | en |
dc.type.other | Journal | en |
dcterms.dateAccepted | 2023-05-11 | en |
pubs.organisational-group | /Virginia Tech | en |
pubs.organisational-group | /Virginia Tech/Science | en |
pubs.organisational-group | /Virginia Tech/Science/Physics | en |
pubs.organisational-group | /Virginia Tech/All T&R Faculty | en |
pubs.organisational-group | /Virginia Tech/Science/COS T&R Faculty | en |