Szczegóły publikacji
Opis bibliograficzny
Test of lepton universality in beauty-quark decays / R. Aaij, [et al.], A. DENDEK, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], P. KOPCIEWICZ, [et al.], W. KRUPA, [et al.], W. KUCEWICZ, [et al.], O. MADEJCZYK, [et al.], M. W. MAJEWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], B. RACHWAŁ, [et al.], J. RYŻKA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.] // Nature Physics ; ISSN 1745-2473. — 2022 — vol. 18 iss. 3, s. 277–282, [+19]. — Bibliogr. s. 281–282. — Publikacja dostępna online od: 2022-03-15. — W. KUCEWICZ - pierwsza afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (961)
- AGHDendek Adam
- AGHFirlej Mirosław
- AGHFiutowski Tomasz
- AGHIdzik Marek
- AGHKopciewicz Paweł
- AGHKrupa Wojciech
- AGHKucewicz Wojciech
- AGHMadejczyk-Dziedzic Olga
- AGHMajewski Maciej W.
- AGHMoroń Jakub
- AGHObłąkowska-Mucha Agnieszka
- AGHRachwał Bartłomiej
- AGHRyżka Jakub
- AGHSzumlak Tomasz
- AGHŚwientek Krzysztof
- Aaij Roel
- Bertolin A.
Dane bibliometryczne
ID BaDAP | 139748 |
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Data dodania do BaDAP | 2022-04-12 |
Tekst źródłowy | URL |
DOI | 10.1038/s41567-021-01478-8 |
Rok publikacji | 2022 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Creative Commons | |
Czasopismo/seria | Nature Physics |
Abstract
The standard model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak interaction strengths. Previous measurements have shown that a wide range of particle decays are consistent with this principle of lepton universality. This article presents evidence for the breaking of lepton universality in beauty-quark decays, with a significance of 3.1 standard deviations, based on proton–proton collision data collected with the LHCb detector at CERN’s Large Hadron Collider. The measurements are of processes in which a beauty meson transforms into a strange meson with the emission of either an electron and a positron, or a muon and an antimuon. If confirmed by future measurements, this violation of lepton universality would imply physics beyond the standard model, such as a new fundamental interaction between quarks and leptons.