Szczegóły publikacji
Opis bibliograficzny
Evidence for an $\eta_c(1S)\pi^−$ resonance in $B^0 \to \eta_c(1S)K^+\pi^−$ decays / R. Aaij, [et al.], A. DENDEK, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], W. KRUPA, [et al.], W. KUCEWICZ, [et al.], M. W. MAJEWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], B. RACHWAŁ, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.], M. TOBIN, [et al.] // The European Physical Journal. C, Particles and Fields ; ISSN 1434-6044. — 2018 — vol. 78 iss. 12 art. no. 1019, s. 1–23. — Bibliogr. s. 18–19, Abstr. — Publikacja dostępna online od: 2018-12-17. — W. Kucewicz - dod. afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Kraków
Autorzy (846)
Dane bibliometryczne
| ID BaDAP | 119323 |
|---|---|
| Data dodania do BaDAP | 2019-01-15 |
| Tekst źródłowy | URL |
| DOI | 10.1140/epjc/s10052-018-6447-z |
| Rok publikacji | 2018 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | European Physical Journal, C |
Abstract
A Dalitz plot analysis of /30 ric(1S)K+7decays is performed using data samples of pp collisions collected with the LHCb detector at centre -of -mass energies of./7 = 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 4.7 fb-1. A satisfactory description of the data is obtained when including a contribution representing an exotic qc (1 S).7– resonant state. The significance of this exotic resonance is more than three standard deviations, while its mass and width are 4096 20 is MeV and 152 +58 -P6 MeV, respectively. The spin -parity assignments JP = 0+ and JP = 1- are both consistent with the data. In addition, the first measurement of the B -> ric(1S)K+71-branching fraction is performed and gives B(B -> = (5.73 0.24 0.13 0.66) x 10-4, where the first uncertainty is statistical, the second systematic, and the third is due to limited knowledge of external branching fractions.
