Szczegóły publikacji
Opis bibliograficzny
Observation of the ${B}^{0}_{s} \to {\eta'\eta'}$ decay / R. Aaij, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], W. KUCEWICZ, [et al.], P. MORAWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2015 — vol. 115 iss. 5, s. 051801-1–051801-9. — Bibliogr. s. 051801-5. — Publikacja dostępna online od: 2015-07-28. — W. Kucewicz – dod. afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (3000)
Dane bibliometryczne
| ID BaDAP | 93508 |
|---|---|
| Data dodania do BaDAP | 2015-12-03 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.115.051801 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
The first observation of the B0s → η0η0 decay is reported. The study is based on a sample of proton-proton collisions corresponding to 3.0 fb−1 of integrated luminosity collected with the LHCb detector. The significance of the signal is 6.4 standard deviations. The branching fraction is measured to be ½3.31 0.64ðstatÞ 0.28ðsystÞ 0.12ðnormÞ × 10−5, where the third uncertainty comes from the B →η0 K branching fraction that is used as a normalization. In addition, the charge asymmetries of B → η0 K and B → ϕK, which are control channels, are measured to be ð−0.2 1.3Þ% and ðþ1.7 1.3Þ%, respectively. All results are consistent with theoretical expectations.
