Szczegóły publikacji
Opis bibliograficzny
First observation of the rare purely baryonic decay $B^{0}$ $\to$ $p\bar{p}$ / R. Aij, [et al.], A. DENDEK, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], W. KUCEWICZ, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], B. RACHWAŁ, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2017 — vol. 119 iss. 23, s. 232001-1–232001-10. — Bibliogr. s. 232001-5–232001-6. — Publikacja dostępna online od: 2017-12-04. — W. Kucewicz – dod. afiliacja: Polish Academy of Sciences
Autorzy (806)
Dane bibliometryczne
| ID BaDAP | 111600 |
|---|---|
| Data dodania do BaDAP | 2018-01-16 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.119.232001 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp | |
| Czasopismo/seria | Physical Review Letters |
Abstract
The first observation of the decay of a B0 meson to a purely baryonic final state, B-0 -> p$(p)over-bar-$ , is reported. The proton-proton collision data sample used was collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponds to an integrated luminosity of 3.0 fb(-1). The branching fraction is determined to be B(B-0 -> p$(p)over-bar-$) = (1.25 +/- 0.27 +/- 0.18) x 10(-8), where the first uncertainty is statistical and the second systematic. The decay mode B-0 -> p$(p)over-bar-$ is the rarest decay of the B-0 meson observed to date. The decay B-s(0 )-> p$(p)over-bar-$ is also investigated. No signal is seen and the upper limit B(B-s(0) -> p$(p)over-bar-$) < 1.5 x 10(-8) at 90% confidence level is set on the branching fraction.