Szczegóły publikacji
Opis bibliograficzny
Dalitz plot analysis of $B^{0} \to \bar{D}^{0}\pi^{+}\pi^{-}$ decays / 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. D, Particles, fields, gravitation, and cosmology ; ISSN 1550-7998. — 2015 — vol. 92 iss. 3, s. 032002-1–032002-40. — Bibliogr. s. 032002-34–032002-36. — Publikacja dostępna online od: 2015-08-07. — W. Kucewicz – dod. afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (3000)
Dane bibliometryczne
| ID BaDAP | 93421 |
|---|---|
| Data dodania do BaDAP | 2015-12-03 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevD.92.032002 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review, D |
Abstract
The resonant substructures of B0 → D¯ 0πþπ− decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions collected by the LHCb detector is used. The branching fraction of the B0 → D¯ 0πþπ− decay in the region mðD¯ 0πÞ >2.1 GeV=c2 is measured to be ð8.46 0.14 0.29 0.40Þ × 10−4, where the first uncertainty is statistical, the second is systematic and the last arises from the normalization channel B0 → Dð2010Þ−πþ. The πþπ− S-wave components are modeled with the isobar and K-matrix formalisms. Results of the Dalitz plot analyses using both models are presented. A resonant structure at mðD¯ 0π−Þ ≈ 2.8 GeV=c2 is confirmed and its spin-parity is determined for the first time as JP ¼ 3−. The branching fraction, mass and width of this structure are determined together with those of the D 0ð2400Þ− and D 2ð2460Þ− resonances. The branching fractions of other B0 → D¯ 0h0 decay components with h0 → πþπ− are also reported. Many of these branching fraction measurements are the most precise to date. The first observation of the decays B0 → D¯ 0f0ð500Þ, B0 → D¯ 0f0ð980Þ, B0 → D¯ 0ρð1450Þ, B0 → D 3ð2760Þ−πþ and the first evidence of B0 → D¯ 0f0ð2020Þ are presented.
