# Study of the D 0 p amplitude in Λb0 → D 0 pπ − decays

The LHCb Collaboration

Результат исследования: Научные публикации в периодических изданияхстатья

32 Цитирования (Scopus)

### Аннотация

An amplitude analysis of the decay Λb 0 → D0 is performed in the part of the phase space containing resonances in the D0p channel. The study is based on a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions recorded by the LHCb experiment. The spectrum of excited Λc + states that decay into D0p is studied. The masses, widths and quantum numbers of the Λc(2880)+ and Λc(2940)+ resonances are measured. The constraints on the spin and parity for the Λc(2940)+ state are obtained for the first time. A near-threshold enhancement in the D0p amplitude is investigated and found to be consistent with a new resonance, denoted the Λc(2860)+, of spin 3/2 and positive parity.

Язык оригинала английский 30 43 Journal of High Energy Physics 2017 5 https://doi.org/10.1007/JHEP05(2017)030 Опубликовано - 1 мая 2017