Study of the D(0)p amplitude in Lambda(0)(b) -> D(0)p pi(-) decays

Bonivento W.;Dettori F.;Manca G.;Oldeman R.;Saitta B.;
2017-01-01

Abstract

An amplitude analysis of the decay Lambda(0)(b) -> D(0)p pi(-) is performed in the part of the phase space containing resonances in the D(0)p 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 Lambda(+)(c) states that decay into D(0)p is studied. The masses widths, quantum numbers of the Lambda(c)(2880)(+), Lambda(c) (2940)(+) resonances are measured. The constraints on the spin, parity for the Lambda(c)(2940)(+) state are obtained for the first time. A near-threshold enhancement in the D(0)p amplitude is investigated, found to be consistent with a new resonance denoted the Lambda(c) (2860)(+) of spin 3/2, positive parity.
2017
Inglese
5
43
Esperti anonimi
internazionale
scientifica
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S. Albrecht J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Cartelle P., Alvarez; Alves ...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
727
open
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