An amplitude analysis of the decay Λb0 → D0pπ− 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

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Study of the D 0 p amplitude in Λb0 → D 0 pπ − decays. JOURNAL OF HIGH ENERGY PHYSICS, 2017(5) [10.1007/JHEP05(2017)030].

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

BELLOLI, NICOLETTA;BORGHERESI, ALESSIO;Borsato, M;CALVI, MARTA;CARNITI, PAOLO;CASSINA, LORENZO;FAZZINI, DAVIDE;GOTTI, CLAUDIO;GRILLO, LUCIA;Martinelli, M;MATTEUZZI, CLARA;Petruzzo, M;
2017

Abstract

An amplitude analysis of the decay Λb0 → D0pπ− 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
Articolo in rivista - Articolo scientifico
B physics; Charm physics; Hadron-Hadron scattering (experiments); QCD; Spectroscopy; Nuclear and High Energy Physics
English
2017
2017
5
030
open
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Study of the D 0 p amplitude in Λb0 → D 0 pπ − decays. JOURNAL OF HIGH ENERGY PHYSICS, 2017(5) [10.1007/JHEP05(2017)030].
File in questo prodotto:
File Dimensione Formato  
10281-159209.pdf

accesso aperto

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 2.22 MB
Formato Adobe PDF
2.22 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/159209
Citazioni
  • Scopus 65
  • ???jsp.display-item.citation.isi??? 56
Social impact