An amplitude analysis of the decay Λ0b → D0 p π− is performed in the part of the phase space containing resonances in the D0 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 Λc+ states that decay into D0 p 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 D0 p 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 D0 p Amplitude in Λ0b → D0 p π− Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2017(5), 0-42 [10.1007/JHEP05(2017)030].

Study of the D0 p Amplitude in Λ0b → D0 p π− Decays

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZUCCHELLI, STEFANO
2017

Abstract

An amplitude analysis of the decay Λ0b → D0 p π− is performed in the part of the phase space containing resonances in the D0 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 Λc+ states that decay into D0 p 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 D0 p amplitude is investigated and found to be consistent with a new resonance, denoted the Λc(2860)+, of spin 3/2 and positive parity.
2017
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Study of the D0 p Amplitude in Λ0b → D0 p π− Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2017(5), 0-42 [10.1007/JHEP05(2017)030].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
File in questo prodotto:
File Dimensione Formato  
2017-AR-31-Study_of_the_D0_p_Amplitude_in_Lambda0b_to_D0_p_pim_Dec-JHEP.pdf

accesso aperto

Tipo: Versione (PDF) editoriale
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
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/11585/591960
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 71
  • ???jsp.display-item.citation.isi??? 60
social impact