A study of Λb0 baryon decays to the DpK- final state is presented based on a proton-proton collision data sample corresponding to an integrated luminosity of 9 fb-1 collected with the LHCb detector. Two Λb0 decays are considered, Λb0→DpK- with D→K-π+ and D→K+π-, where D represents a superposition of D0 and D¯0 states. The latter process is expected to be suppressed relative to the former, and is observed for the first time. The ratio of branching fractions of the two decays is measured, and the CP asymmetry of the suppressed mode, which is sensitive to the Cabibbo-Kobayashi-Maskawa angle γ, is also reported.

Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen Gallego, F., Ackernley, T., Adeva, B., et al. (2021). Observation of the suppressed Λb0 →dpK- decay with D →k+π- and measurement of its CP asymmetry. PHYSICAL REVIEW D, 104(11) [10.1103/PhysRevD.104.112008].

Observation of the suppressed Λb0 →dpK- decay with D →k+π- and measurement of its CP asymmetry

Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Martinazzoli L.;Martinelli M.;Meloni S.;Minotti A.;Petruzzo M.;Pizzichemi M.;Salomoni M.;Shields E. B.;
2021

Abstract

A study of Λb0 baryon decays to the DpK- final state is presented based on a proton-proton collision data sample corresponding to an integrated luminosity of 9 fb-1 collected with the LHCb detector. Two Λb0 decays are considered, Λb0→DpK- with D→K-π+ and D→K+π-, where D represents a superposition of D0 and D¯0 states. The latter process is expected to be suppressed relative to the former, and is observed for the first time. The ratio of branching fractions of the two decays is measured, and the CP asymmetry of the suppressed mode, which is sensitive to the Cabibbo-Kobayashi-Maskawa angle γ, is also reported.
Articolo in rivista - Articolo scientifico
B physics; Branching fraction; Flavor physics; Hadron-Hadron scattering (experiments);
English
2021
104
11
A43
open
Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen Gallego, F., Ackernley, T., Adeva, B., et al. (2021). Observation of the suppressed Λb0 →dpK- decay with D →k+π- and measurement of its CP asymmetry. PHYSICAL REVIEW D, 104(11) [10.1103/PhysRevD.104.112008].
File in questo prodotto:
File Dimensione Formato  
10281-351051_VoR.pdf

accesso aperto

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Licenza: Creative Commons
Dimensione 785.92 kB
Formato Adobe PDF
785.92 kB 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/10281/351051
Citazioni
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 6
Social impact