A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb−1 is used to measure eleven CP violation observables in B±→ Dh± decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in the three-body final states: K±π∓π0; π+π−π0; K+K−π0 and the suppressed π±K∓π0 combination. The mode where a large CP asymmetry is expected, B±→ [π±K∓π0]DK±, is observed with a significance greater than seven standard deviations. The ratio of the partial width of this mode relative to that of the favoured mode, B±→ [K±π∓π0]DK±, is RADS(K) = (1.27 ± 0.16 ± 0.02) × 10−2. Evidence for a large CP asymmetry is also seen: AADS(K) = −0.38 ± 0.12 ± 0.02. Constraints on the CKM angle γ are calculated from the eleven reported observables. [Figure not available: see fulltext.]

(2022). Constraints on the CKM angle γ from B ± → Dh ± decays using D → h ± h′∓ π 0 final states [journal article - articolo]. In JOURNAL OF HIGH ENERGY PHYSICS. Retrieved from https://hdl.handle.net/10446/288092

Constraints on the CKM angle γ from B ± → Dh ± decays using D → h ± h′∓ π 0 final states

Lupato A.;Redi F.;
2022-01-01

Abstract

A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb−1 is used to measure eleven CP violation observables in B±→ Dh± decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in the three-body final states: K±π∓π0; π+π−π0; K+K−π0 and the suppressed π±K∓π0 combination. The mode where a large CP asymmetry is expected, B±→ [π±K∓π0]DK±, is observed with a significance greater than seven standard deviations. The ratio of the partial width of this mode relative to that of the favoured mode, B±→ [K±π∓π0]DK±, is RADS(K) = (1.27 ± 0.16 ± 0.02) × 10−2. Evidence for a large CP asymmetry is also seen: AADS(K) = −0.38 ± 0.12 ± 0.02. Constraints on the CKM angle γ are calculated from the eleven reported observables. [Figure not available: see fulltext.]
articolo
2022
Inglese
online
2022
7
1
23
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
B Physics; CKM Angle Gamma; CP Violation; Hadron-Hadron Scattering
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinen Gallego, F. J.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C....espandi
info:eu-repo/semantics/article
open
(2022). Constraints on the CKM angle γ from B ± → Dh ± decays using D → h ± h′∓ π 0 final states [journal article - articolo]. In JOURNAL OF HIGH ENERGY PHYSICS. Retrieved from https://hdl.handle.net/10446/288092
Non definito
1011
1.1 Contributi in rivista - Journal contributions::1.1.01 Articoli/Saggi in rivista - Journal Articles/Essays
262
File allegato/i alla scheda:
File Dimensione del file Formato  
JHEP07(2022)099.pdf

accesso aperto

Versione: publisher's version - versione editoriale
Licenza: Creative commons
Dimensione del file 1.38 MB
Formato Adobe PDF
1.38 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Aisberg ©2008 Servizi bibliotecari, Università degli studi di Bergamo | Terms of use/Condizioni di utilizzo

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/288092
Citazioni
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 6
social impact