The first evidence for the decay B+→π+e+e- is reported using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb-1. A signal excess with a significance of 3.2σ is observed and the branching fraction is measured to be B(B+→π+e+e-)=(2.4-0.8+0.9 -0.2+0.4)×10-8, where the first set of uncertainties is statistical and the second is systematic. The result is consistent with the Standard Model expectation.

(2026). First evidence of the decay B+ → π+ e+ e- [journal article - articolo]. In PHYSICAL REVIEW LETTERS. Retrieved from https://hdl.handle.net/10446/335246

First evidence of the decay B+ → π+ e+ e-

Lupato, A.;Redi, F.;
2026-01-01

Abstract

The first evidence for the decay B+→π+e+e- is reported using proton-proton collision data recorded by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb-1. A signal excess with a significance of 3.2σ is observed and the branching fraction is measured to be B(B+→π+e+e-)=(2.4-0.8+0.9 -0.2+0.4)×10-8, where the first set of uncertainties is statistical and the second is systematic. The result is consistent with the Standard Model expectation.
articolo
2026
Aaij, R.; Abdelmotteleb, A.  s.  w.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adefisoye, A.  a.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Agapop...espandi
(2026). First evidence of the decay B+ → π+ e+ e- [journal article - articolo]. In PHYSICAL REVIEW LETTERS. Retrieved from https://hdl.handle.net/10446/335246
File allegato/i alla scheda:
File Dimensione del file Formato  
NEW_97c9-jl1m.pdf

accesso aperto

Versione: publisher's version - versione editoriale
Licenza: Creative commons
Dimensione del file 1.3 MB
Formato Adobe PDF
1.3 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/10446/335246
Citazioni
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact