The first simultaneous test of muon-electron universality using B^{+}→K^{+}ℓ^{+}ℓ^{-} and B^{0}→K^{*0}ℓ^{+}ℓ^{-} decays is performed, in two ranges of the dilepton invariant-mass squared, q^{2}. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9  fb^{-1}. Each of the four lepton universality measurements reported is either the first in the given q^{2} interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.

Test of Lepton Universality in b→sℓ+ℓ− Decays / R. Aaij, A. . .A.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 131:5(2023 Aug 02), pp. 051803.1-051803.13. [10.1103/PhysRevLett.131.051803]

Test of Lepton Universality in b→sℓ+ℓ− Decays

L. Frontini;M. Lazzaroni;C. Mancuso;D. Marangotto;A. Merli;N. Neri;E. Spadaro Norella;G. Tonani;
2023

Abstract

The first simultaneous test of muon-electron universality using B^{+}→K^{+}ℓ^{+}ℓ^{-} and B^{0}→K^{*0}ℓ^{+}ℓ^{-} decays is performed, in two ranges of the dilepton invariant-mass squared, q^{2}. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9  fb^{-1}. Each of the four lepton universality measurements reported is either the first in the given q^{2} interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
Settore IIND-07/C - Fisica dei reattori nucleari
2-ago-2023
Article (author)
File in questo prodotto:
File Dimensione Formato  
PhysRevLett.131.051803.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Licenza: Creative commons
Dimensione 724.85 kB
Formato Adobe PDF
724.85 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

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/2434/1025713
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 183
  • ???jsp.display-item.citation.isi??? 135
  • OpenAlex ND
social impact