This paper presents a study of the charmless three-body decays Bs0→KS0h+h′− (where h(′) = π, K), using a sample of pp collision data collected by the LHCb experiment during Runs 1 and 2 of the LHC, corresponding to an integrated luminosity of 9 fb−1. The decay Bs0→KS0K+K− is observed for the first time, and the following ratios of branching fractions are measured: (Formula presented.) where the uncertainties are statistical, systematic, and due to knowledge of the ratio of hadronisation fractions of the Bs0 and B0 mesons, respectively.

Improved branching-fraction measurements of Bs0->KS0h+h′- decays and first observation of Bs0->KS0K+K-

Bassi G.
Membro del Collaboration Group
;
Kleijne N.
Membro del Collaboration Group
;
Morello M. J.
Membro del Collaboration Group
;
Passaro D.
Membro del Collaboration Group
;
Pica L.
Membro del Collaboration Group
;
Riccardi D.
Membro del Collaboration Group
;
2026

Abstract

This paper presents a study of the charmless three-body decays Bs0→KS0h+h′− (where h(′) = π, K), using a sample of pp collision data collected by the LHCb experiment during Runs 1 and 2 of the LHC, corresponding to an integrated luminosity of 9 fb−1. The decay Bs0→KS0K+K− is observed for the first time, and the following ratios of branching fractions are measured: (Formula presented.) where the uncertainties are statistical, systematic, and due to knowledge of the ratio of hadronisation fractions of the Bs0 and B0 mesons, respectively.
2026
Settore FIS/01 - Fisica Sperimentale
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
B Physics; Branching fraction; Flavour Physics; Hadron-Hadron Scattering
File in questo prodotto:
File Dimensione Formato  
JHEP07(2026)071(1).pdf

accesso aperto

Tipologia: Published version
Licenza: Creative Commons
Dimensione 1.52 MB
Formato Adobe PDF
1.52 MB Adobe PDF

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/11384/172263
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
  • OpenAlex 0
social impact