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−
Graverini E.;Lazzari F.;Punzi G.;
2026-01-01
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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


