An amplitude analysis of the B0->eta_c(1S)K+pi- decays with eta_c(1S)->ppbar is performed using a sample corresponding to an integrated luminosity of 9fb-1 of pp collision data collected by the LHCb detector at centre-of-mass energies of sqrt{s} = 7, 8 and 13TeV. The data are described with a model including only intermediate contributions from known K∗0 resonances. Evidence for an exotic resonance in the eta_c(1S)pi- system, reported in a previous analysis of this decay channel, is not confirmed. The inclusive branching fraction of the B0->eta_c(1S)K+pi- decays is measured to be (Formula presented.) where the first uncertainty is statistical, the second systematic, and the third arises from the limited knowledge of external branching fractions.
Amplitude analysis of B0->eta_{c}(1S)K+pi- decays
Xu A.Membro del Collaboration Group
;Riccardi D.;Pica L.Membro del Collaboration Group
;Passaro D.Membro del Collaboration Group
;Morello M. J.Membro del Collaboration Group
;Kleijne N.Membro del Collaboration Group
;Cordova G.Membro del Collaboration Group
;Celestino I.Membro del Collaboration Group
;
2026
Abstract
An amplitude analysis of the B0->eta_c(1S)K+pi- decays with eta_c(1S)->ppbar is performed using a sample corresponding to an integrated luminosity of 9fb-1 of pp collision data collected by the LHCb detector at centre-of-mass energies of sqrt{s} = 7, 8 and 13TeV. The data are described with a model including only intermediate contributions from known K∗0 resonances. Evidence for an exotic resonance in the eta_c(1S)pi- system, reported in a previous analysis of this decay channel, is not confirmed. The inclusive branching fraction of the B0->eta_c(1S)K+pi- decays is measured to be (Formula presented.) where the first uncertainty is statistical, the second systematic, and the third arises from the limited knowledge of external branching fractions.| File | Dimensione | Formato | |
|---|---|---|---|
|
s10052-026-15474-w.pdf
accesso aperto
Tipologia:
Published version
Licenza:
Creative Commons
Dimensione
2.6 MB
Formato
Adobe PDF
|
2.6 MB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.



