Decays of the form B(s) 0 → J/ψ KS 0h+h(′)- (h(′) = K, π) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb-1 recorded with the LHCb detector. The first observation of the B(s) 0 → J/ψ KS 0K±π∓ decay is reported, with significance in excess of 10 standard deviations. The B0→J/ψKs 0K+K- decay is also observed for the first time. The branching fraction of B0→J/ψKs 0π+π- is determined, to significantly better precision than previous measurements, using B0→ J/ψKs 0 as a normal-isation channel. Branching fractions and upper limits of the other B(s) 0→ J/ψKs 0h+h(′)- modes are determined relative to that of the B0→ /ψKs 0π+π- decay.

Observation of the Bs 0→J/ψKs 0K±π∓ decay / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. a., A., S., A., S., A., Y., A., L., A.n., L. b., A., J., A., R., A., M. b., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - STAMPA. - 2014:(2014). [10.1007/JHEP07(2014)140]

Observation of the Bs 0→J/ψKs 0K±π∓ decay

G. Casse;SARTI, ALESSIO;SCIUBBA, Adalberto;
2014

Abstract

Decays of the form B(s) 0 → J/ψ KS 0h+h(′)- (h(′) = K, π) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb-1 recorded with the LHCb detector. The first observation of the B(s) 0 → J/ψ KS 0K±π∓ decay is reported, with significance in excess of 10 standard deviations. The B0→J/ψKs 0K+K- decay is also observed for the first time. The branching fraction of B0→J/ψKs 0π+π- is determined, to significantly better precision than previous measurements, using B0→ J/ψKs 0 as a normal-isation channel. Branching fractions and upper limits of the other B(s) 0→ J/ψKs 0h+h(′)- modes are determined relative to that of the B0→ /ψKs 0π+π- decay.
2014
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of the Bs 0→J/ψKs 0K±π∓ decay / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. a., A., S., A., S., A., Y., A., L., A.n., L. b., A., J., A., R., A., M. b., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - STAMPA. - 2014:(2014). [10.1007/JHEP07(2014)140]
File allegati a 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.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/665068
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact