We study the decays B+-->eta(c)K(+) and B-0-->eta(c)K(0), where the eta(c) is reconstructed in the K(S)(0)K(+/-)pi(-/+) and K(+)K(-)pi(0) decay modes. Results are based on a sample of 86 million B (B) over bar pairs collected with the BABAR detector at the SLAC e(+)e(-) B Factory. We measure the product of branching fractions B(B+-->eta(c)K(+))xB(eta(c)-->K (K) over bar pi)=(7.40+/-0.50+/-0.70)x10(-5) and B(B-0-->eta(c)K(0))xB(eta(c)-->K (K) over bar pi)=(6.48+/-0.85+/-0.71)x10(-5), where the first error is statistical and the second is systematic. In addition, we search for B-->eta(c)K events with eta(c)-->2(K+K-) and eta(c)-->phiphi and determine the eta(c) decay branching fraction ratios B(eta(c)-->2(K+K-))/B(eta(c)-->K (K) over bar pi)=(2.3+/-0.7+/-0.6)x10(-2) and B(eta(c)-->phiphi)/B(eta(c)-->K (K) over bar pi)=(5.5+/-1.4+/-0.5)x10(-2).

Branching fraction measurements of B ->eta K-c decays

ANDREOTTI, Mirco;AZZOLINI, Virginia;CALABRESE, Roberto;CIBINETTO, Gianluigi;LUPPI, Eleonora;NEGRINI, Matteo;SARTI, Alessio;
2004

Abstract

We study the decays B+-->eta(c)K(+) and B-0-->eta(c)K(0), where the eta(c) is reconstructed in the K(S)(0)K(+/-)pi(-/+) and K(+)K(-)pi(0) decay modes. Results are based on a sample of 86 million B (B) over bar pairs collected with the BABAR detector at the SLAC e(+)e(-) B Factory. We measure the product of branching fractions B(B+-->eta(c)K(+))xB(eta(c)-->K (K) over bar pi)=(7.40+/-0.50+/-0.70)x10(-5) and B(B-0-->eta(c)K(0))xB(eta(c)-->K (K) over bar pi)=(6.48+/-0.85+/-0.71)x10(-5), where the first error is statistical and the second is systematic. In addition, we search for B-->eta(c)K events with eta(c)-->2(K+K-) and eta(c)-->phiphi and determine the eta(c) decay branching fraction ratios B(eta(c)-->2(K+K-))/B(eta(c)-->K (K) over bar pi)=(2.3+/-0.7+/-0.6)x10(-2) and B(eta(c)-->phiphi)/B(eta(c)-->K (K) over bar pi)=(5.5+/-1.4+/-0.5)x10(-2).
2004
Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, Jm; Hicheur, A; Karyotakis, Y; Lees, Jp; Tisserand, V; Zghiche, A; Palano, A; Pompili, A; Che...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in SFERA 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/11392/1211513
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 11
social impact