We present measurements of the B ->eta(')K branching fractions; for B+->eta(')K(+) we measure also the time-integrated charge asymmetry A(ch), and for B-0->eta(')K(S)(0) the time-dependent CP-violation parameters S and C. The data sample corresponds to 232x10(6) B (B) over bar pairs produced by e(+)e(-) annihilation at the Upsilon(4S). The results are B(B ->eta(')K(+))=(68.9 +/- 2.0 +/- 3.2)x10(-6), B(B-0->eta(')K(0))=(67.4 +/- 3.3 +/- 3.2)x10(-6), A(ch)=0.033 +/- 0.028 +/- 0.005, S=0.30 +/- 0.14 +/- 0.02, and C=-0.21 +/- 0.10 +/- 0.02, where the first error quoted is statistical and the second is systematic.

Measurements of branching fractions and time-dependent CP-violating asymmetries in B -> eta ' K decays

ANDREOTTI, Mirco;AZZOLINI, Virginia;CALABRESE, Roberto;CIBINETTO, Gianluigi;LUPPI, Eleonora;NEGRINI, Matteo;SARTI, Alessio;
2005

Abstract

We present measurements of the B ->eta(')K branching fractions; for B+->eta(')K(+) we measure also the time-integrated charge asymmetry A(ch), and for B-0->eta(')K(S)(0) the time-dependent CP-violation parameters S and C. The data sample corresponds to 232x10(6) B (B) over bar pairs produced by e(+)e(-) annihilation at the Upsilon(4S). The results are B(B ->eta(')K(+))=(68.9 +/- 2.0 +/- 3.2)x10(-6), B(B-0->eta(')K(0))=(67.4 +/- 3.3 +/- 3.2)x10(-6), A(ch)=0.033 +/- 0.028 +/- 0.005, S=0.30 +/- 0.14 +/- 0.02, and C=-0.21 +/- 0.10 +/- 0.02, where the first error quoted is statistical and the second is systematic.
2005
Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, Jp; Poireau, V; Tisserand, V; Zghiche, A; GRAUGES POUS, E; Palano, A; Pompili, A; ...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/11392/1211470
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 36
  • ???jsp.display-item.citation.isi??? 36
social impact