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EnglishWith a sample of 232x10(6) Upsilon(4S)-> B (B) over bar events collected with the BABAR detector, we study the decays of B mesons to p (p) over barh final states, where h=pi(+), K(S)(0), K*(0), or K*(+). We report evidence for the B(0)-> p (p) over barK(*0) decay, with a branching fraction (1.47 +/- 0.45(stat)+/- 0.40(syst))x10(-6), and for the B(+)->eta(c)K*(+) decay, with the branching fraction of B(B(+)->eta(c)K*(+))xB(eta(c)-> p (p) over bar)=(1.57(-0.45)(+0.56)(stat)(-0.36)(+0.46)(syst))x10(-6), and provide improved measurements of the branching fractions of the other modes of this type. We also report the measurements of the charge asymmetry consistent with zero in the B(+)-> p (p) over bar pi(+), B(0)-> p (p) over barK*(0), and B(+)-> p (p) over barK*(+) modes. No evidence is found for the pentaquark candidate Theta(+) in the mass range 1.52 to 1.55 GeV/c(2), decaying into pK(S)(0), or the glueball candidate f(J)(2220) in the mass range 2.2 < m(p (p) over bar)< 2.4 GeV/c(2), and branching fraction limits are established for both at the 10(-7) level.
| Titolo: | Evidence for the B(0)-> p(p)over-barK*(0) and B(+)->eta(c)K*(+) decays and study of the decay dynamics of B meson decays into p(p)over-barh final states RID C-5223-2009 RID C-5719-2008 RID D-1055-2009 |
| Autori: | |
| Data di pubblicazione: | 2007 |
| Rivista: | |
| Abstract: | With a sample of 232x10(6) Upsilon(4S)-> B (B) over bar events collected with the BABAR detector, we study the decays of B mesons to p (p) over barh final states, where h=pi(+), K(S)(0), K*(0), or K*(+). We report evidence for the B(0)-> p (p) over barK(*0) decay, with a branching fraction (1.47 +/- 0.45(stat)+/- 0.40(syst))x10(-6), and for the B(+)->eta(c)K*(+) decay, with the branching fraction of B(B(+)->eta(c)K*(+))xB(eta(c)-> p (p) over bar)=(1.57(-0.45)(+0.56)(stat)(-0.36)(+0.46)(syst))x10(-6), and provide improved measurements of the branching fractions of the other modes of this type. We also report the measurements of the charge asymmetry consistent with zero in the B(+)-> p (p) over bar pi(+), B(0)-> p (p) over barK*(0), and B(+)-> p (p) over barK*(+) modes. No evidence is found for the pentaquark candidate Theta(+) in the mass range 1.52 to 1.55 GeV/c(2), decaying into pK(S)(0), or the glueball candidate f(J)(2220) in the mass range 2.2 < m(p (p) over bar)< 2.4 GeV/c(2), and branching fraction limits are established for both at the 10(-7) level. |
| Handle: | http://hdl.handle.net/11384/5273 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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