We study the two-body decays of B+/- mesons to K+/- and a charmonium state X-c(c) over bar in a sample of 210.5 fb(-1) of data from the BABAR experiment. We perform measurements of absolute branching fractions B(B+/- -> K+/-Xc(c) over bar) using a missing mass technique, and report several new or improved results. In particular, the upper limit B(B+/- -> K+/-X(3872)) < 3.2 x 10(-4) at 90% C.L. and the inferred lower limit B(X(3872) -> J/psi pi(+)pi(-)) > 4.2% will help in understanding the nature of the recently discovered X(3872).
Titolo: | Measurements of the absolute branching fractions of B-+/--> K-+/- Xc(c)over-bar-$ RID A-8798-2012 RID C-2728-2008 RID C-5223-2009 RID C-5719-2008 RID D-1055-2009 | |
Autori: | ||
Data di pubblicazione: | 2006 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.96.052002 | |
Handle: | http://hdl.handle.net/11384/4737 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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