Production and decay of Xic0 at BABAR

Details Production and decay of Xic0 at BABAR Production and decay of Xic0 at BABAR

2005-04-07

arxiv.org/abs/hep-ex/0504014v2

Phys.Rev.Lett.95:142003,2005

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 postscript figues, to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.95.142003

Using 116.1 fb^-1 of data collected by the BABAR detector, we present an analysis of Xic0 production in B decays and from the ccbar continuum, with the Xic0 decaying into Omega- K+ and Xi- pi+ final states. We measure the ratio of branching fractions B(Xic0 -> Omega- K+)/B(Xic0 -> Xi- pi+) to be 0.294 +- 0.018 +- 0.016, where the first uncertainty is statistical and the second is systematic. The Xic0 momentum spectrum is measured on and 40 MeV below the Upsilon(4S) resonance. From these spectra the branching fraction product B(B -> Xic0 X) x B(Xic0 -> Xi- pi+) is measured to be (2.11 +- 0.19 +- 0.25) x 10^-4 and the cross-section product sigma(e+ e- -> Xic0 X) x B(Xic0 -> Xi- pi+) from the continuum is measured to be (388 +- 39 +- 41) fb at a center-of-mass energy of 10.58 GeV.

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