Measurements of the decays B0→D̄0pp̄, B0→D̄* 0pp̄, B0→D-pp̄π+, and B0→D*-pp̄π+

Measurements of the decays B0→D̄0pp̄, B0→D̄* 0pp̄, B0→D-pp̄π+, and B0→D*-pp̄π+

We present measurements of branching fractions of B0 decays to multibody final states containing protons, based on 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We measure the branching fractions B(B0→D̄0pp̄)=(1. 13±0.06±0.08)×10-4, B(B0→D...

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Մատենագիտական մանրամասներ
Հիմնական հեղինակներ: Aubert, B, Barate, R, Bona, M, Boutigny, D, Couderc, F, Karyotakis, Y, Lees, J, Poireau, V, Tisserand, V, Zghiche, A, Grauges, E, Palano, A, Pappagallo, M, Chen, J, Qi, N, Rong, G, Wang, P, Zhu, Y, Eigen, G, Ofte, I, Stugu, B, Abrams, G, Battaglia, M, Brown, D, Button-Shafer, J
Ձևաչափ: Journal article
Լեզու:English
Հրապարակվել է: 2006
Նկարագրություն
Ամփոփում:We present measurements of branching fractions of B0 decays to multibody final states containing protons, based on 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. We measure the branching fractions B(B0→D̄0pp̄)=(1. 13±0.06±0.08)×10-4, B(B0→D̄*0pp̄)=(1. 01±0.10±0.09)×10-4, B(B0→D-pp̄π+)=(3. 38±0.14±0.29)×10-4, and B(B0→D*-pp̄π+)= (4.81±0.22±0.44)×10-4 where the first error is statistical and the second systematic. We present a search for the charmed pentaquark state, Θc(3100) observed by H1 and put limits on the branching fraction B(B0→Θcp̄π+)×B(Θc→D*-p) <14×10-6 and B(B0→Θcp̄π+)×B(Θc→D-p) <9×10-6. Upon investigation of the decay structure of the above four B0 decay modes, we see an enhancement at low pp̄ mass and deviations from phase-space in the D̄p̄ and D̄p invariant mass spectra. © 2006 The American Physical Society.

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