We report a measurement of the branching fraction of the decay B 0rarrD* +D* - and of the CP-odd component of its final state using the BABAR detector. With data corresponding to an integrated luminosity of 20.4 fb -1 collected at the Upsi(4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B 0rarrD* +D* - with an estimated background of 6.2plusmn0.5 events. From these events, we determine the branching fraction to be B(B 0rarrD* +D* - )=[8.3plusmn1.6(stat)plusmn1.2(syst)] times10 -4. The measured CP-odd fraction of the final state is 0.22plusmn0.18(stat)plusmn0.03(syst)
Measurement of the branching fraction and CP content for the decay B 0rarrD* +D* $
ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;TRIGGIANI, GIUSEPPE;CALDERINI, GIOVANNI;
2002-01-01
Abstract
We report a measurement of the branching fraction of the decay B 0rarrD* +D* - and of the CP-odd component of its final state using the BABAR detector. With data corresponding to an integrated luminosity of 20.4 fb -1 collected at the Upsi(4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B 0rarrD* +D* - with an estimated background of 6.2plusmn0.5 events. From these events, we determine the branching fraction to be B(B 0rarrD* +D* - )=[8.3plusmn1.6(stat)plusmn1.2(syst)] times10 -4. The measured CP-odd fraction of the final state is 0.22plusmn0.18(stat)plusmn0.03(syst)File in questo prodotto:
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