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Showing 1 to 8 of 8 for “"BABAR-Experiment"”.
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Search for the Decay B0 -> eta phi at the BABAR Experiment
… is based on 86 x 10^6 BB pairs recorded by the BABAR experiment at the Stanford Linear Accelerator Center between 1999 and 2002. phi mesons are reconstructed in the channel phi -> K+ K-. eta mesons are reconstructed in the channels eta -> gamma gamma and eta -> pi+ pi- pi0. Signal …
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Measurements of B(Ds -> lvl) and fDs using data collected from the BaBar experiment
… fDs , using all the data acquired at the BaBar detector at SLAC National Accelerator Laboratory, which were collected from September 1999 to April 2007, and comprised 531 fb-1. The following mea- surements are made: B(Ds -> eve) = (6:11 +/-0:38 +/- 0:33) * 10-3, B(Ds -> tvt) = (5:06 +/- …
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Electron Identification and Measurement of the Inclusive Semileptonic Branching Fraction of B Mesons at the BABAR Experiment
… zur Identifizierung von Elektronen mit dem BABAR Detektor wird entwickelt. Basierend auf Spuren, deren Teilchenidentität aus rein kinematischen Überlegungen gefolgert werden kann, wird für Impulse zwischen 0.5 und 2.5 GeV/c die Selektionseffizienz für Elektronen zu 90% bestimmt. Im gleichen …
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Measurement of the Partial Widths Ratio Gamma(Ds*+ -> Ds+ pi0) / Gamma(Ds*+ -> Ds+ gamma) at the BABAR Experiment
Unter Benutzng von 90.4/fb Daten, die das BABAR-Experiment in den Jahren 1999 bis 2002 genommen hat, wurden die Zerfälle Ds*+ -> Ds+ pi0 und Ds*+ -> Ds+ gamma mit zwei verschiedenen Methoden rekonstruiert. Die Rekonstruktions-Effizienzen wurden mittels Signal-Monte Carlo-Ereignissen und …
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Search For Cp Violation In Singly Cabibbo-Suppressed Charm Decays
… been observed in the Charm sector; however, the BaBar experiment now has extremely large data samples of charged D mesons which may have the sensitivity to make such a measurement. The CP asymmetry will be measured by studying the asymmetry of the Dalitz plot for $D^{+}$ and $D^{-}$. A fit of the …
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Untersuchung neutraler pi-Mesonen mit dem elektromagnetischen Kalorimeter des BABAR-Detektors
… of the electromagnetic calorimeter of the BABAR experiment will be introduced. Additionally a method was developed to take into account the different energy losses between the edges and centres of the crystals. An improvement of the energy resolution of photons was achieved by 15%, …
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Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays
The BaBar experiment measures CP violation in the B meson system by analyzing the decays of B⁰B̄⁰ pairs in which one of the mesons decays into a CP eigenstate. By measuring the decay time distribution separately for B⁰ and B̄⁰ decays the CP violating asymmetry and sin 2[beta] can be measured. In …
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Measurement and Interpretation of Moments of the Combined Hadronic Mass and Energy Spectrum in Inclusive Semileptonic B-meson Decays
… Y(4S) -> B\bar{B} events recorded with the BABAR experiment at the PEP-II e+e--storage rings at SLAC. We reconstruct the semileptonic decay by identifying a charged lepton in events tagged by a fully reconstructed hadronic decay of the second B meson. Correction procedures are derived from …