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Elementary Particles and Fields and String Theory

SelectedWorks

2005

Articles 1 - 3 of 3

Full-Text Articles in Physics

Five Dimensional 2-Branes From Special Lagrangian Wrapped M5-Branes, Moataz Emam Jan 2005

Five Dimensional 2-Branes From Special Lagrangian Wrapped M5-Branes, Moataz Emam

Moataz Emam

No abstract provided.


Measurement Of Cp Asymmetries In B0 --> KS000, B. Aubert, Stefan Spanier Jan 2005

Measurement Of Cp Asymmetries In B0 --> KS0∏0∏0, B. Aubert, Stefan Spanier

stefan spanier

We present a preliminary measurement of the time-dependent CP asymmetry for the neutral B-meson decay into the CP = +1 final state K0 Sπ0π0, with K0 S → π+π− and π0 → γγ. We use a sample of approximately 227 million B-meson pairs recorded at the Υ(4S) resonance by the BABAR detector at the PEP-II B-Factory at SLAC. From a maximum likelihood fit we extract the mixing-induced CP-violation parameter SK0 Sπ0π0 = 0.84 ± 0.71 (stat) ± 0.08 (syst) and the direct CP-violation parameter CK0 Sπ0π0 = 0.27 ± 0.52 (stat) ± 0.13 (syst), where the first uncertainty is statistical …


Measurement Of Cp Asymmetries In B0 --> {Eff}K0 And B0 --> K+K-K0S Decays, B. Aubert, Stefan Spanier Jan 2005

Measurement Of Cp Asymmetries In B0 --> {Eff}K0 And B0 --> K+K-K0S Decays, B. Aubert, Stefan Spanier

stefan spanier

We measure the time-dependent CP asymmetry parameters in B0 --> K+ K- K0 based on a data sample of approximately 227 million B-meson pairs recorded at the Upsilon(4S) resonance with the BaBar detector at the PEP-II B-meson Factory at SLAC. We reconstruct two-body B0 decays to Phi(1020) K0S and Phi(1020)K0L, and the three-body decay K+ K- K0S with Phi(1020) K0S excluded. For the B0 --> Phi K0 decays, we measure sin(2 beta_{eff})(Phi K0) = +0.50 +/- 0.25(stat) +0.07/-0.04(syst). The B0 --> K+ K- K0S decays are dominated by K+ K- S-wave, as determined from an angular analysis; we measure sin(2 …