نتایج جستجو برای: robbe
تعداد نتایج: 113 فیلتر نتایج به سال:
B. Aubert, D. Boutigny, J.-M. Gaillard, A. Hicheur, Y. Karyotakis, J.P. Lees, P. Robbe, V. Tisserand, A. Palano, G.P. Chen, J.C. Chen, N.D. Qi, G. Rong, P. Wang, Y.S. Zhu, G. Eigen, P.L. Reinertsen, B. Stugu, B. Abbott, G.S. Abrams, A.W. Borgland, A.B. Breon, D.N. Brown, J. Button-Shafer, R.N. Cahn, A.R. Clark, Q. Fan, M.S. Gill, S.J. Gowdy, A. Gritsan, Y. Groysman, R.G. Jacobsen, R.W. Kadel, J...
We present preliminary measurements of branching fractions and charge asymmetries for the B meson decays B → η(′)K∗, B → η(′)ρ, and B+ → η′π+. The data were recorded with the BABAR detector at PEP-II and correspond to 89 × 106 BB pairs produced in e+e− annihilation through the Υ (4S) resonance. We find the branching fractions B(B0 → ηK∗0) = (19.0 −2.1 ± 1.3) × 10−6, B(B+ → ηK∗+) = (25.7 −3.6±1....
We report a measurement of the rate for B → ηXs transitions where the η meson has center-ofmass momentum in the range 2.0 to 2.7GeV/c andXs represents a system comprising a kaon and up to four pions. Our study is based on 22.2 million BB pairs collected at the Υ (4S) with the BABAR detector at the Stanford Linear Accelerator Center. We find B(B → ηXs) = (6.8 −1.7(stat) ± 1.0(syst) −0.5(bkg)) × ...
We present preliminary measurements of branching fractions and charge asymmetries for the B meson decays B → η(′)K∗, B → η(′)ρ, and B+ → η′π+. The data were recorded with the BABAR detector at PEP-II and correspond to 89 × 106 BB pairs produced in e+e− annihilation through the Υ (4S) resonance. We find the branching fractions B(B0 → ηK∗0) = (19.0 −2.1 ± 1.3) × 10−6, B(B+ → ηK∗+) = (25.7 −3.6±1....
B. Aubert, D. Boutigny, J.-M. Gaillard, A. Hicheur, Y. Karyotakis, J. P. Lees, P. Robbe, V. Tisserand, A. Palano, A. Pompili, G. P. Chen, J. C. Chen, N. D. Qi, G. Rong, P. Wang, Y. S. Zhu, G. Eigen, B. Stugu, G. S. Abrams, A. W. Borgland, A. B. Breon, D. N. Brown, J. Button-Shafer, R. N. Cahn, A. R. Clark, M. S. Gill, A. V. Gritsan, Y. Groysman, R. G. Jacobsen, R. W. Kadel, J. Kadyk, L. T. Kert...
We present preliminary results of a search for B0 → K0K0 decays in the K0 S K0 S final state using a sample of approximately 23 million BB pairs collected by the BABAR detector at the PEP-II asymmetric B Factory at SLAC. We find no evidence for a signal and set an upper limit on the branching fraction of 7.3 × 10−6 at the 90% confidence level. Submitted to the 9 International Symposium on Heavy...
We present preliminary results from a search for the rare, flavor-changing neutral current decays B → Kl+l− and B → K∗l+l−, where l+l− is either an e+e− or μ+μ− pair. The data sample comprises (84.4 ± 0.9) × 106 Υ (4S) → BB decays (77.8 fb−1) collected with the BABAR detector at the PEP-II B Factory. For B → Kl+l−, we observe a signal with estimated significance of 4.4σ and obtain B(B → Kl+l−) ...
We present updated measurements of branching fractions and CP -violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 60 million Υ (4S) → BB decays collected between 1999 and 2001 by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The sample contains 124 −15 ππ, 403± 24 Kπ, ...
A preliminary study of time dependence of BB oscillations using dilepton events is presented. The avor of the B meson is determined by the charge sign of the lepton. To separate signal leptons from cascade and fake leptons we have used a method which combines several discriminating variables in a neural network. The time evolution of the oscillations is studied by reconstructing the time di ere...
We present updated measurements of branching fractions and CP -violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons. The results are obtained from a data sample of about 60 million Υ (4S) → BB decays collected between 1999 and 2001 by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. The sample contains 124 −15 ππ, 403± 24 Kπ, ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید