Measurement of CP Parameters in B -] D_1hn0_1tnC_1tnP_1tn+_1tnK Decays with the BABAR Detector
Title | Measurement of CP Parameters in B -] D_1hn0_1tnC_1tnP_1tn+_1tnK Decays with the BABAR Detector PDF eBook |
Author | Till Moritz Karbach |
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Release | 2009 |
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Measurements of Time-Dependent CP Violation in Radiative B Decays at BaBar
Title | Measurements of Time-Dependent CP Violation in Radiative B Decays at BaBar PDF eBook |
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Pages | 4 |
Release | 2009 |
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The authors present measurements of the CP-violation parameters S and C for the radiative decays B° →?°K{sub S}°? and B° →?K{sub S}°?; for B →?K? they also measure the branching fractions and for B →?K+? the time-integrated charge asymmetry A{sub ch}. The data, collected with the BABAR detector at the SLAC National Accelerator Laboratory, represent 467 x 106 B{bar B} pairs produced in e+e− annihilation at the PEP-II collider. In this summary they present an updated measurement of the time-dependent CP asymmetry in B° →?°K{sub S}°? decay mode and the first measurement of the time-dependent CP asymmetry in B° →?K{sub S}°? decay mode. Hadronic corrections in B° →?°K{sub S}°? decay mode might permit S to be as large as ± 0.1. Such corrections and NP effects could depend on m(?°K{sub S}°), so they split the data into two parts: the K*(892) region with 0.8
Measurement of CP Violation Parameters in B - Ccd Exclusive Decays at the BABAR Experiment
Title | Measurement of CP Violation Parameters in B - Ccd Exclusive Decays at the BABAR Experiment PDF eBook |
Author | Justin E. Albert |
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Pages | 564 |
Release | 2002 |
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A Measurement of the CP Parameter Sin2β Using Fully Reconstructed B -> Cc̄ Decays at the BaBar Experiment
Title | A Measurement of the CP Parameter Sin2β Using Fully Reconstructed B -> Cc̄ Decays at the BaBar Experiment PDF eBook |
Author | Eric Charles |
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Pages | 304 |
Release | 2002 |
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Measurement of CP Parameters in B- --] D(pi+pi-pi0)K- and Study of the X(3872) in B --] J/psi Pi+ Pi- K with the BaBar Detector
Title | Measurement of CP Parameters in B- --] D(pi+pi-pi0)K- and Study of the X(3872) in B --] J/psi Pi+ Pi- K with the BaBar Detector PDF eBook |
Author | Frank Winklmeier |
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Pages | 219 |
Release | 2006 |
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This dissertation presents two analyses performed on data collected with the BABAR detector at the SLAC PEP-II e{sup +}e{sup -} asymmetric-energy B Factory. First, a Dalitz analysis is shown that performs the first measurement of CP violation parameters in the decay B{sup -} {yields} D{sub {pi}{sup +}{pi}{sup -}{pi}{sup 0}}K{sup -} using the decay rate asymmetry and D{sup 0} - {bar D}{sup 0} interference. The results can be used to further constrain the value of the CKM angle {gamma}. The second analysis studies the properties of the X(3872) in neutral and charged B {yields} J/{psi}{pi}{sup +}{pi}{sup -}K decays. Measurements of the branching ratio and mass are presented as well as the search for additional resonances at higher masses.
Measurement of CP Violation Parameters in B Quark Decays to Charm Anticharm Down Quarks, Exclusive Decays at the BABAR Experiment
Title | Measurement of CP Violation Parameters in B Quark Decays to Charm Anticharm Down Quarks, Exclusive Decays at the BABAR Experiment PDF eBook |
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Pages | 5 |
Release | 2003 |
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The BABAR experiment at SLAC provides an opportunity for measurement of CP violation in B decays. A measurement of time-dependent CP violating asymmetries using exclusive B meson decays where the b quark decays to c{bar c}d (including B° 2!D*D*− and B° 2!D*{sup ±}D{sup {-+}} decays) is presented here. This is the first measurement of CP violation in a mode sensitive to the Unitarity Triangle parameter sin2[beta] outside of decays containing charmonium. It provides a comparison to measurements of sin2[beta] using b 2!c{bar c}s, and permits an observation into potential new physics sources of CP violation, such as supersymmetry, via differences between these measurements and those of B° 2!J/[psi] K{sub S}° as statistics of reconstructed neutral B decays to D{sup (*)+} D{sup (*)-} increase. The measured value of the time-dependent CP violating asymmetries are: S = 0.38 ± 0.88(stat) ± 0.12(syst) and C = -0.30 ± 0.50(stat) ± 0.13(syst) for B° 2!D*− D; S = -0.43 ± 1.41(stat) ± 0.23(syst) and C = 0.53 ± 0.74(stat) ± 0.15(syst) for B° 2!D*+ D−; and S = -0.05 ± 0.45(stat) ± 0.05(syst) and C = 0.12 ± 0.30(stat) {+-} 0.05(syst) for B° 2!D*− D+; where S corresponds to CP violation in the interference of mixing and decay and C corresponds to CP violation in decay.
New Measurements of CP Violation in B0 to Ccbar K*(0) Decays from Babar
Title | New Measurements of CP Violation in B0 to Ccbar K*(0) Decays from Babar PDF eBook |
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Release | 2005 |
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We present new measurements of CP asymmetries in B° → (c{bar c})K{sup 0(*)} decays recorded by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC between 1999 and 2004. We determine sin2[beta] from decay-time distributions of 7730 signal events in a data sample of approximately 227 x 106 [Upsilon](4S) → B{bar B} decays. The measured value of sin2[beta] = 0.722 ± 0.040(stat) ± 0.023(syst) is in agreement with the value expected from the Standard Model. In a separate time-dependent angular analysis of B → J/[psi] K*° (K*° → K{sub S}°[pi]°) decays we measure cos 2[beta] to be positive at 86% CL.