Model Independent Results For The Decay B To L Nul Gamma At Babar PDF Download
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Total Pages | : 6 |
Release | : 2012 |
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Download Model-Independent Results for the Decay B \to L Nu(L) Gamma at BaBar Book in PDF, ePub and Kindle
We present a search for the radiative leptonic decays B+ → e?{sub e}? and B+ →?+?{sub?}? using data collected by the BABAR detector at the PEP-II B factory. We fully reconstruct the hadronic decay of one of the B mesons in?(4S) → B+B− and then search for evidence of the signal decay within the rest of the event. This method provides clean kinematic information on the signal's missing energy and high momentum photon and lepton, and allows for a model-independent analysis of this decay. Using a data sample of 465 million B-meson pairs, we obtain sensitivity to branching fractions of the same order as predicted by the Standard Model. We report a model-independent branching fraction upper limit of?(B+ → l+?{sub l}?)
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Total Pages | : 0 |
Release | : 2013 |
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Download A Model Independent Determination of the B → X8[gamma] Decay Rate Book in PDF, ePub and Kindle
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Total Pages | : 5 |
Release | : 2008 |
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Download Testing the Standard Model with Radiative Penguin Decays at BaBar Book in PDF, ePub and Kindle
The author discusses two recent results in b → s[gamma] decays from BABAR. The first is a measurement of the branching fraction and photon energy spectrum in the B meson frame of the decay B → X{sub s[gamma]}. The second result probes the photon polarization via time-dependent CP violation in neutral B decays to K*°{gamma}.
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Total Pages | : 208 |
Release | : 2013 |
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Download Search for the Inclusive B to D Gamma Decay at BaBar Book in PDF, ePub and Kindle
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Total Pages | : 9 |
Release | : 2013 |
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Download A Model Independent Determination of the B → Xsg Decay Rate Book in PDF, ePub and Kindle
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Total Pages | : 3 |
Release | : 2007 |
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Download Measurements of B to S Gamma Decays at BaBar Book in PDF, ePub and Kindle
We present measurements of the Branching Fraction and photon energy spectrum in B → X{sub S}[gamma] decays in a sample of 89 million B{bar B} pairs collected at the BABAR detector at Stanford Linear Accelerator Center's PEP-II asymmetric B-factory. Results from a fully-inclusive and a sum of 38 exclusive final states techniques are presented and found to be consistent with the Standard Model calculations, as well as experimental results obtained from semileptonic B → X{sub c}lv decays.
Author | : Deborah Joanne Bard |
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Total Pages | : 176 |
Release | : 2008 |
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Download Search for the Inclusive B->d[gamma] Decay at BABAR Book in PDF, ePub and Kindle
Author | : Deborah Bard |
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Release | : 2007 |
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Download Search for the Inclusive B->d Gamma Decay at BaBar Book in PDF, ePub and Kindle
Radiative penguin decays of B mesons are favour-changing neutral current (FCNC) processes, studies of which provide fertile ground for precision tests of the Standard Model. Because such decays must proceed through 1-loop or higher order processes, they are rare and their amplitudes are particularly sensitive to interference from other FCNC interactions beyond the SM. This thesis presents the search for the rare radiative penguin process b -> d gamma, carried out at the BABAR experiment.
Author | : Herwig Schopper |
Publisher | : Springer Nature |
Total Pages | : 632 |
Release | : 2020 |
Genre | : Heavy ions |
ISBN | : 3030382079 |
Download Particle Physics Reference Library Book in PDF, ePub and Kindle
This first open access volume of the handbook series contains articles on the standard model of particle physics, both from the theoretical and experimental perspective. It also covers related topics, such as heavy-ion physics, neutrino physics and searches for new physics beyond the standard model. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Author | : Sheldon Stone |
Publisher | : World Scientific |
Total Pages | : 676 |
Release | : 1994 |
Genre | : Science |
ISBN | : 9789810218362 |
Download B Decays Book in PDF, ePub and Kindle
This 2nd edition is an extensive update of "B Decays?. The revisions are necessary because of the extensive amount of new data and new theoretical ideas. This book reviews what is known about b-quark decays and also looks at what can be learned in the future.The importance of this research area is increasing, as evidenced by the approval of the luminosity upgrade for CESR and the asymmetric B factories at SLAC and KEK, and the possibility of experiments at hadron colliders.The key experimental observations made thus far, measurement of the lifetimes of the different B species, B0-B0 mixing, the discovery of ?Penguin? mediated decays, and the extraction of the CKM matrix elements Vub and Vcb from semileptonic decays, as well as more mundane results, are described in great detail by the experimentalists who have been closely involved with making the measurements. Theoretical progress in understanding b-quark decays using HQET and lattice gauge techniques are described by theorists who have developed and used these techniques.Synthesizing the experimental and theoretical information, several articles discuss the implications for the ?Standard Model? and how further tests can be done using measurements of CP violation in the B system.