Study Of The B To Xclnu Decays And Determination Of PDF Download
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| Release | : 2004 |
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Download Study of the B to Xclnu Decays and Determination of Book in PDF, ePub and Kindle
We report studies of semileptonic decays, B → X{sub c}l[nu], based on a sample of 88 million B{bar B} events recorded with the BABAR detector. We have measured four moments of the electron energy and hadronic mass distributions and determined the inclusive branching fraction, the CKM matrix element.
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| Total Pages | : 338 |
| Release | : 1966 |
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Download 青森県立青森商業高等学校六十年史 Book in PDF, ePub and Kindle
| Author | : Sheldon Stone |
| Publisher | : World Scientific |
| Total Pages | : 502 |
| Release | : 1992 |
| Genre | : Science |
| ISBN | : 9789810213305 |
Download B Decays Book in PDF, ePub and Kindle
The study of b quarks has now reached a stage where it is useful to review what has been learned so far and also to look at the implications of future studies. The most important observations thus far measurement of the B lifetime, B0 B0 mixing, and the observation of b? u transitions, as well as more mundane results on hadronic and semileptonic transitions are described in detail by experimentalists who have been closely involved with the measurements. Theoretical progress in understanding b quark decays, including the mechanisms of hadronic and semileptonic decays, are described. Synthesizing the experimental and theoretical information, the authors discuss tests of the standard model and measurements of standard model parameters. Possibilities of more extensive tests using measurement of CP violation in the B system are also addressed.
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| Total Pages | : 7 |
| Release | : 2011 |
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Download Study of B to X \gamma Decays and Determination of Book in PDF, ePub and Kindle
Using a sample of 471 million B{bar B} events collected with the BABAR detector, we study the sum of seven exclusive final states B → X{sub s(d)[gamma]}, where X{sub s(d)} is a strange (non-strange) hadronic system with a mass of up to 2.0 GeV/c2. After correcting for unobserved decay modes, we obtain a branching fraction for b → d[gamma] of (9.2 ± 2.0(stat.) ± 2.3(syst.)) x 10−6 in this mass range, and a branching fraction for b → s[gamma] of (23.0 ± 0.8(stat.) ± 3.0(syst.)) x 10−5 in the same mass range. We find [Beta](b→d[gamma])/[Beta](b→s{gamma}) = 0.040 ± 0.009(stat.) ± 0.010(syst.), from which we determine.
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| Total Pages | : 47 |
| Release | : 2011 |
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Download Study of B to Pi L Nu and B to Rho L Nu Decays and Determination of Book in PDF, ePub and Kindle
We present an analysis of exclusive charmless semileptonic B-meson decays based on 377 million B{bar B} pairs recorded with the BABAR detector at the ? (4S) resonance. We select four event samples corresponding to the decay modes B° → ?−l+?, B+ → ?°l+?, B° → ?−l+?, and B+ → ?°l+?, and find the measured branching fractions to be consistent with isospin symmetry. Assuming isospin symmetry, we combine the two B → ?l? samples, and similarly the two B → ?l? samples, and measure the branching fractions ?(B° → ?−l+?) = (1.41 ± 0.05 ± 0.07) x 10−4 and ?(B° → ?°l+?) = (1.75 ± 0.15 ± 0.27) x 10−4, where the errors are statistical and systematic. We compare the measured distribution in q2, the momentum transfer squared, with predictions for the form factors from QCD calculations and determine the CKM matrix element.
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| Total Pages | : 5 |
| Release | : 2005 |
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Download Study of Inclusive And Exclusive B ---] X/U L Nu Decays And the Measurement of Book in PDF, ePub and Kindle
We report studies of B → X{sub u}l[nu] decays, based on a sample of 88 million B{bar B} events recorded with the BABAR detector. From both tagged and untagged B{bar B} events we have isolated inclusive charmless decays in kinematic regions for which the dominant background from B → X{sub c}l[nu] is reduced by making requirements on different variables: the electron energy E{sub l}, the momentum transfer q2, and the hadronic mass m{sub X}. Using theoretical calculations we extrapolate to the total decay rate to determine the CKM matrix element.
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| Total Pages | : 5 |
| Release | : 2004 |
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Download Study of B --]ulnu-bar Decays on the Recoil of Fully Reconstructed B Mesons and Determination of Book in PDF, ePub and Kindle
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| Total Pages | : 12 |
| Release | : 2004 |
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Download Global Analysis of Inclusive B Decays Book in PDF, ePub and Kindle
In light of the large amount of new experimental data, we revisit the determination of.
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| Release | : 2004 |
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Download Study of B --]ulnu-bar Decays on the Recoil of Fully Reconstructed B Mesons and Determination of [verticalVub[vertical Book in PDF, ePub and Kindle
No abstract prepared.
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| Total Pages | : 5 |
| Release | : 2011 |
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Download Study of \Bpilnu and \Brholnu Decays and Determination of \Vub at \babar Book in PDF, ePub and Kindle
