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Estimates Of The Weak Annihilation Contributions To The Decays B Pi Gamma And B Omega Gamma
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Book Synopsis Estimates of the weak annihilation contributions to the decays B → π [pi] + γ [gamma] and B → ω [omega] + γ [gamma] by : A. Ali
Download or read book Estimates of the weak annihilation contributions to the decays B → π [pi] + γ [gamma] and B → ω [omega] + γ [gamma] written by A. Ali and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimates of the weak annihilation contributions to the decays B → _p63 [pi] + _g63 [gamma] and B → _w63 [omega] + _g63 [gamma] by : Ahmed Ali
Download or read book Estimates of the weak annihilation contributions to the decays B → _p63 [pi] + _g63 [gamma] and B → _w63 [omega] + _g63 [gamma] written by Ahmed Ali and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimates of the Weak Annihilation Contributions to the Decays B → [rho] + [gamma] and B → [omega] + [gamma] by :
Download or read book Estimates of the Weak Annihilation Contributions to the Decays B → [rho] + [gamma] and B → [omega] + [gamma] written by and published by . This book was released on 1998 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Terms and Conditions of Grants of Agricultural Crown Lands by :
Download or read book Terms and Conditions of Grants of Agricultural Crown Lands written by and published by . This book was released on 1935 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimates of the Weak Annihilation Contributions to the Decays B → P + [gamma] and B → W + [gamma] by : A. Ali
Download or read book Estimates of the Weak Annihilation Contributions to the Decays B → P + [gamma] and B → W + [gamma] written by A. Ali and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Model-independent Information on Gamma from B[sup[+-] --] Pi K Decays by :
Download or read book Model-independent Information on Gamma from B[sup[+-] --] Pi K Decays written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the rates for the hadronic decays B[sup[+-]][yields][pi]K can be used to derive information on the weak phase= arg(V*[sub ub]) in a largely model-independent way. Hadronic uncertainties can be reduced to the level of nonfactorizable contributions to the decay amplitudes that are power-suppressed in[Lambda]/m[sub b] and, in addition, either violate SU(3) flavor symmetry or are doubly Cabibbo suppressed. Various strategies to obtain bounds on and to extract its value with small theoretical uncertainty are described. The potential of B[sup[+-]][yields][pi]K decays for probing physics beyond the Standard Model is also discussed.
Download or read book High Energy Physics Index written by and published by . This book was released on 1991 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of B -] V Gamma Decays by :
Download or read book Measurements of B -] V Gamma Decays written by and published by . This book was released on 2010 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: The standard model has been highly successful at describing current experimental data. However, extensions of the standard model predict particles that have masses at energy scales that are above the electroweak scale. The flavor-changing neutral current processes of the B meson are sensitive to the influences of these new physics contributions. These processes proceed through loop diagrams, thus allowing new physics to enter at the same order as the standard model. New physics may contribute to the enhancement or suppression of rate asymmetries or the decay rates of these processes. The transition B → V[gamma] (V = K*(892), [rho](770), [omega](782), [phi](1020)) represents radiative decays of the B meson that proceed through penguin processes. Hadronic uncertainties limit the theoretical accuracy of the prediction of the branching fractions. However, uncertainties, both theoretical and experimental, are much reduced when considering quantities involving ratios of branching fractions, such as CP or isospin asymmetries. The most dominant exclusive radiative b → s transition is B → K*[gamma]. We present the best measurements of the branching fractions, direct CP, and isospin asymmetries of B → K*[gamma]. The analogous b → d transitions are B → [rho][gamma] and B → [omega][gamma], which are suppressed by a factor of.
Book Synopsis Measurements of B -] V Gamma Decays by : Aaron Kevin Yarritu
Download or read book Measurements of B -] V Gamma Decays written by Aaron Kevin Yarritu and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Observational evidence and theoretical motivation have led us to the conclusion that our current understanding of the universe is incomplete. While new physics is expected to exist above the electroweak scale, its influence can be detected by experiments that operate below this scale. The Babar experiment has recorded approximately 432 fb-1 of data at the center of mass energy of 10.58 GeV, which corresponds to the Y(4S) mass. One of the physics programs is studying radiative decays of the B meson. These decays primarily proceed through loop diagrams, and thus influences of new particles may be detectable. In this thesis, I present results of the measurements of the branching fractions, CP asymmetry, and isospin asymmetry of B -> K* gamma. Results are also presented for the measurements of the branching fractions of B -> rho(omega) gamma. Finally, a search for the decay of B -> phi gamma is given.
Download or read book Catholicon français ... written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for B to Rho/omega Gamma Decays at BaBar by :
Download or read book Search for B to Rho/omega Gamma Decays at BaBar written by and published by . This book was released on 2008 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the results of the search for the decays B°±} → [rho]°±}[gamma] (previously observed) and B° → [omega][gamma] (for which currently only an upper limit exists). Together with B → K*[gamma] decays, B → ([rho]/[omega])[gamma] allow us to measure the ratio of CKM-matrix elements.
Book Synopsis Search for the Radiative Decay B0 to Phi Gamma by :
Download or read book Search for the Radiative Decay B0 to Phi Gamma written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We perform a search for the exclusive radiative decay B° 2![phi][gamma], which is dominated by {bar b}d annihilation, in a sample of 124 million B{bar B} events collected with the BABAR detector at the PEP-II asymmetric-energy ee− storage ring at SLAC. No significant signal is seen. We set an upper limit on the branching fraction of [Beta](B° 2![phi][gamma])
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-10 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Inclusive Radiative B -Meson Decay B -] X_s Gamma by :
Download or read book Measurement of Inclusive Radiative B -Meson Decay B -] X_s Gamma written by and published by . This book was released on 2006 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiative decays of the B meson, B 2!X{sub s}[gamma], proceed via virtual flavor changing neutral current processes that are sensitive to contributions from high mass scales, either within the Standard Model of electroweak interactions or beyond. In the Standard Model, these transitions are sensitive to the weak interactions of the top quark, and relatively robust predictions of the inclusive decay rate exist. Significant deviation from these predictions could be interpreted as indications for processes not included in the minimal Standard Model, like interactions of charged Higgs or SUSY particles. The analysis of the inclusive photon spectrum from B 2!X{sub s}[gamma] decays is rather challenging due to high backgrounds from photons emitted in the decay of mesons in B decays as well as ee− annihilation to low mass quark and lepton pairs. Based on 88.5 million B{bar B} events collected by the BABAR detector, the photon spectrum above 1.9 GeV is presented. By comparison of the first and second moments of the photon spectrum with QCD predictions (calculated in the kinetic scheme), QCD parameters describing the bound state of the b quark in the B meson are extracted: m{sub b} = (4.45 ± 0.16) GeV/c2; [mu]{sub {pi}}2 = (0.65 ± 0.29) GeV2. These parameters are useful input to non-perturbative QCD corrections to the semileptonic B decay rate and the determination of the CKM parameter.
Book Synopsis B Meson Decays to Mega K*, Omega Rho, Omega Omega, Omega Phi, and Omega F0 by : J. C. Chen
Download or read book B Meson Decays to Mega K*, Omega Rho, Omega Omega, Omega Phi, and Omega F0 written by J. C. Chen and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors describe searches for B meson decays to the charmless vector-vector final states {omega}K*, {omega}p, {omega}{omega}, and {omega}{phi} with 233 x 10{sup 6} B{bar B} pairs produced in e{sup +}e{sup -} annihilation at {radical}s = 10.58 GeV. They also search for the vector-scalar B decay to {omega}f{sub 0}.
Book Synopsis Measurement of B Decays to Phi K Gamma by : B. Aubert
Download or read book Measurement of B Decays to Phi K Gamma written by B. Aubert and published by . This book was released on 2006 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We measure the branching fraction of the radiative B{sup -} decay {Beta}(B{sup -} {yields} {phi}K{sup -}{gamma}) = (3.46 {+-} 0.57{sub -0.37}{sup +0.39}) x 10{sup -6}, and set an upper limit on the radiative {bar B}{sup 0} decay {Beta}({bar B}{sup 0} {yields} {phi}{bar K}{sup 0}{gamma})