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Measurement of inclusive radiative B...

Ozcan, Veysi Erkcan.

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Measurement of inclusive radiative B-meson decay B decaying to X(S) meson-gamma.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Measurement of inclusive radiative B-meson decay B decaying to X(S) meson-gamma./
作者:	Ozcan, Veysi Erkcan.
面頁冊數:	186 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 6041.
Contained By:	Dissertation Abstracts International66-11B.
標題:	Physics, Elementary Particles and High Energy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3197492
ISBN:	9780542431906

Measurement of inclusive radiative B-meson decay B decaying to X(S) meson-gamma.
Ozcan, Veysi Erkcan.

Measurement of inclusive radiative B-meson decay B decaying to X(S) meson-gamma. - 186 p.

Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 6041.

Thesis (Ph.D.)--Stanford University, 2006.

Radiative decays of the B meson, B→ Xsgamma, 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.

ISBN: 9780542431906Subjects--Topical Terms:

1019488
Physics, Elementary Particles and High Energy.

Measurement of inclusive radiative B-meson decay B decaying to X(S) meson-gamma.
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245 1 0 $a Measurement of inclusive radiative B-meson decay B decaying to X(S) meson-gamma.
300 $a 186 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-11, Section: B, page: 6041.
500 $a Adviser: Vera Luth.
502 $a Thesis (Ph.D.)--Stanford University, 2006.
520 $a Radiative decays of the B meson, B→ Xsgamma, 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.
520 $a The analysis of the inclusive photon spectrum from B→ Xsgamma decays is rather challenging due to high backgrounds from photons emitted in the decay of mesons in B decays as well as e+e- annihilation to low mass quark and lepton pairs. Based on 88.5 million BB 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: mb=4.45+/-0.16 GeV/c2m2 p=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 Vub.
520 $a Based on these parameters and heavy quark expansion, the full branching fraction is obtained as: BRB→X sgEg >1.6GeV=4.050.32 stat+/-0.38syst +/-0.29model x10-4. This result is in good agreement with previous measurements, the statistical and systematic errors are comparable. It is also in good agreement with the theoretical Standard Model predictions, and thus within the present errors there is no indication of any interactions not accounted for in the Standard Model. This finding implies strong constraints on physics beyond the Standard Model.
590 $a School code: 0212.
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