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Study of exclusive charmless semilep...

Weinstein, Amanda Jacqueline.

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Study of exclusive charmless semileptonic decays of the B meson.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Study of exclusive charmless semileptonic decays of the B meson./
作者:	Weinstein, Amanda Jacqueline.
面頁冊數:	191 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5803.
Contained By:	Dissertation Abstracts International65-11B.
標題:	Physics, Elementary Particles and High Energy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3153112
ISBN:	9780496135578

Study of exclusive charmless semileptonic decays of the B meson.
Weinstein, Amanda Jacqueline.

Study of exclusive charmless semileptonic decays of the B meson. - 191 p.

Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5803.

Thesis (Ph.D.)--Stanford University, 2005.

In a sample of 83 x 106 BB¯ events collected by the BABAR detector, we reconstruct 310 +/- 31 B0→p-&ell;+n decays and 117 +/- 16 B+→p0&ell;+n decays. We combine the information from both channels, using isospin symmetry and the measured ratio of B lifetimes, to obtain the branching fraction BB0→p- &ell;+n=1.30 +/-0.11stat. +0.26-0.16syst. +/-FF p&ell;nx10 -4. With the large sample of BB¯ events available, the measurement is currently limited by systematic uncertainties in the description of background.

ISBN: 9780496135578Subjects--Topical Terms:

1019488
Physics, Elementary Particles and High Energy.

Study of exclusive charmless semileptonic decays of the B meson.
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100 1 $a Weinstein, Amanda Jacqueline. $3 1916699
245 1 0 $a Study of exclusive charmless semileptonic decays of the B meson.
300 $a 191 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5803.
500 $a Adviser: Jonathan Dorfan.
502 $a Thesis (Ph.D.)--Stanford University, 2005.
520 $a In a sample of 83 x 106 BB¯ events collected by the BABAR detector, we reconstruct 310 +/- 31 B0→p-&ell;+n decays and 117 +/- 16 B+→p0&ell;+n decays. We combine the information from both channels, using isospin symmetry and the measured ratio of B lifetimes, to obtain the branching fraction BB0→p- &ell;+n=1.30 +/-0.11stat. +0.26-0.16syst. +/-FF p&ell;nx10 -4. With the large sample of BB¯ events available, the measurement is currently limited by systematic uncertainties in the description of background.
520 $a Based on the light-cone sum rule (LCSR) predictions for the B→p&ell;n form-factor, we extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element Vub from the measured BB0→p- &ell;+n branching fraction, VubBall01 =&parl0;3.07+0.12-0.13sta t.+0.29-0.19 syst.+/-0.08FFp &ell;n+0.47 -0.43Gthy &parr0;x10-3. These results are consistent with, and of comparable precision to, existing measurements made using exclusively reconstructed decays, but have a substantially smaller statistical error.
590 $a School code: 0212.
650 4 $a Physics, Elementary Particles and High Energy. $3 1019488
690 $a 0798
710 2 0 $a Stanford University. $3 754827
773 0 $t Dissertation Abstracts International $g 65-11B.
790 1 0 $a Dorfan, Jonathan, $e advisor
790 $a 0212
791 $a Ph.D.
792 $a 2005
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