DOI

10.17077/etd.99kjh069

Document Type

Dissertation

Date of Degree

2007

Degree Name

PhD (Doctor of Philosophy)

Degree In

Physics

First Advisor

Mallik, Usha

First Committee Member

Mallik, Usha

Second Committee Member

Su, Dong

Third Committee Member

Kleiber, Paul D.

Fourth Committee Member

Rodgers, Vincent G.J.

Fifth Committee Member

Daughton, William

Abstract

This Thesis presents measurements of the decays \Bm\to\Xi_c^0\bar{\Lambda}_c^-, \Bzb\to\Xi_c^+\bar{\Lambda}_c^- , \Bm\to\Lambda_c^+\bar{\Lambda}_c^-\Km, and \Bzb\to\Lambda_c^+\bar{\Lambda}_c^-\Kzb based on 228 million \upsbb decays collected with the \babar\ detector at the SLAC \pep2\ asymmetric-energy \B factory. The branching fraction of \Bm\to\Lambda_c^+\bar{\Lambda}_c^-\Km is measured to be $(1.22\pm0.16\pm 0.14\pm0.63)\times 10^{-3}$, and the branching fraction of $\Bz\to\Lambda_c^+\bar{\Lambda_c^-\Kzb$ is $(0.40\pm 0.33\pm 0.05 \pm 0.21)\times 10^{-3}$. The product $\BR(\Bm\to\Xi_c^0\bar{Lambda}_c^-)\times \BR(\Xi_c^0\to\Xi^-\pi^+)$ is measured to be $(2.04\pm0.59\pm0.26\pm0.53)\times 10^{-5}$, and $\BR(\Bzb\to\Xi_c^+\bar{\Lambda}_c^-)\times\BR(\Xi_c^+\to\Xi^-\pi^+\pi^+)$ is $(1.50\pm 1.07\pm 0.19 \pm 0.39)\times 10^{-5}$, where the uncertainties are statistical, systematic, and the uncertainty from the branching fraction $\BR(\Lambda_c^+\to\proton K^-\pi^+)$, respectively.

Keywords

B meson, charmed baryon

Pages

xvii, 170 pages

Bibliography

Includes bibliographical references (pages 167-170).

Copyright

Copyright 2007 Xuedong Chai

Included in

Physics Commons

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