| dc.contributor.advisor | Gabriella Sciolla. | en_US |
| dc.contributor.author | Zhao, Minliang | en_US |
| dc.contributor.other | Massachusetts Institute of Technology. Dept. of Physics. | en_US |
| dc.date.accessioned | 2009-08-25T18:01:23Z | |
| dc.date.available | 2009-08-25T18:01:23Z | |
| dc.date.copyright | 2008 | en_US |
| dc.date.issued | 2008 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1721.1/46386 | |
| dc.description | Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2008. | en_US |
| dc.description | This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. | en_US |
| dc.description | In title on title page,"[ beta]", "[sigma]" and "[gamma]" appear as lower case Greek letters and "-->" appears as a right arrow. | en_US |
| dc.description | Includes bibliographical references (leaves 133-136). | en_US |
| dc.description.abstract | In this thesis, I describe a study of the CP asymmetry in [beta] --> [sigma] [gamma] decays. This CP asymmetry is expected to be less than 0.01 in the Standard Model, but could be enhanced up to the order of 0.10 by non-Standard Model contributions. We use a sample of 383 x 106 BB events collected by the BABAR detector at the PEP-II asymmetric B factory and reconstruct sixteen flavor-specific B decay modes containing a high energy photon and a hadronic Xs system. We measure the CP asymmetry to be -0.011 ± 0.030stat ± 0.014syst for a photon energy threshold at 1.6 GeV and the hadronic system mass between 0.6 and 2.8 GeV/c2. | en_US |
| dc.description.statementofresponsibility | by Minliang Zhao. | en_US |
| dc.format.extent | 136 leaves | en_US |
| dc.language.iso | eng | en_US |
| dc.publisher | Massachusetts Institute of Technology | en_US |
| dc.rights | M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission. | en_US |
| dc.rights.uri | http://dspace.mit.edu/handle/1721.1/7582 | en_US |
| dc.subject | Physics. | en_US |
| dc.title | Measurement of CP asymmetry in [beta] --> [sigma] [gamma] decays using a sum of exclusive final states | en_US |
| dc.type | Thesis | en_US |
| dc.description.degree | Ph.D. | en_US |
| dc.contributor.department | Massachusetts Institute of Technology. Department of Physics | |
| dc.identifier.oclc | 427543177 | en_US |
