Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2005.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2006
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| Online Access: | http://hdl.handle.net/1721.1/35051 |
| _version_ | 1826196171171823616 |
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| author | Ptacek, Elizabeth S. (Elizabeth Sara) |
| author2 | Gabriella Sciolla. |
| author_facet | Gabriella Sciolla. Ptacek, Elizabeth S. (Elizabeth Sara) |
| author_sort | Ptacek, Elizabeth S. (Elizabeth Sara) |
| collection | MIT |
| description | Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2005. |
| first_indexed | 2024-09-23T10:22:38Z |
| format | Thesis |
| id | mit-1721.1/35051 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:22:38Z |
| publishDate | 2006 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/350512019-04-12T09:14:22Z Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays Ptacek, Elizabeth S. (Elizabeth Sara) Gabriella Sciolla. Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Dept. of Physics. Physics. Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2005. In title on t.p., "[right arrow]" is a symbol and "(sigma)" is the lower case Greek letter, subscript. Includes bibliographical references (p. 46-47). The BaBar experiment measures CP violation in the B meson system by analyzing the decays of B⁰B̄⁰ pairs in which one of the mesons decays into a CP eigenstate. By measuring the decay time distribution separately for B⁰ and B̄⁰ decays the CP violating asymmetry and sin 2[beta] can be measured. In order to measure the decay time distribution for the B⁰ and B̄⁰ decays, it is necessary to identify the flavor, or tag, of the second B meson. The flavor of the B meson is identified by an algorithm which analyzes physical processes which carry flavor information from its decay. Analyzing new physical processes could potentially improve the efficiency of the tagging algorithm. I tested the effect of adding subtaggers which estimated the flavor of the tag B based on the flavor or the charge of its D⁰ or Ds daughters. However due to the low yields and high backgrounds of reconstructed D⁰ and Ds candidates, these subtaggers were not effective at making a net contribution to the tagging process. by Elizabeth S. Ptacek. S.B. 2006-12-18T19:59:42Z 2006-12-18T19:59:42Z 2005 2005 Thesis http://hdl.handle.net/1721.1/35051 69691095 eng 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. http://dspace.mit.edu/handle/1721.1/7582 53 p. 2535879 bytes 2536700 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Ptacek, Elizabeth S. (Elizabeth Sara) Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays |
| title | Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays |
| title_full | Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays |
| title_fullStr | Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays |
| title_full_unstemmed | Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays |
| title_short | Study of flavor tagging with semi-exclusive reconstruction of b [right arrow] D(sigma)X decays |
| title_sort | study of flavor tagging with semi exclusive reconstruction of b right arrow d sigma x decays |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/35051 |
| work_keys_str_mv | AT ptacekelizabethselizabethsara studyofflavortaggingwithsemiexclusivereconstructionofbrightarrowdsigmaxdecays |