|
|
Type of Document Dissertation Author Pogorelov, Yury Author's Email Address ypogorel@nd.edu URN etd-07192007-233028 Title A Search for the Associated Higgs Production in the Tau Channel Degree Doctor of Philosophy Department Physics Advisory Committee
Advisor Name Title Dr. Hsueh-Chia Chang Committee Chair Dr. Neal Cason Committee Co-Chair Dr. Christopher Kolda Committee Co-Chair Dr. Dinshaw Balsara Committee Co-Chair Anna Goussiou Committee Member Dr. Randal Ruchti Committee Member Keywords
- tau
- d0
- associated
- Higgs production
Date of Defense 2007-06-28 Availability unrestricted Abstract A search for the production of neutral Higgs bosons in association with bottomquarks in p¯p collisions at √s = 1.96 TeV is presented. The cross section for this
process is enhanced in many extensions of the Standard Model (SM), such as in its
Minimal Supersymmetric extension (MSSM) at large tan . The search is performed
using the decay of the Higgs boson into two tau-leptons. The data, corresponding to
a recorded integrated luminosity of 400 pb−1, were collected with the DØ detector
at the Fermilab Tevatron Collider. The results provide an upper limit for the production
cross section of neutral Higgs bosons in the mass range of 90 to 150 GeV,
and are interpreted in the MSSM. This cross section limit is comparable with the
one obtained previously using the decay of the Higgs into two b-quarks, despite the
1:9 branching ratio of the tau-tau to bb decay modes.
Files
Filename Size Approximate Download Time (Hours:Minutes:Seconds)
28.8 Modem 56K Modem ISDN (64 Kb) ISDN (128 Kb) Higher-speed Access PogorelovY062007.pdf 2.74 Mb 00:12:41 00:06:31 00:05:42 00:02:51 00:00:14