Alexandria Digital Research Library

The Flavor Problem from Strings to the LHC

Author:
Perkins, Erik A.
Degree Grantor:
University of California, Santa Barbara. Physics
Degree Supervisor:
David Berenstein
Place of Publication:
[Santa Barbara, Calif.]
Publisher:
University of California, Santa Barbara
Creation Date:
2013
Issued Date:
2013
Topics:
Physics, Elementary Particles and High Energy and Physics, Theory
Keywords:
Froggat-nielsen
B-jet
Lhc
Higgs
Axion
Genres:
Dissertations, Academic and Online resources
Dissertation:
Ph.D.--University of California, Santa Barbara, 2013
Description:

The problem of mass hierarchies has remained one of the most persistent open questions in elementary particle physics. The author's contributions to this problem, detailed in this thesis, consist of addressing the appearance of low-scale axions in string-implemented models of flavor hierarchies, and of using the flavor hierarchies present in natural supersymmetry to develop methods for studying properties of the standard-model-like Higgs boson at the LHC. We find string-motivated models of mass hierarchies which have safe QCD axions at low scales arising from a combination of the Green-Schwarz and Froggatt-Nielsen mechanisms. Supersymmetric extensions of these setups can lead to scenarios of `natural' supersymmetry, where the sparticles which have the largest couplings to the Higgs are the lightest. This leads us to exploit this feature in studying properties of the Higgs at the LHC. We find that it can be reconstructed as a resonance in the bottom dijet channel, and measurements of its branching ratios can be made with minimal backgrounds.

Physical Description:
1 online resource (169 pages)
Format:
Text
Collection(s):
UCSB electronic theses and dissertations
ARK:
ark:/48907/f38p5xhz
ISBN:
9781303426643
Catalog System Number:
990040770820203776
Rights:
Inc.icon only.dark In Copyright
Copyright Holder:
Erik Perkins
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