Constraining New Physics with Colliders and Neutrinos
May 12, 2017332 pages
Supervisor:
Thesis: PhD - Tatsu Takeuchi()
- Virginia Tech., Blacksburg
- Published: Jun 6, 2017
URN/HDL:
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Abstract: (submitter)
In this work, we examine how neutrino and collider experiments can each and together put
constraints on new physics more stringently than ever. Constraints arise in three ways. First,
possible new theoretical frameworks are reviewed and analyzed for the compatibility with
collider experiments. We study alternate theories such as the superconnection formalism and
non-commutative geometry (NCG) and show how these can be put to test, if any collider
excess were to show up. In this case, we use the previous diboson and diphoton statistical
excess as examples to do the analysis. Second, we parametrize low energy new physics in
the neutrino sector in terms of non-standard interactions (NSI), which are constrained by
past and proposed future neutrino experiments. As an example, we show the capability
of resolving such NSI with the OscSNS, a detector proposed for Oak Ridge National Lab
and derive interesting new constraints on NSI at very low energy (. 50 MeV). Apart from
this, in order to better understand the NSI matter effect in long baseline experiments such
as the future DUNE experiment, we derive a new compact formula to describe the effect
analytically, which provides a clear physical picture of our understanding of the NSI matter
effect compared to numerical computations. Last, we discuss the possibility of combining
neutrino and collider data to get a better understanding of where the new physics is hidden.
In particular, we study a model that produces sizable NSI to show how they can be constrained
by past collider data, which covers a distinct region of the model parameter space
from the DUNE experiment. In combining the two, we show that neutrino experiments are
complementary to collider searches in ruling out models such as the ones that utilize a light
mediator particle. More general procedures in constructing such models relevant to neutrino
experiments are also described.- New Physics
- Collider
- Neutrino
- Noncommutative Geometry
- geometry: noncommutative
- symmetry: left-right
- lepton: flavor: violation
- neutrino: interaction
- neutrino: oscillation
- neutrino: scattering
References(525)
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