Persistent Link:
http://hdl.handle.net/10150/195012
Title:
Probing Supersymmetry with Cosmogenic Neutrinos
Author:
Uscinski, Jessica
Issue Date:
2008
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Neutrino telescopes have the potential to detect quasi-stable supersymmetric staus predicted by some supersymmetric models. A study of the signal for the detection of staus produced in interactions of cosmogenic neutrinos is presented. The detection depends on the stau electromagnetic energy loss and weak interactions. The results for the weak interaction contribution to the energy loss of high energy staus as they pass through rock is presented. The neutral current weak interaction contribution is much smaller than photonuclear energy loss, however, the charged current contribution may become the dominant process for energies above 10^9GeV. As a consequence, the stau range may be reduced above 10^9 GeV as compared to the range neglecting weak interactions.A detailed analysis of the incoming cosmogenic neutrino flux, neutrino attenuation, stau production, and stau energy loss shows that there is an optimal nadir angle for which the stau signal is a factor of several hundred larger than the muon signal. A discussion is presented of how one could potentially eliminate the muon background by considering the energy loss of muons in the detector. The results for the showers produced by weak interactions of staus that reach the detector is presented and compared to the showers produced by neutrinos.
Type:
text; Electronic Dissertation
Degree Name:
PhD
Degree Level:
doctoral
Degree Program:
Physics; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Sarcevic, Ina
Committee Chair:
Sarcevic, Ina

Full metadata record

DC FieldValue Language
dc.language.isoENen_US
dc.titleProbing Supersymmetry with Cosmogenic Neutrinosen_US
dc.creatorUscinski, Jessicaen_US
dc.contributor.authorUscinski, Jessicaen_US
dc.date.issued2008en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractNeutrino telescopes have the potential to detect quasi-stable supersymmetric staus predicted by some supersymmetric models. A study of the signal for the detection of staus produced in interactions of cosmogenic neutrinos is presented. The detection depends on the stau electromagnetic energy loss and weak interactions. The results for the weak interaction contribution to the energy loss of high energy staus as they pass through rock is presented. The neutral current weak interaction contribution is much smaller than photonuclear energy loss, however, the charged current contribution may become the dominant process for energies above 10^9GeV. As a consequence, the stau range may be reduced above 10^9 GeV as compared to the range neglecting weak interactions.A detailed analysis of the incoming cosmogenic neutrino flux, neutrino attenuation, stau production, and stau energy loss shows that there is an optimal nadir angle for which the stau signal is a factor of several hundred larger than the muon signal. A discussion is presented of how one could potentially eliminate the muon background by considering the energy loss of muons in the detector. The results for the showers produced by weak interactions of staus that reach the detector is presented and compared to the showers produced by neutrinos.en_US
dc.typetexten_US
dc.typeElectronic Dissertationen_US
thesis.degree.namePhDen_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplinePhysicsen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorSarcevic, Inaen_US
dc.contributor.chairSarcevic, Inaen_US
dc.contributor.committeememberFang, Li-Zhien_US
dc.contributor.committeememberJohns, Kenen_US
dc.contributor.committeememberManne, Srinivasen_US
dc.contributor.committeememberPsaltis, Dimitriosen_US
dc.identifier.proquest2898en_US
dc.identifier.oclc659749544en_US
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