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PRECISION CALCULATIONS IN UNIVERSAL EXTRA DIMENSIONS

Wiegand, Daniel (2018) PRECISION CALCULATIONS IN UNIVERSAL EXTRA DIMENSIONS. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

The Standard Model of particle physics, despite its amazing success, is in need of an extension to describe nature at high scales. One class of proposals for such an extension are field theories with extra dimensions. Many of these models have attractive features like stable dark matter candidates, promising at least partial answers to natures questions.
Our focus lies with investigating the impact radiative corrections have on the phenomenology of the Universal Extra Dimensions (UED) model and the subsequent discovery potential at e.g. Hadron colliders. We study in detail the Next-to-Leading-Order corrections to the pair production of heavy vector color-octets, as they typically appear in such models. Additionally, we discuss how a variation of the cutoff scale influences this result. This is of particular importance since this a priori unknown scale represents a large source of uncertainty.
Subsequently we investigate radiatively induced operators for the entire Standard Model formulated in UED, particularly the impact they have on the degenerate mass spectrum and KK-number violating decays. This allows us to derive bounds from both indirect searches and directly detectable new physics signals.

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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Wiegand, Danieldmw88@pitt.edudmw880000-0001-9676-9700
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairFreitas, Ayresafreitas@pitt.edu
Committee MemberLeibovich, Adamakl2@pitt.edu
Committee MemberBoudreau, Josephboudreau@pitt.edu
Committee MemberKosowsky, Arthurkosowsky@pitt.edu
Committee MemberRothstein, Iraizr@andrew.cmu.edu
Date: 27 September 2018
Date Type: Publication
Defense Date: 10 May 2018
Approval Date: 27 September 2018
Submission Date: 28 May 2018
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 143
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Physics
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: precision calculations, QCD, universal extra dimensions
Date Deposited: 28 Sep 2018 00:10
Last Modified: 28 Sep 2018 00:10
URI: http://d-scholarship.pitt.edu/id/eprint/34554

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