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Title: Radiative corrections to masses and couplings in universal extra dimensions

Abstract

Models with an orbifolded universal extra dimension receive important loop-induced corrections to the masses and couplings of Kaluza-Klein (KK) particles. The dominant contributions stem from so-called boundary terms which violate KK number. Previously, only the parts of these boundary terms proportional to ln(ΛR) have been computed, where R is the radius of the extra dimension and Λ is cut-off scale. However, for typical values of ΛR ~ 10 · · · 50, the logarithms are not particularly large and non-logarithmic contributions may be numerically important. In this paper, these remaining finite terms are computed and their phenomenological impact is discussed. It is shown that the finite terms have a significant impact on the KK mass spectrum. Furthermore, one finds new KK-number violating interactions that do not depend on ln(ΛR) but nevertheless are non-zero. These lead to new production and decay channels for level-2 KK particles at colliders.

Authors:
 [1];  [2];  [1]
  1. Univ. of Pittsburgh, PA (United States). Pittsburgh Particle Physics Astrophysics & Cosmology Center (PITT-PACC). Dept. of Physics & Astronomy
  2. Univ. of Kansas, Lawrence, KS (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of Kansas, Lawrence, KS (United States); Univ. of Pittsburgh, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
OSTI Identifier:
1512403
Grant/Contract Number:  
SC0017965; PHY-1519175
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 3; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; phenomenology of field theories in higher dimensions; NLO computations

Citation Formats

Freitas, Ayres, Kong, Kyoungchul, and Wiegand, Daniel. Radiative corrections to masses and couplings in universal extra dimensions. United States: N. p., 2018. Web. doi:10.1007/jhep03(2018)093.
Freitas, Ayres, Kong, Kyoungchul, & Wiegand, Daniel. Radiative corrections to masses and couplings in universal extra dimensions. United States. doi:10.1007/jhep03(2018)093.
Freitas, Ayres, Kong, Kyoungchul, and Wiegand, Daniel. Thu . "Radiative corrections to masses and couplings in universal extra dimensions". United States. doi:10.1007/jhep03(2018)093. https://www.osti.gov/servlets/purl/1512403.
@article{osti_1512403,
title = {Radiative corrections to masses and couplings in universal extra dimensions},
author = {Freitas, Ayres and Kong, Kyoungchul and Wiegand, Daniel},
abstractNote = {Models with an orbifolded universal extra dimension receive important loop-induced corrections to the masses and couplings of Kaluza-Klein (KK) particles. The dominant contributions stem from so-called boundary terms which violate KK number. Previously, only the parts of these boundary terms proportional to ln(ΛR) have been computed, where R is the radius of the extra dimension and Λ is cut-off scale. However, for typical values of ΛR ~ 10 · · · 50, the logarithms are not particularly large and non-logarithmic contributions may be numerically important. In this paper, these remaining finite terms are computed and their phenomenological impact is discussed. It is shown that the finite terms have a significant impact on the KK mass spectrum. Furthermore, one finds new KK-number violating interactions that do not depend on ln(ΛR) but nevertheless are non-zero. These lead to new production and decay channels for level-2 KK particles at colliders.},
doi = {10.1007/jhep03(2018)093},
journal = {Journal of High Energy Physics (Online)},
number = 3,
volume = 2018,
place = {United States},
year = {2018},
month = {3}
}

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