Radiative corrections to masses and couplings in universal extra dimensions
- Univ. of Pittsburgh, PA (United States). Pittsburgh Particle Physics Astrophysics & Cosmology Center (PITT-PACC). Dept. of Physics & Astronomy
- Univ. of Kansas, Lawrence, KS (United States). Dept. of Physics and Astronomy
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.
- Research Organization:
- Univ. of Kansas, Lawrence, KS (United States); Univ. of Pittsburgh, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
- Grant/Contract Number:
- SC0017965; PHY-1519175
- OSTI ID:
- 1512403
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2018, Issue 3; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Living orthogonally: quasi-universal extra dimensions
|
journal | January 2019 |
Loop Induced Single Top Partner Production and Decay at the LHC | text | January 2018 |
Living Orthogonally: Quasi-universal Extra Dimensions | text | January 2018 |
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