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 term...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-03-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP03(2018)093 |
| _version_ | 1818317617573658624 |
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| author | Ayres Freitas Kyoungchul Kong Daniel Wiegand |
| author_facet | Ayres Freitas Kyoungchul Kong Daniel Wiegand |
| author_sort | Ayres Freitas |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-13T09:40:10Z |
| format | Article |
| id | doaj.art-fd0287c8f7d44b65839520896f714859 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-13T09:40:10Z |
| publishDate | 2018-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-fd0287c8f7d44b65839520896f7148592022-12-21T23:52:13ZengSpringerOpenJournal of High Energy Physics1029-84792018-03-012018313710.1007/JHEP03(2018)093Radiative corrections to masses and couplings in universal extra dimensionsAyres Freitas0Kyoungchul Kong1Daniel Wiegand2Pittsburgh Particle-physics Astro-physics & Cosmology Center (PITT-PACC), Department of Physics & Astronomy, University of PittsburghDepartment of Physics and Astronomy, University of KansasPittsburgh Particle-physics Astro-physics & Cosmology Center (PITT-PACC), Department of Physics & Astronomy, University of PittsburghAbstract 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.http://link.springer.com/article/10.1007/JHEP03(2018)093Phenomenology of Field Theories in Higher DimensionsNLO Computations |
| spellingShingle | Ayres Freitas Kyoungchul Kong Daniel Wiegand Radiative corrections to masses and couplings in universal extra dimensions Journal of High Energy Physics Phenomenology of Field Theories in Higher Dimensions NLO Computations |
| title | Radiative corrections to masses and couplings in universal extra dimensions |
| title_full | Radiative corrections to masses and couplings in universal extra dimensions |
| title_fullStr | Radiative corrections to masses and couplings in universal extra dimensions |
| title_full_unstemmed | Radiative corrections to masses and couplings in universal extra dimensions |
| title_short | Radiative corrections to masses and couplings in universal extra dimensions |
| title_sort | radiative corrections to masses and couplings in universal extra dimensions |
| topic | Phenomenology of Field Theories in Higher Dimensions NLO Computations |
| url | http://link.springer.com/article/10.1007/JHEP03(2018)093 |
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