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EnglishThe framework of a warped extra dimension with the Standard Model (SM) fields propagating in it is a very well-motivated extension of the SM since it can address both the Planck-weak and flavor hierarchy problems of the SM. Within this framework, solution to the little hierarchy problem motivates extending the SM electroweak (EW) 5D gauge symmetry in such a way that its breakdown to the SM delivers the SM Higgs boson. We study signals at the large hadron collider (LHC) for the extra EW (called coset) gauge bosons, a fundamental ingredient of this framework. The coset gauge bosons, due to their unique EW gauge quantum numbers [doublets of SU(2)_L], do not couple at leading order to two SM particles. We find that, using the associated production of the charged coset gauge bosons via their coupling to SM bottom quark and a (light) KK top quark, the LHC can have a 3\sigma reach of \sim 2 (2.6) TeV for the coset gauge boson masses with \sim 100 (1000) fb^{-1} luminosity. Since current theoretical framework(s) suggest an {\em indirect} lower limit on coset gauge boson masses of >3 TeV, luminosity or energy upgrade of LHC is likely to be crucial in observing these states.
LHC signals for coset electroweak gauge bosons in warped/composite pseudo-goldstone boson Higgs models / Agashe, Kaustubh; Azatov, Aleksandr; Han, Tao; Li, Yingchuan; Si, Zong-Guo; Zhu, Lijun. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 81:9(2010), pp. 1-27.
| Titolo: | LHC signals for coset electroweak gauge bosons in warped/composite pseudo-goldstone boson Higgs models |
| Autori: | Agashe, Kaustubh; Azatov, Aleksandr; Han, Tao; Li, Yingchuan; Si, Zong-Guo; Zhu, Lijun |
| Rivista: | |
| Data di pubblicazione: | 2010 |
| Volume: | 81 |
| Fascicolo: | 9 |
| Pagina iniziale: | 1 |
| Pagina finale: | 27 |
| Numero di Articolo: | 096002 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevD.81.096002 |
| URL: | https://arxiv.org/abs/0911.0059 |
| Appare nelle tipologie: | 1.1 Journal article |
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http://hdl.handle.net/20.500.11767/66292
