2009/09/16 by Priyotosh Bandyopadhyay, Biplob Bhattacherjee, AseshKrishna Datta · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Cosmology and Gravitation Theories #Gauge (firearms) #Gauge boson #Gauge theory #Higgs boson #Higgs sector #Large Hadron Collider #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #Universal extra dimension #hep-ph
paper · pdf · doi:10.1007/jhep03(2010)048
published as JHEP 1003:048,2010 · 25 pages, 9 figures and 1 table
arxiv created 2009/09/16 · openalex publication_date 2010/03/01 · arxiv updated 2014/11/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The Higgs sector of the Universal Extra Dimensions (UED) has a rather involved setup. With one extra space dimension, the main ingredients to the construct are the higher Kaluza-Klein (KK) excitations of the Standard Model Higgs boson and the fifth components of the gauge fields which on compactification appear as scalar degrees of freedom and can mix with the former thus leading to physical KK-Higgs states of the scenario. In this work, we explore in detail the phenomenology of such a Higgs sector of the UED with the Large Hadron Collider (LHC) in focus. We work out relevant decay branching fractions involving the KK-Higgs excitations. Possible production modes of the KK-Higgs bosons are then discussed with an emphasis on their associated production with the third generation KK-quarks and that under the cascade decays of strongly interacting UED excitations which turn out to be the only phenomenologically significant modes. It is pointed out that the collider searches of such Higgs bosons face generic hardship due to soft end-products which result from severe degeneracies in the masses of the involved excitations in the minimal version of the UED (MUED). Generic implications of either observing some or all of the KK-Higgs bosons at the LHC are discussed.