Constraint on Universal Extra Dimensions from scalar boson searches
Takuya Kakuda, Kenji Nishiwaki, Kin-ya Oda, Ryoutaro Watanabe
TL;DR
This paper derives bounds on five- and six-dimensional Universal Extra Dimension models using Higgs boson search results and electroweak precision data from the LHC, constraining the Kaluza-Klein scale.
Contribution
It provides updated lower bounds on the Kaluza-Klein scale in UED models based on recent collider and precision measurements, highlighting the impact of Higgs signals.
Findings
Lower bounds on KK scale range from 650 GeV to 1350 GeV.
Higgs production cross section can be enhanced by up to 1.5 times.
Diphoton decay signal is suppressed by about 10%.
Abstract
We show the bounds on five- and six-dimensional Universal Extra Dimension models from the result of the Higgs boson searches at the Large Hadron Collider and electroweak precision measurement. The latest data released by the ATLAS and the CMS gives the lower bounds on Kaluza-Klein scale which are from 650 GeV to 1350 GeV depending on models from Higgs to diboson/diphoton decay signal. The Higgs production cross section can be enhanced by factor 1.5 in crude estimation, diphoton decay signal is suppressed about 10%. Electroweak precision measurement also gives the lower bounds as from 700 GeV to 1500 GeV.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Dark Matter and Cosmic Phenomena · Algorithms and Data Compression