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Naturalness in the dark at the LHC

Craig, Nathaniel
Strassler, Matt
Sundrum, Raman
Published in Journal of High Energy Physics. 2015, vol. 1507, p. 105-154
Collection Open Access - SCOAP3
Abstract We revisit the Twin Higgs scenario as a “dark” solution to the little hierarchy problem, identify the structure of a minimal model and its viable parameter space, and analyze its collider implications. In this model, dark naturalness generally leads to Hidden Valley phenomenology. The twin particles, including the top partner, are all Standard-Model-neutral, but naturalness favors the existence of twin strong interactions — an asymptotically-free force that confines not far above the Standard Model QCD scale — and a Higgs portal interaction. We show that, taken together, these typically give rise to exotic decays of the Higgs to twin hadrons. Across a substantial portion of the parameter space, certain twin hadrons have visible and often displaced decays, providing a potentially striking LHC signature. We briefly discuss appropriate experimental search strategies.
Keywords Nonperturbative EffectsGlobal SymmetriesEffective field theories
arXiv: 1501.05310
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CRAIG, Nathaniel et al. Naturalness in the dark at the LHC. In: Journal of High Energy Physics, 2015, vol. 1507, p. 105-154. doi: 10.1007/JHEP07(2015)105 https://archive-ouverte.unige.ch/unige:74431

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Deposited on : 2015-07-31

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