Unparticle physics and Higgs phenomenology

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dc.creatorKikuchi, Tatsuru
dc.creatorOkada, Nobuchika
dc.date2007-07-06
dc.date2008-02-16
dc.date.accessioned2026-07-07T11:17:36Z
dc.date.available2026-07-07T11:17:36Z
dc.descriptionRecently, conceptually new physics beyond the Standard Model has been proposed, where a hidden conformal sector provides ``unparticle'' which couples to the Standard Model sector through higher dimensional operators in low energy effective theory. Among several possibilities, we focus on operators involving unparticle, the Higgs doublet and the gauge bosons. Once the Higgs doublet develops the vacuum expectation value, the conformal symmetry is broken and as a result, the mixing between unparticle and Higgs boson emerges. We find that this mixing can cause sizable shifts for the couplings between Higgs boson and a pair of gluons and photons, because these couplings exist only at the loop level in the Standard Model. These Higgs couplings are the most important ones for the Higgs boson search at the CERN Large Hadron Collider, and the unparticle physics effects may be observed together with the discovery of Higgs boson.
dc.description5 pages, 4 figures; version to appear in Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/0707.0893
dc.identifierhttp://arxiv.org/abs/0707.0893
dc.identifierPhys.Lett.B661:360-364,2008
dc.identifierdoi:10.1016/j.physletb.2008.02.041
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193058
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Theory
dc.titleUnparticle physics and Higgs phenomenology
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