Hypercharge-Universal Topcolor

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dc.creatorBraam, Felix
dc.creatorFlossdorf, Michael
dc.creatorChivukula, R. Sekhar
dc.creatorDi Chiara, Stefano
dc.creatorSimmons, Elizabeth H.
dc.date2007-11-07
dc.date2008-01-03
dc.date.accessioned2026-07-07T11:38:37Z
dc.date.available2026-07-07T11:38:37Z
dc.descriptionWe propose and discuss the phenomenology of a Topcolor-assisted Technicolor (TC2) model with a flavor-universal hypercharge sector. After discussing the symmetry breaking pattern and low-energy effective Lagrangian, we examine various experimental and theoretical constraints, finding that precision electroweak measurements yield the strongest bounds on the model. We perform a combined fit to all available $Z$-pole and LEP2 data and find that the goodness of fit for hypercharge-universal topcolor is comparable to that of the Standard Model. In contrast, TC2 models with a flavor non-universal hypercharge sectors are markedly disfavored by the data.
dc.description21 pages, 11 eps figures, reference and clarifying remarks added
dc.identifierhttps://arxiv.org/abs/0711.1127
dc.identifierhttp://arxiv.org/abs/0711.1127
dc.identifierPhys.Rev.D77:055005,2008
dc.identifierdoi:10.1103/PhysRevD.77.055005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199626
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHypercharge-Universal Topcolor
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