Tests of non-standard electroweak couplings of right-handed quarks

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dc.creatorBernard, V.
dc.creatorOertel, M.
dc.creatorPassemar, E.
dc.creatorStern, J.
dc.date2007-07-30
dc.date2007-12-19
dc.date.accessioned2026-07-07T12:23:56Z
dc.date.available2026-07-07T12:23:56Z
dc.descriptionThe standard model can be interpreted as the leading order of a Low-Energy Effective Theory (LEET) invariant under a higher non linearly realized symmetry $S_{nat}\supset SU(2)_W \times U(1)_Y$ equipped with a systematic power counting. Within the minimal version of this ``not quite decoupling'' LEET, the dominant non-standard effect appears at next-to-leading order (NLO) and is a modification of the couplings of fermions to W and Z. In particular, the coupling of right-handed quarks to Z is modified and a direct coupling of right-handed quarks to W emerges. Charged right-handed lepton currents are forbidden by an additional discrete symmetry in the lepton sector originally designed to suppress Dirac neutrino masses. A complete NLO analysis of experimental constraints on these modified couplings is presented. Concerning couplings of light quarks, the interface of the electroweak tests with QCD aspects is discussed in detail.
dc.description56 pages, 14 figures, v2: references added, minor modifications in the text, accepted for publication in JHEP
dc.identifierhttps://arxiv.org/abs/0707.4194
dc.identifierhttp://arxiv.org/abs/0707.4194
dc.identifierJHEP 0801:015,2008
dc.identifierdoi:10.1088/1126-6708/2008/01/015
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214163
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleTests of non-standard electroweak couplings of right-handed quarks
dc.typetext

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