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Seesaw majoron model of neutrino mass and novel signals in Higgs boson production at LEP

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Seesaw majoron model of neutrino mass and novel signals in Higgs boson production at LEP

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dc.contributor.author Díaz, Marco Aurelio
dc.contributor.author García Jareño, Miguel Ángel
dc.contributor.author Restrepo, Diego
dc.contributor.author Furtado Valle, José Wagner
dc.date.accessioned 2015-10-22T17:07:46Z
dc.date.available 2015-10-22T17:07:46Z
dc.date.issued 1998
dc.identifier.citation Díaz, Marco Aurelio García Jareño, Miguel Ángel Restrepo, Diego Furtado Valle, José Wagner 1998 Seesaw majoron model of neutrino mass and novel signals in Higgs boson production at LEP Nuclear Physics B 527 1-2 44 60
dc.identifier.uri http://hdl.handle.net/10550/47888
dc.description.abstract We perform a careful study of the neutral scalar sector of a model which includes a singlet, a doublet, and a triplet scalar field under SU(2). This model is motivated by neutrino physics, since it is simply the most general version of the seesaw model of neutrino mass generation through spontaneous violation of lepton number. The neutral Higgs sector contains three CP-even and one massive CP-odd Higgs boson A, in addition to the massless CP-odd majoron J. The weakly interacting majoron remains massless if the breaking of lepton number symmetry is purely spontaneous. We show that the massive CP-odd Higgs boson may invisibly decay to three majorons, as well as to a CP-even Higgs H boson plus a majoron. We consider the associated Higgs production e+e−→Z→HA followed by invisible decays A→JJJ and H→JJ and derive the corresponding limits on masses and coupling that follow from LEP I precision measurements of the invisible Z width. We also study a novel bb¯bb¯p/T signal predicted by the model, analyse the background and perform a Monte-Carlo simulation of the signal in order to illustrate the limits on Higgs boson mass, couplings and branching ratios that follow from that.
dc.language.iso eng
dc.relation.ispartof Nuclear Physics B, 1998, vol. 527, num. 1-2, p. 44-60
dc.subject Física
dc.title Seesaw majoron model of neutrino mass and novel signals in Higgs boson production at LEP
dc.type journal article es_ES
dc.date.updated 2015-10-22T17:07:47Z
dc.identifier.doi 10.1016/S0550-3213(98)00434-9
dc.identifier.idgrec 073538
dc.rights.accessRights open access es_ES

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