eprintid: 21652
rev_number: 16
eprint_status: archive
userid: 2656
dir: disk0/00/02/16/52
datestamp: 2016-08-24 09:37:22
lastmod: 2016-09-30 13:54:48
status_changed: 2016-08-24 09:37:22
type: doctoralThesis
metadata_visibility: show
creators_name: Humbert, Pascal
title: Alternative Electroweak Symmetry Breaking based on Conformal Extensions of the Standard Model
subjects: ddc-530
divisions: i-130001
adv_faculty: af-13
abstract: In order to address the hierarchy problem and to simultaneously explain small
neutrino masses, we study conformal extensions of the Standard Model (SM),
which realize an inverse seesaw mechanism. Furthermore, we give a systematic
discussion of the neutrino mass matrix in a generalized type-I seesaw set-up.
We study the conformal inverse seesaw mechanism (CISS), in which the conformal
symmetry is spontaneously broken via the Coleman-Weinberg mechanism
at a few TeV. We confirm that in this set-up the electroweak vacuum expectation
value and the Higgs mass are obtained within experimental uncertainties. The
scalar sector in the broken phase contains, besides the Higgs, a massive scalar
with a mass in the TeV-range and the pseudo-Goldstone boson of broken scale
invariance with a mass of the order of hundreds of GeV. The CISS also features
a hidden Abelian gauge symmetry. We show that the CISS generates active
neutrino masses and mixings in agreement with oscillation data. Additionally,
the neutrino spectrum contains a warm dark matter (DM) candidate with mass
in the keV-range and tiny mixing of the order of 10
date: 2016
id_scheme: DOI
id_number: 10.11588/heidok.00021652
ppn_swb: 477620051
own_urn: urn:nbn:de:bsz:16-heidok-216527
date_accepted: 2016-07-21
advisor: HASH(0x55a9a65648a8)
language: eng
bibsort: HUMBERTPASALTERNATIV2016
full_text_status: public
place_of_pub: Heidelberg
citation:   Humbert, Pascal  (2016) Alternative Electroweak Symmetry Breaking based on Conformal Extensions of the Standard Model.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/21652/1/Thesis_Pascal_Humbert.pdf