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doctoral thesis
Proširenja standardnog modela s radijacijskim generiranjem neutrinskih masa
Zagreb: University of Zagreb, Faculty of Science, 2019. urn:nbn:hr:217:918865
Čuljak, Petar
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

Cite this document

Čuljak, P. (2019). Proširenja standardnog modela s radijacijskim generiranjem neutrinskih masa (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:918865

Čuljak, Petar. "Proširenja standardnog modela s radijacijskim generiranjem neutrinskih masa." Doctoral thesis, University of Zagreb, Faculty of Science, 2019. https://urn.nsk.hr/urn:nbn:hr:217:918865

Čuljak, Petar. "Proširenja standardnog modela s radijacijskim generiranjem neutrinskih masa." Doctoral thesis, University of Zagreb, Faculty of Science, 2019. https://urn.nsk.hr/urn:nbn:hr:217:918865

Čuljak, P. (2019). 'Proširenja standardnog modela s radijacijskim generiranjem neutrinskih masa', Doctoral thesis, University of Zagreb, Faculty of Science, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:217:918865

Čuljak P. Proširenja standardnog modela s radijacijskim generiranjem neutrinskih masa [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Science; 2019 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:217:918865

P. Čuljak, "Proširenja standardnog modela s radijacijskim generiranjem neutrinskih masa", Doctoral thesis, University of Zagreb, Faculty of Science, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:217:918865

Metadata
TitleProširenja standardnog modela s radijacijskim generiranjem neutrinskih masa
Title (english)Extensions of the Standard Model with radiative neutrino mass generation
AuthorPetar Čuljak
MentorKrešimir Kumerički (mentor)
Committee memberIvica Picek (predsjednik povjerenstva)
Committee memberKrešimir Kumerički (član povjerenstva)
Committee memberDinko Ferenček (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2019-02-15, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Universal decimal classification
(UDC)		53 - Physics
Abstract
Detaljno predstavljamo dva modela radijativnog generiranja neutrinskih masa, pri čemu nije potrebno uvođenje novih simetrija kako bi se spriječilo pojavljivanje neutrinskih masa već na granastoj razini. Oba modela mogu biti skotogenična, tj. sadrže česticu koja je stabilna i odgovara tamnoj tvari. Prvi model uvodi realni skalarni triplet, nabijeni singlet i tri generacije dubleta vektorskog tipa, te se masa neutrina generira na razini jedne petlje. Kako bi neutralna komponenta skalarnog tripleta bila stabilna potrebno je uvesti ad hoc Z2 diskretnu simetriju. Drugi model uvodi skalarni kvintuplet, septuplet, te tri generacije leptonskih kvintupleta koji ulaze u tropetljeni dijagram neutrinskih masa. Model uključuje dva Higgsova dubleta što vodi na slucajnu Z2 simetriju Lagrangiana. Česticu tamne tvari možemo naći u jednoj od neutralnih komponenti leptonskih kvintupleta, te je ona automatski stabilna. Za oba modela smo ispitali prošireni Higgsov sektor, te moguće signale vidljive na LHC-u i budućim sudarivačima.
Abstract (english)
We cover in detail two models of radiative neutrino mass generation, where no new symmetry is needed to forbid tree-level neutrino masses. Both models are scotogenic, as they provide one of the new particles as a dark matter candidate. In the first model, neutrino masses are generated at one-loop level through a diagram closed by real scalar triplet, charged scalar singlet and three generations of vector-like lepton doublets. To make the neutral component of the triplet a viable dark matter candidate we have to stabilize it by introducing an ad hoc discrete Z2 symmetry. Second model falls in the category of two Higgs doublets models. Imposing flavour conservation in the Higgs sector leads to an accidental discrete Z2 symmetry which stabilizes the lightest among the exotic particles which we place in a scalar septuplet, a scalar quintuplet, and three generations of lepton quintuplets. Neutrino mass diagram is closed by these new particles at three-loop level. We take under scrutiny the extended Higgs sectors of both models, and analyse possible signatures at the LHC and futuristic pp colliders.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:918865
Study programmeTitle: Physics
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika (doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika)
Type of resourceText
Extent80 str.
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-03-19 08:58:30