Primordial black holes from Higgs vacuum instability : avoiding fine-tuning through an ultraviolet safe mechanism
Espinosa, José R. (Institut de Física d'Altes Energies)
Racco, Davide (Université de Genève. Département de Physique Théorique)
Riotto, A. (Université de Genève. Département de Physique Théorique)

Date:	2018
Abstract:	We have recently proposed the idea that dark matter in our universe is formed by primordial black holes generated by Standard Model Higgs fluctuations during inflation and thanks to the fact that the Standard Model Higgs potential develops an instability at a scale of the order of GeV. In this sense, dark matter does not need any physics beyond the Standard Model, although the mechanism needs fine-tuning to avoid the overshooting of the Higgs into the dangerous AdS vacuum. We show how such fine-tuning can be naturally avoided by coupling the Higgs to a very heavy scalar with mass GeV that stabilises the potential in the deep ultraviolet, but preserving the basic feature of the mechanism which is built within the Standard Model.
Grants:	European Commission 669668 Ministerio de Economía y Competitividad 2016-78022-P Ministerio de Economía y Competitividad FPA2014-55613-P Ministerio de Economía y Competitividad SEV-2016-0588 Ministerio de Economía y Competitividad SEV-2016-0597 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1450
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	The European Physical Journal. C, Particles and Fields, Vol. 78 (October 2018) , art. 806, ISSN 1434-6052

DOI: 10.1140/epjc/s10052-018-6274-2
PMID: 31708681

5 p, 745.5 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut de Física d’Altes Energies (IFAE)
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Articles > Published articles