Is leptogenesis falsifiable at LHC?

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dc.creatorFrère, J. -M.
dc.creatorHambye, T.
dc.creatorVertongen, G.
dc.date2008-06-04
dc.date2009-03-05
dc.date.accessioned2026-07-07T12:49:09Z
dc.date.available2026-07-07T12:49:09Z
dc.descriptionIt is well known that the leptogenesis mechanism offers an attractive possibility to explain the baryon asymmetry of the universe. Its particular robustness however comes with one major difficulty: it will be very hard if not impossible to test experimentally in a foreseeable future, as most of the mechanics typically takes place at high energy or results from suppressed interactions, without unavoidable low-energy implications. An alternate approach is taken by asking: can it be at least falsified? We show that possible discoveries at current and future colliders, most notably that of right-handed gauge interactions, would indeed forbid at least the "canonical" leptogenesis mechanisms, namely those based on right-handed neutrino decay. General lower bounds for successful leptogenesis on the mass of the right-handed gauge boson W_R are given. Other possibilities to falsify leptogenesis, including from the observation of a Z', are also considered.
dc.description22 pages ; v3: discussion about resonant leptogenesis case added ; matches JHEP published version
dc.identifierhttps://arxiv.org/abs/0806.0841
dc.identifierhttp://arxiv.org/abs/0806.0841
dc.identifierJHEP 0901:051,2009
dc.identifierdoi:10.1088/1126-6708/2009/01/051
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222305
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectCosmology and Nongalactic Astrophysics
dc.titleIs leptogenesis falsifiable at LHC?
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