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Effective Lagrangian approach to neutrinoless double beta decay and neutrino masses

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Effective Lagrangian approach to neutrinoless double beta decay and neutrino masses

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dc.contributor.author	del Aguila, Francisco
dc.contributor.author	Aparici Benages, Alberto
dc.contributor.author	Bhattacharya, Subhaditya
dc.contributor.author	Santamaria, Arcadi
dc.contributor.author	Wudka, José
dc.date.accessioned	2017-06-05T13:54:17Z
dc.date.available	2017-06-05T13:54:17Z
dc.date.issued	2012
dc.identifier.citation	del Aguila, Francisco; Aparici Benages, Alberto; Bhattacharya, Subhaditya; Santamaria, Arcadi; Wudka, José (2012) Effective Lagrangian approach to neutrinoless double beta decay and neutrino masses The Journal of high energy physics 1206 146
dc.identifier.uri	http://hdl.handle.net/10550/58877
dc.description.abstract	Neutrinoless double beta (0νββ) decay can in general produce electrons of either chirality, in contrast with the minimal Standard Model (SM) extension with only the addition of the Weinberg operator, which predicts two left-handed electrons in the final state. We classify the lepton number violating (LNV) effective operators with two leptons of either chirality but no quarks, ordered according to the magnitude of their contribution to 0νββ decay. We point out that, for each of the three chirality assignments, eLeL, eLeR and eReR, there is only one LNV operator of the corresponding type to lowest order, and these have dimensions 5, 7 and 9, respectively. Neutrino masses are always induced by these extra operators but can be delayed to one or two loops, depending on the number of RH leptons entering in the operator. Then, the comparison of the 0νββ decay rate and neutrino masses should indicate the effective scenario at work, which confronted with the LHC searches should also eventually decide on the specific model elected by nature. We also list the SM additions generating these operators upon integration of the heavy modes, and discuss simple realistic examples of renormalizable theories for each case.
dc.language.iso	eng
dc.relation.ispartof	The Journal of high energy physics, 2012, vol. 1206, p. 146
dc.subject	Física
dc.subject	Partícules (Física nuclear)
dc.title	Effective Lagrangian approach to neutrinoless double beta decay and neutrino masses
dc.type	journal article	es_ES
dc.date.updated	2017-06-05T13:54:17Z
dc.identifier.doi	10.1007/JHEP06(2012)146
dc.identifier.idgrec	084403
dc.rights.accessRights	open access	es_ES