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dc.contributor.authorAguilar Saavedra, Juan Antonio 
dc.contributor.authorLara, I.
dc.contributor.authorLópez-Fogliani, Daniel E.
dc.contributor.authorMuñoz, C.
dc.identifier.citationAguilar-Saavedra, J.A., Lara, I., López-Fogliani, D.E. et al. U(1)′ extensions of the μνSSM. Eur. Phys. J. C 81, 443 (2021). []es_ES
dc.descriptionThe research of JAASwas supported by the Spanish Agencia Estatal de Investigación (AEI) through project PID2019- 110058GB-C21. Thework of ILwas funded by the Norwegian Financial Mechanism 2014-2021, Grant DEC-2019/34/H/ST2/00707. The work of DL was supported by the Argentinian CONICET, and also acknowledges the support through PIP 11220170100154CO, and the Spanish grant FPA2015-65929-P (MINECO/FEDER, UE). The research of CM was supported by the Spanish AEI through the grants FPA2015-65929- P (MINECO/FEDER,UE), PGC2018-095161-B-I00 and IFTCentro de Excelencia Severo Ochoa SEV-2016-0597. The authors acknowledge the support of the Spanish Red Consolider MultiDark FPA2017-90566- REDC.es_ES
dc.description.abstractIn the μνSSM, the presence of R-parity violating couplings involving right-handed (RH) neutrinos solves simultaneously the μ- and ν-problems. We explore extensions of the μνSSM adding a U(1)′ gauge group, which provides the RH neutrinos with a non-vanishing charge. In these models, dubbed UμνSSM, the anomaly cancellation conditions impose the presence of exotic quarks in the spectrum that are vector-like under the standard model (SM) gauge group: either three pairs SU(2) quark singlets, or a pair of quark singlets together with a pair of quark doublets. Several singlets under the SM group can also be present, with the U(1)′ charges making distinctions among them, and therefore allowing different types of couplings. Some of these singlets dynamically generate Majorana masses for the RH neutrinos, and others can be candidates for dark matter. The useful characteristics of models with U(1)′s are also present in UμνSSM models: baryon-number-violating operators as well as explicit Majorana masses and μ terms are forbidden, and the domain wall problem is avoided. The phenomenology of UμνSSM models is very rich. We analyze the experimental constraints on their parameter space, specially on the mass and mixing of the new Z′ boson. In addition to the exotic quarks, which can hadronize inside the detector or decay producing SM particles, the UμνSSM models can also have new signals such as decays of the Z′ to sparticle pairs like right sneutrinos, charginos or neutralinos. Besides, Z′ and Higgs mediated annihilations and interactions with the visible sector of WIMP dark matter particles, can also be present.es_ES
dc.description.sponsorshipSpanish Agencia Estatal de Investigación (AEI) through project PID2019- 110058GB-C21es_ES
dc.description.sponsorshipNorwegian Financial Mechanism 2014-2021, Grant DEC-2019/34/H/ST2/00707es_ES
dc.description.sponsorshipArgentinian CONICETes_ES
dc.description.sponsorshipPIP 11220170100154COes_ES
dc.description.sponsorshipSpanish grant FPA2015-65929-P (MINECO/FEDER, UE)es_ES
dc.description.sponsorshipSpanish AEI through the grants FPA2015-65929- P (MINECO/FEDER,UE), PGC2018-095161-B-I00es_ES
dc.description.sponsorshipIFTCentro de Excelencia Severo Ochoa SEV-2016-0597es_ES
dc.description.sponsorshipSpanish Red Consolider MultiDark FPA2017-90566- REDCes_ES
dc.publisherSpringer Naturees_ES
dc.rightsAtribución 3.0 España*
dc.titleU(1)′ extensions of the μνSSMes_ES

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