Exotic diboson $$Z'$$ decays in the U$$\mu \nu $$SSM

Aguilar-Saavedra, J. A.; Lara, Iñaki; López-Fogliani, Daniel E.; Muñoz, Carlos

doi:10.1140/epjc/s10052-021-09588-6

Cited by 7 publications

(2 citation statements)

References 50 publications

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“…On the other hand, the direct production of these neutral particles is quite suppressed by their small coupling to the SM particles. The potential of a generic search to detect massive dijet signals in this context will be presented elsewhere [74].…”

Section: Phenomenological Prospectsmentioning

confidence: 99%

$U(1)'$ extensions of the $μν$SSM

Aguilar-Saavedra¹,

Lara²,

López-Fogliani³

et al. 2021

Preprint

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In 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 extra 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.

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Section: Phenomenological Prospectsmentioning

confidence: 99%

$U(1)'$ extensions of the $μν$SSM

Aguilar-Saavedra¹,

Lara²,

López-Fogliani³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…On the other hand, in the recently proposed UµνSSM [38,39], 1 which is a U(1) extension of the µνSSM [42], the possible presence of WIMP DM candidates dictated by the anomaly cancellation conditions was proven. 2 This is a remarkable result, given that the UµνSSM is a RPV scenario.…”

Section: Introductionmentioning

confidence: 98%

WIMP dark matter in the UμνSSM

Aguilar-Saavedra¹,

López-Fogliani²,

Muñoz³

et al. 2022

J. Cosmol. Astropart. Phys.

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The UμνSSM is a U(1)' extension of the μνSSM supersymmetric model, where baryon-number-violating operators as well as explicit mass terms are forbidden, and the potential domain wall problem is avoided. The gauge anomaly-cancellation conditions impose the presence of exotic quark superfields in the spectrum of UμνSSM models, and allow the presence of several singlet superfields under the standard model gauge group, in addition to the right-handed neutrino superfields. The gauge structure implies an additional discrete Z 2 symmetry in the superpotential, ensuring the stability of a singlet which behaves as WIMP dark matter without invoking R-parity. We analyze this novel possibility in detail, using the fermionic component of the singlet as the dark matter candidate. In particular, we compute its amount of relic density via Z', Higgs-right sneutrino and dark matter mediated annihilations, and its potential signals in dark matter direct detection experiments. The constraints on the parameter space due to Z'; direct searches at the LHC are imposed in the analysis, as well as those from the hadronization inside the detector of the exotic quarks. Large regions of the parameter space turn out to be in the reach of the upcoming Darwin experiment.

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$$U(1)'$$ extensions of the $$\mu \nu \mathrm{SSM}$$

et al. 2021

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In the $$\mu \nu $$ μ ν SSM, the presence of R-parity violating couplings involving right-handed (RH) neutrinos solves simultaneously the $$\mu $$ μ - and $$\nu $$ ν -problems. We explore extensions of the $$\mu \nu $$ μ ν SSM adding a $$U(1)'$$ U ( 1 ) ′ gauge group, which provides the RH neutrinos with a non-vanishing charge. In these models, dubbed U$$\mu \nu $$ μ ν SSM, 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 $$U(1)'$$ 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 $$U(1)'$$ U ( 1 ) ′ s are also present in U$$\mu \nu $$ μ ν SSM models: baryon-number-violating operators as well as explicit Majorana masses and $$\mu $$ μ terms are forbidden, and the domain wall problem is avoided. The phenomenology of U$$\mu \nu $$ μ ν SSM models is very rich. We analyze the experimental constraints on their parameter space, specially on the mass and mixing of the new $$Z'$$ Z ′ boson. In addition to the exotic quarks, which can hadronize inside the detector or decay producing SM particles, the U$$\mu \nu $$ μ ν SSM models can also have new signals such as decays of the $$Z'$$ Z ′ to sparticle pairs like right sneutrinos, charginos or neutralinos. Besides, $$Z'$$ Z ′ and Higgs mediated annihilations and interactions with the visible sector of WIMP dark matter particles, can also be present.

show abstract

Exotic diboson $$Z'$$ decays in the U$$\mu \nu $$SSM

Cited by 7 publications

References 50 publications

$U(1)'$ extensions of the $μν$SSM

$U(1)'$ extensions of the $μν$SSM

WIMP dark matter in the UμνSSM

$$U(1)'$$ extensions of the $$\mu \nu \mathrm{SSM}$$

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