<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>Z</mml:mi><mml:mrow><mml:mi>B</mml:mi><mml:mo>−</mml:mo><mml:mi>L</mml:mi></mml:mrow><mml:mo>′</mml:mo></mml:msubsup></mml:math>phenomenology at the LHC

Coutinho, Y. Amaral; Montero, J. C.; Fortes, E. C. F. S.

doi:10.1103/physrevd.84.055004

Cited by 9 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Phenomenology of both sort of models were consider in Refs. [18][19][20][21][22]. Here we will consider only the supersymmetric extension of the model in which the right-handed neutrinos that are sterile with respect to the G SM interactions have the same B − L as the active neutrinos.…”

Section: One Of the Most Popular Extensions Of The Sm Is The Minimal mentioning

confidence: 99%

Supersymmetric U(1)Y′⊗ U(1)B−L extension of the Standard Model

Montero

Pleitez

Sánchez-Vega

et al. 2017

Int. J. Mod. Phys. A

Self Cite

View full text Add to dashboard Cite

We build a supersymmetric version withwhere Y is a new charge and B and L are the usual baryonic and leptonic numbers. The model has three right-handed neutrinos with identical B−L charges, and can accommodate all fermion masses at the tree level. In particular, the type-I seesaw mechanism is implemented for the generation of the active neutrino masses. We obtain the mass spectra of all sectors and for the scalar one we also give the flat directions allowed by the model.

show abstract

Section: One Of the Most Popular Extensions Of The Sm Is The Minimal mentioning

confidence: 99%

Supersymmetric U(1)Y′⊗ U(1)B−L extension of the Standard Model

Montero

Pleitez

Sánchez-Vega

et al. 2017

Int. J. Mod. Phys. A

Self Cite

View full text Add to dashboard Cite

show abstract

“…In models in which the DM is antibaryonic, the Z ′ B−L is common to both the visible and the dark sectors, and this modifies its phenomenology in interesting ways. If produced in colliders, it will have a significant decay width into darksector particles, which can be measured at the LHC [109][110][111][112][113][114][115][116][117][118][119][120][121][122] providing an important probe of the dark sector.…”

Section: Collider Signaturesmentioning

confidence: 99%

Visible and dark matter from a first-order phase transition in a baryon-symmetric universe

Petraki

Trodden

Volkas

2012

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

The similar cosmological abundances observed for visible and dark matter suggest a common origin for both. By viewing the dark matter density as a dark-sector asymmetry, mirroring the situation in the visible sector, we show that the visible and dark matter asymmetries may have arisen simultaneously through a first-order phase transition in the early universe. The dark asymmetry can then be equal and opposite to the usual visible matter asymmetry, leading to a universe that is symmetric with respect to a generalised baryon number. We present both a general structure, and a precisely defined example of a viable model of this type. In that example, the dark matter is "atomic" as well as asymmetric, and various cosmological and astrophysical constraints are derived. Testable consequences for colliders include a Z ′ boson that couples through the B − L charge to the visible sector, but also decays invisibly to dark sector particles. The additional scalar particles in the theory can mix with the standard Higgs boson and provide other striking signatures.

show abstract

“…A massive Z ′ B−L may thus be within the reach of the LHC. If produced, it is possible to measure its invisible decay [151][152][153][154][155][156][157][158][159][160][161][162][163][164]. If the latter cannot be accounted for by neutrinos, such a measurement will be significant evidence for a baryonic dark sector.…”

Section: Signaturesmentioning

confidence: 99%

Affleck-Dine dynamics and the dark sector of pangenesis

Harling¹,

Petraki²,

Volkas³

2012

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

Abstract. Pangenesis is the mechanism for jointly producing the visible and dark matter asymmetries via Affleck-Dine dynamics in a baryon-symmetric universe. The baryonsymmetric feature means that the dark asymmetry cancels the visible baryon asymmetry and thus enforces a tight relationship between the visible and dark matter number densities. The purpose of this paper is to analyse the general dynamics of this scenario in more detail and to construct specific models. After reviewing the simple symmetry structure that underpins all baryon-symmetric models, we turn to a detailed analysis of the required Affleck-Dine dynamics. Both gravity-mediated and gauge-mediated supersymmetry breaking are considered, with the messenger scale left arbitrary in the latter, and the viable regions of parameter space are determined. In the gauge-mediated case where gravitinos are light and stable, the regime where they constitute a small fraction of the dark matter density is identified. We discuss the formation of Q-balls, and delineate various regimes in the parameter space of the Affleck-Dine potential with respect to their stability or lifetime and their decay modes. We outline the regions in which Q-ball formation and decay is consistent with successful pangenesis. Examples of viable dark sectors are presented, and constraints are derived from big bang nucleosynthesis, large scale structure formation and the Bullet cluster. Collider signatures and implications for direct dark matter detection experiments are briefly discussed. The following would constitute evidence for pangenesis: supersymmetry, GeV-scale dark matter mass(es) and a Z ′ boson with a significant invisible width into the dark sector.

show abstract

ZB−L′phenomenology at the LHC

Cited by 9 publications

References 47 publications

Supersymmetric U(1)Y′⊗ U(1)B−L extension of the Standard Model

Supersymmetric U(1)Y′⊗ U(1)B−L extension of the Standard Model

Visible and dark matter from a first-order phase transition in a baryon-symmetric universe

Affleck-Dine dynamics and the dark sector of pangenesis

Contact Info

Product

Resources

About