Probing a slepton Higgs on all frontiers

Biggio, Carla; Dror, Jeff A.; Grossman, Yuval; Ng, Wee Hao

doi:10.1007/jhep04(2016)150

Cited by 6 publications

(4 citation statements)

References 52 publications

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“…After the Higgs boson discovery, this has been studied in the context of the SUSY phenomenology and was found to lead to various interesting signatures and better agreements with particular phenomena [17][18][19][20]. For low-scale SUSY, R-symmetry with introducing adjoint multiplets is needed to avoid too large neutrino masses, and a low cutoff scale is needed to get realistic SM Yukawa interaction terms unless there are additional Higgs multiplets.…”

Section: A Susy Extension Of the Smmentioning

confidence: 99%

Charge quantization and neutrino mass from Planck-scale SUSY

Yin

2018

Physics Letters B

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We show a possibility for the charge quantization of the standard model (SM) particles. If a global symmetry makes the three copies of a generation and supersymmetry (SUSY) relates the Higgs boson to a lepton, all the charges of the SM particles can be quantized through gauge-anomaly cancellation. In the minimal model realizing the possibility, the gravitino mass around the Planck-scale is needed to generate the SM couplings through (quantum) supergravity. Much below the Planck-scale, the SM with non-vanishing neutrino masses is obtained as the effective theory. As extensions of the SM with this quantization mechanism, millicharged particles can exist without introducing massless hidden photons.

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Section: A Susy Extension Of the Smmentioning

confidence: 99%

Charge quantization and neutrino mass from Planck-scale SUSY

Yin

2018

Physics Letters B

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“…Such identification can lead to models with unusual structure and phenomenology. For example, if the U(1) R symmetry is identified with a lepton number the sneutrino can acquire a significant vacuum expectation value (vev) and play the role of the down type Higgs [12,[14][15][16][17][27][28][29].…”

Section: Contentsmentioning

confidence: 99%

“…As we deal with particles with masses of the order of a few TeV and which decouple at small x, g * can safely be approximated by a constant g * ≈ 106.75. The parameter Y eq i represents the equilibrium value of Y i and is given by [101]: 29) where the i and j indices can represent any particle. Annihilation of two binos contributes to σ ij v ij , annihilation of a single bino contributes to σ iX v iX and conversion contributes to σ jX v jX .…”

Section: Calculation Of the Baryon Relic Densitymentioning

confidence: 99%

LHC phenomenology and baryogenesis in supersymmetric models with a U(1) R baryon number

Beauchesne

Earl

Gregoire

2017

J. High Energ. Phys.

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Abstract:We study the phenomenology of a supersymmetric extension of the Standard Model with an R-symmetry under which R-charges correspond to the baryon number. This identification allows for the presence in the superpotential of the R-parity violating term λ U c D c D c without breaking baryon number, which loosens several bounds on this operator while changing considerably the phenomenology. However, the R-symmetry cannot remain exact as it is at least broken by anomaly mediation. Under these conditions, we investigate the constraints coming from baryon number violating processes and flavour physics and find that, in general, they are lessened. Additionally, we examine recent AT-LAS and CMS experimental searches and use these to place limits on the parameter space of the model. This is done for both stop production, which now features both pair and resonant production, and pair production of the first two generations of squarks. Finally, we study the implications this model has on baryogenesis. We find that successful baryogenesis can potentially be achieved, but only at the cost of breaking the R-symmetry by a significant amount.

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“…Such identification can lead to models with unusual structure and phenomenology. For example, if the U(1) R symmetry is identified with a lepton number, the sneutrino can acquire a significant vacuum expectation value and play the role of the down type Higgs [172][173][174][175][176][186][187][188].…”

Section: Introductionmentioning

confidence: 99%

Exploring Supersymmetry and Naturalness in Light of New Experimental Data

Earl¹

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This thesis investigates extensions of the Standard Model (SM) that are based on either supersymmetry or the Twin Higgs model. New experimental data, primarily collected at the Large Hadron Collider (LHC), play an important role in these investigations. Specifically, we examine the following five cases.We first consider Mini-Split models of supersymmetry. These types of models can be generated by both anomaly and gauge mediation and we examine both cases. LHC searches are used to constrain the relevant parameter spaces, and future prospects at LHC 14 and a 100 TeV proton proton collider are investigated. v presented in section 6.2.1 were initially computed by Thomas Grégoire and were independently verified by the author. Except for the bounds coming from displaced vertices which were determined by Hugues Beauchesne, the analysis of the collider phenomenology presented in section 6.3 was performed by the author.• The results presented in chapter 7 are published in [3]. All results in this chapter were derived by the author.• The results presented in chapter 8 are published in [4]. This project was also worked on by Hugues Beauchesne. As such, the results from this chapter are also presented in Hugues Beauchesne's thesis. The main idea in this chapter, to break the Z 2 symmetry spontaneously, was thought of by Hugues Beauchesne. Many of the details of the model were also initially worked out by Hugues Beauchesne and subsequently confirmed by the author. The radiative corrections presented in section 8.2.3 were originally computed by the author and confirmed by Hugues Beauchesne.

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Probing a slepton Higgs on all frontiers

Cited by 6 publications

References 52 publications

Charge quantization and neutrino mass from Planck-scale SUSY

Charge quantization and neutrino mass from Planck-scale SUSY

LHC phenomenology and baryogenesis in supersymmetric models with a U(1) R baryon number

Exploring Supersymmetry and Naturalness in Light of New Experimental Data

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