Effective Higgs theories in supersymmetric grand unification

Zheng, Sibo

doi:10.1140/epjc/s10052-017-5174-1

Cited by 6 publications

(9 citation statements)

References 39 publications

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“…In the minimal VL model, the matter content contains a singlet N , two down-type triplets D andD, and two VL doublets L andL with hyper charge 1/2 and −1/2, respectively. They constitute a 5 V and a5 V representation of SU(5) consistent with grand unification [7,8].…”

Section: The Modelmentioning

confidence: 99%

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Minimal vectorlike model in supersymmetric unification

Zheng

2020

Eur. Phys. J. C

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Compared to the minimal supersymmetric standard model, an extension by vectorlike fermions is able to explain the Higgs mass while retains the grand unification. We investigate the minimal vectorlike model by focusing on the vectorlike electroweak sector. We firstly derive the mass spectrum in the electroweak sector, then calculate the one-loop effects on the Higgs physics, and finally explore either vectorlike or neutralino dark matter. Collider constraints are briefly discussed.

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Section: The Modelmentioning

confidence: 99%

“…• First, the VL fermions are one of viable extensions which retain the perturbative unification [7,8], similar to a well-known example -the next-to-minimal supersymmetric model (NMSSM).…”

Section: Introductionmentioning

confidence: 99%

Minimal vectorlike model in supersymmetric unification

Zheng

2020

Eur. Phys. J. C

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“…(18) and Eq. (19) have been extensively studied [32,[40][41][42][43], which demonstrate that the fit to SM flavor masses and mixings is viable. But the construction of W SB responsible for the breaking of SO(10) → G SM is challenging [44][45][46][47], since some of triplet fields in 126 and 126 obtain mass of order υ1 26 s ∼ 10 13 GeV, which spoils the perturbative unification.…”

Section: The Benchmark Model: Mssmmentioning

confidence: 99%

Towards realistic SUSY grand unification for extended MSSM models

Zheng

2019

Phys. Rev. D

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Low-energy supersymmetric models such as MSSM, NMSSM and MSSM with vectorlike fermion are consistent with perturbative unification. While the non-minimal extensions naturally explain Higgs mass and dark matter in the low energy region, it is unclear how seriously they are constrained in the ultraviolet region. Our study shows that i), In the case of embedding MSSM into SU(5), the fit to SM fermion masses requires a singlet S, which leads to unviable embedding of NMSSM into SU(5) because such S feeds singlet N a mass of order unification scale as well. ii), Similar result holds in the case of embedding NMSSM into SO(10), where S is replaced by some Higgs fields responsible for SO(10) breaking. iii), On the contrary, for the embedding of MSSM with 16-dimensional vectorlike fermions into SO(10), the Higgs field responsible for the vectorlike mass of order TeV scale can evade those problems the singlet N encounters because of an intermediate mass scale in the 126-dimensional Higgs field.

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“…The issue of gauge coupling unification in the presence of VL fermions is not a new idea and it received a lot of attention in the literarture, both before the launch of the LHC [14,15,16,17,18,19,20,21,22,23], and after [24,25,26,27,28,10]. Similar analyses within the SUSY framework were performed as well [29,30,31,32,33,34,35,36]. In most of the former studies only particular types and a limited number of VL representations were considered.…”

Section: Introductionmentioning

confidence: 99%

Road map through the desert: unification with vector-like fermions

Kowalska

Kumar

2019

J. High Energ. Phys.

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In light of null results from New Physics searches at the LHC, we look at unification of the gauge couplings as a model-building principle. As a first step, we consider extensions of the Standard Model with vector-like fermions. We present a comprehensive list of spectra that feature fermions in two distinct SU (3) C × SU (2) L × U (1) Y representations, in which precise gauge coupling unification is achieved. We derive upper and lower limits on vector-like masses from proton decay measurements, running of the strong gauge coupling, heavy stable charged particle searches, and electroweak precision tests. We demonstrate that due to a particular hierarchy among the mass parameters required by the unification condition, complementarity of various experimental strategies allows us to probe many of the successful scenarios up to at least 10 TeV.

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Effective Higgs theories in supersymmetric grand unification

Cited by 6 publications

References 39 publications

Minimal vectorlike model in supersymmetric unification

Minimal vectorlike model in supersymmetric unification

Towards realistic SUSY grand unification for extended MSSM models

Road map through the desert: unification with vector-like fermions

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