Family unification in special grand unification

Yamatsu, Naoki

doi:10.1093/ptep/pty100

Cited by 15 publications

(19 citation statements)

References 71 publications

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“…Recently, an alternative gauge-Higgs unification model with quark-lepton multiplets introduced in the spinor, vector, and singlet representations of SOð5Þ, which is referred to as the B model below, has been proposed [13]. The B model can be embedded in the SOð11Þ gauge-Higgs grand unification [35][36][37][38][39][40][41][42], where the SM gauge group and quark-lepton content are incorporated into the grand unified theory (GUT) [43][44][45][46][47][48] in a higher-dimensional framework [49][50][51][52][53][54][55][56][57][58][59].…”

Section: Introductionmentioning

confidence: 99%

Fermion pair production at e−e+ linear collider experiments in GUT inspired gauge-Higgs unification

Funatsu

Hatanaka²,

Hosotani

et al. 2020

Phys. Rev. D

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Fermion pair production at e − e þ linear collider experiments with polarized e − and e þ beams is examined in the GUT inspired SOð5Þ × Uð1Þ × SUð3Þ gauge-Higgs unification. There arises large parity violation in the couplings of leptons and quarks to Kaluza-Klein (KK) excited neutral vector bosons Z 0 s, which leads to distinctive polarization dependence in cross sections, forward-backward asymmetries, leftright asymmetries, and left-right forward-backward asymmetries in various processes. Those effects are detectable even for the KK mass scale up to about 15 TeV at future e − e þ linear collider experiments with energies 250 GeV to 1 TeV.

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Section: Introductionmentioning

confidence: 99%

Fermion pair production at e−e+ linear collider experiments in GUT inspired gauge-Higgs unification

Funatsu

Hatanaka²,

Hosotani

et al. 2020

Phys. Rev. D

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“…• The only non-trivial case where all fermions can be embedded in a single representation2 is by using the 171 representation of SU(19). This possibility was also mentioned in [11].…”

Section: Pos(ichep2020)241mentioning

confidence: 67%

Explaining the SM flavor structure with grand unified theories

Fonseca¹

2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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We do not know why there are three fermion families in the Standard Model (SM), nor can we explain the observed pattern of fermion masses and mixing angles. Standard grand unified theories based on the SU(5) and SO(10) groups fail to shed light on this issue, since they also contain three copies of fermion representations of an enlarged gauge group. However, it does not need to be so: the Standard Model families might be distributed over distinct representations of a grand unified model, in which case the gauge symmetry itself might discriminate the various families and explain (at least partially) the flavor puzzle. The most ambitious version of this idea consists on embedding all SM fermions in a single irreducible representation of the gauge group.

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“…It is known that the 6D gauge anomalies can be canceled out by introducing additional 6D USp(32) 32 negative Weyl fermions with different BCs as discussed in Refs. [19][20][21]. Parity assignments of Ψ (a) 32 are shown in Table 3 We check contributions to 4D brane anomalies from the above 6D Weyl fermion sets.…”

Section: Fermionic Sectormentioning

confidence: 99%

“…where the subscript of arrows (R) stands for a regular subgroup breaking, G SM := SU (3) C × SU (2) L × U (1) Y stands for the SM gauge group, G PS := SU (2) L × SU (2) R × SU (4) C stands for the Pati-Salam group [18], and we omitted several U (1) subgroups. A few GUT models [19][20][21] have been already proposed based on GUT gauge groups which are broken not only to regular subgroups but also to special subgroups; e.g.,…”

Section: Introductionmentioning

confidence: 99%

Special grand unification

Yamatsu

2017

Progress of Theoretical and Experimental Physics

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We discuss new-type grand unified theories based on grand unified groups broken to their special subgroups as well as their regular subgroups. In the framework, when we construct four-dimensional (4D) chiral gauge theories, i.e., the Standard Model (SM), 4D gauge anomaly cancellation restricts the minimal number of generations of the 4D SM Weyl fermions. We show that in a six-dimensional (6D) SU (16) gauge theory on M 4 × T 2 /Z 2 one generation of the SM fermions can be embedded into a 6D bulk Weyl fermion. For the model including three chiral generations of the SM fermions, the 6D and 4D gauge anomalies on the bulk and fixed points are canceled out without exotic 4D chiral fermions. * Electronic address: yamatsu@cc.kyoto-su.ac.jp

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Family unification in special grand unification

Cited by 15 publications

References 71 publications

Fermion pair production at e−e+ linear collider experiments in GUT inspired gauge-Higgs unification

Fermion pair production at e−e+ linear collider experiments in GUT inspired gauge-Higgs unification

Explaining the SM flavor structure with grand unified theories

Special grand unification

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