SU(5) grand unification in pure gravity mediation

Evans, Jason L.; Nagata, Natsumi; Olive, Keith A.

doi:10.1103/physrevd.91.055027

Cited by 31 publications

(45 citation statements)

References 143 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The exchange of the GUTscale gauge bosons can also induce proton decay, but this contribution is usually subdominant because of the large GUT scale in supersymmetric GUTs. The strong constraint from the p → K + ν decay may, however, be evaded if the masses of supersymmetric particles are well above the electroweak scale [63,108,[119][120][121][122][123][124]. In addition, it turns out that the p → K + ν decay mode depends sensitively on the extra phases in the GUT Yukawa couplings [125], which can suppress the proton decay rate, as we discuss in this section.…”

Section: Proton Decay and Gut-scale Phasesmentioning

confidence: 99%

“…For more details of the proton decay calculation, see Refs. [63,108,119,124] and the appendix. In supersymmetric models, the largest contribution to the decay rate of the proton is determined by the dimension-five effective operators generated by integrating out the coloured Higgs multiplets [116][117][118],…”

Section: Proton Decay and Gut-scale Phasesmentioning

confidence: 99%

“…We chose the down-type Yukawa couplings for the h 5 matching condition, rather than the lepton Yukawa couplings, since it results in longer proton decay lifetimes and thus gives a conservative bounds on the model parameter space [63,108].…”

Section: Gut-scale Matching Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

The super-GUT CMSSM revisited

Ellis

Evans²,

Mustafayev

et al. 2016

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

We revisit minimal supersymmetric SU(5) grand unification (GUT) models in which the soft supersymmetrybreaking parameters of the minimal supersymmetric Standard Model (MSSM) are universal at some input scale, M in , above the supersymmetric gauge-coupling unification scale, M GUT . As in the constrained MSSM (CMSSM), we assume that the scalar masses and gaugino masses have common values, m 0 and m 1/2 , respectively, at M in , as do the trilinear soft supersymmetry-breaking parameters A 0 . Going beyond previous studies of such a super-GUT CMSSM scenario, we explore the constraints imposed by the lower limit on the proton lifetime and the LHC measurement of the Higgs mass, m h . We find regions of m 0 , m 1/2 , A 0 and the parameters of the SU(5) superpotential that are compatible with these and other phenomenological constraints such as the density of cold dark matter, which we assume to be provided by the lightest neutralino. Typically, these allowed regions appear for m 0 and m 1/2 in the multi-TeV region, for suitable values of the unknown SU(5) GUTscale phases and superpotential couplings, and with the ratio of supersymmetric Higgs vacuum expectation values tan β 6.

show abstract

Section: Proton Decay and Gut-scale Phasesmentioning

confidence: 99%

Section: Proton Decay and Gut-scale Phasesmentioning

confidence: 99%

See 1 more Smart Citation

The super-GUT CMSSM revisited

Ellis

Evans²,

Mustafayev

et al. 2016

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…All of these choices tend to decrease the proton lifetime to unacceptably small values [58]. In order to reconcile the proton lifetime with the relic density and Higgs mass, we need to consider lower values of tan β [38,58,67], which can be accomplished when the GM terms (9) are included [46][47][48]68]. The soft supersymmetry breaking parameters are evolved down from M in to M GUT using the renormalization-group equations (RGEs) of the minimal supersymmetric SU(5) GUT, which can be found in [57,59,[70][71][72][73], with appropriate changes of notation.…”

Section: Vacuum Conditions and Renormalization-group Equationsmentioning

confidence: 99%

“…Similarly, we define sepa- 11 Details of the calculation of proton decay rates can be found in Refs. [38,58,67,94,95]. Here, we have take the phases in the GUT Yukawa couplings [96] such that the proton decay rate is minimized [58], which gives a conservative constraint on the model parameter space.…”

Section: Twisted H and H Higgs Fieldsmentioning

confidence: 99%

No-scale SU(5) super-GUTs

Ellis

Evans²,

Nanopoulos

et al. 2017

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

We reconsider the minimal SU(5) grand unified theory (GUT) in the context of no-scale supergravity inspired by string compactification scenarios, assuming that the soft supersymmetry-breaking parameters satisfy universality conditions at some input scale M in above the GUT scale M GUT . When setting up such a no-scale super-GUT model, special attention must be paid to avoiding the Scylla of rapid proton decay and the Charybdis of an excessive density of cold dark matter, while also having an acceptable mass for the Higgs boson. We do not find consistent solutions if none of the matter and Higgs fields are assigned to twisted chiral supermultiplets, even in the presence of Giudice-Masiero terms. However, consistent solutions may be found if at least one fiveplet of GUT Higgs fields is assigned to a twisted chiral supermultiplet, with a suitable choice of modular weights. Spin-independent dark matter scattering may be detectable in some of these consistent solutions.

show abstract

Observable proton decay in flipped SU(5)

Mehmood

Rehman

Shafi

2021

J. High Energ. Phys.

View full text Add to dashboard Cite

We explore proton decay in a class of realistic supersymmetric flipped SU(5) models supplemented by a U(1)R symmetry which plays an essential role in implementing hybrid inflation. Two distinct neutrino mass models, based on inverse seesaw and type I seesaw, are identified, with the latter arising from the breaking of U(1)R by nonrenormalizable superpotential terms. Depending on the neutrino mass model an appropriate set of intermediate scale color triplets from the Higgs superfields play a key role in proton decay channels that include p → (e+, μ+) π0, p → (e+, μ+) K0, p →$$ \overline{v}{\pi}^{+} $$ v ¯ π + , and p →$$ \overline{v}{K}^{+} $$ v ¯ K + . We identify regions of the parameter space that yield proton lifetime estimates which are testable at Hyper-Kamiokande and other next generation experiments. We discuss how gauge coupling unification in the presence of intermediate scale particles is realized, and a Z4 symmetry is utilized to show how such intermediate scales can arise in flipped SU(5). Finally, we compare our predictions for proton decay with previous work based on SU(5) and flipped SU(5).

show abstract

SU(5) grand unification in pure gravity mediation

Cited by 31 publications

References 143 publications

The super-GUT CMSSM revisited

The super-GUT CMSSM revisited

No-scale SU(5) super-GUTs

Observable proton decay in flipped SU(5)

Contact Info

Product

Resources

About