Proton decay in a consistent supersymmetric GUT model

Emmanuel-Costa, David; Wiesenfeldt, Sören

doi:10.1016/s0550-3213(03)00301-8

Cited by 84 publications

(124 citation statements)

References 33 publications

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“…The reason for this is that the 144(144) arise via a constraint on the reducible vector spinor 160 (160). Thus the 160 vector-spinors has an expansion in SU(5) oscillator modes so that:…”

Section: Appendix a Mathematical Aspects Of Su(5) And So(10) Unificamentioning

confidence: 99%

Proton stability in grand unified theories, in strings and in branes

Nath

Pérez²

2007

Physics Reports

452

571

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A broad overview of the current status of proton stability in unified models of particle interactions is given which includes non-supersymmetric unification, SUSY and SUGRA unified models, unification based on extra dimensions, and string-M-theory models. The extra dimensional unification includes 5D and 6D and universal extra dimensional (UED) models, and models based on warped geometry. Proton stability in a wide array of string theory and M theory models is reviewed. These include Calabi-Yau models, grand unified models with Kac-Moody levels k > 1, a new class of heterotic string models, models based on intersecting D branes, and string landscape models. The destabilizing effect of quantum gravity on the proton is discussed. The possibility of testing grand unified models, models based on extra dimensions and string-M-theory models via their distinctive modes is investigated. The proposed next generation proton decay experiments, HyperK, UNO, MEMPHYS, ICARUS, LANNDD (DUSEL), and LENA would shed significant light on the nature of unification complementary to the physics at the LHC. Mathematical tools for the computation of proton lifetime are given in the appendices. Prospects for the future are discussed.

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“…The reason for this is that the 144(144) arise via a constraint on the reducible vector spinor 160 (160). Thus the 160 vector-spinors has an expansion in SU(5) oscillator modes so that:…”

Section: Appendix a Mathematical Aspects Of Su(5) And So(10) Unificamentioning

confidence: 99%

Proton stability in grand unified theories, in strings and in branes

Nath

Pérez²

2007

Physics Reports

452

571

View full text Add to dashboard Cite

show abstract

“…The operators have to be evolved from the GUT scale down to the hadronic scale, which is described by the factor A = A SD · A LD . It contains both a short-distance contribution A SD = 2.37, for the evolution from the GUT scale to the SUSY-breaking scale, and a long-distance contribution A LD = 1.43, for the evolution from the SUSY-breaking scale to 1 GeV [13]. The effect of lepton masses is neglected.…”

Section: Decay Rates and Branching Ratiosmentioning

confidence: 99%

Flavour Structure and Proton Decay in 6D Orbifold GUTs

Buchmüller

Covi

Emmanuel-Costa³

et al. 2004

J. High Energy Phys.

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We study proton decay in a supersymmetric SO(10) gauge theory in six dimensions compactified on an orbifold. The dimension-5 proton decay operators are forbidden by R-symmetry, whereas the dimension-6 operators are enhanced due to the presence of KK towers. Three sequential quark-lepton families are localised at the three orbifold fixed points, where SO(10) is broken to its three GUT subgroups. The physical quarks and leptons are mixtures of these brane states and additional bulk zero modes. This leads to a characteristic pattern of branching ratios in proton decay, in particular the suppression of the p → µ + K 0 mode.

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“…Furthermore, the proton decay rate for M V = M GUT is far below the detection limit that can be reached within the next years [29].…”

Section: Proton Decay Supressionmentioning

confidence: 91%

Radiative mass generation and suppression of supersymmetric contributions to flavor changing processes

Ferrandis

2004

Phys. Rev. D

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We explore the possibility that the masses for the first two generations of fermions and the quark flavor violation are generated radiatively in the Minimal Supersymmetric Standard Model. We assume that the source of all flavor violation resides in the the supersymmetry breaking sector and is transmitted radiatively to the Standard Model fermion sector through finite corrections at low energy. The approximate radiative alignment between the Yukawa and soft supersymmetry breaking matrices, helps to suppress some of the supersymmetric contributions to flavor changing processes, overcoming current experimental constraints. This mechanism may also explain the non-observation of proton decay, since flavor conservation in the superpotential would imply the suppression of dimension five operators in supersymmetric grand unified theories.

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Proton decay in a consistent supersymmetric GUT model

Cited by 84 publications

References 33 publications

Proton stability in grand unified theories, in strings and in branes

Proton stability in grand unified theories, in strings and in branes

Flavour Structure and Proton Decay in 6D Orbifold GUTs

Radiative mass generation and suppression of supersymmetric contributions to flavor changing processes

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