Large neutrino magnetic dipole moments in MSSM extensions

Aboubrahim, Amin; Ibrahim, Tarek; Itani, Ahmad; Nath, Pran

doi:10.1103/physrevd.89.055009

Cited by 17 publications

(13 citation statements)

References 80 publications

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“…The Matsubara Green function can be derived from expressions (10), (11) by the substitution (12) where the imaginary time parameter is (13) Without loss of generality, we consider the case of a charge-symmetric electron-positron plasma when the chemical potential is zero. When necessary, the general case can always be reconstructed from that considered here by introducing the chemical potential into the corresponding distribution function.…”

Section: Contribution From a Charged Weak Currentmentioning

confidence: 99%

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Spin and dispersion of a massive Dirac neutrino in a magnetized plasma

Eminov

2016

J. Exp. Theor. Phys.

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The total energy shift of a polarized massive Dirac neutrino in an electron-positron plasma in a constant magnetic field is investigated. The calculation in the Feynman gauge is performed for the first time by using the Matsubara temperature Green functions. The dependence of the dispersion relation and the anomalous magnetic moment of the neutrino on the magnetic field strength, spin, energy, direction of motion, neutrino mass, and the plasma parameters is analyzed. The results of investigations for the massive neutrino in the limiting case are compared with those obtained earlier by other authors for the massless left neutrino.

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Section: Contribution From a Charged Weak Currentmentioning

confidence: 99%

“…For astrophysics and the physics of neutrinos, the "consistency" of the small mass and the large magnetic moment of the neutrino remains an important problem [11][12][13]. In the minimally extended standard Weinberg-Salam-Glashow model, the static anomalous magnetic moment of the Dirac neutrino with mass m ν is defined as [14] (1)…”

Section: Introductionmentioning

confidence: 99%

Spin and dispersion of a massive Dirac neutrino in a magnetized plasma

Eminov

2016

J. Exp. Theor. Phys.

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“…That is why in well-studied models without such a mechanism, like the left-right symmetric model [22] and the supersymmetric model [23], the NMM predictions are far from being detected in next-generation experiments. On the other hand, a recent parameter study in the framework of the minimal supersymmetric model found room for large NMM [24], but does not solve the fine-tuning problem.…”

Section: Jhep07(2017)139mentioning

confidence: 99%

Revisiting large neutrino magnetic moments

Lindner

Radovčić

Welter

2017

J. High Energ. Phys.

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Current experimental sensitivity on neutrino magnetic moments is many orders of magnitude above the Standard Model prediction. A potential measurement of nextgeneration experiments would therefore strongly request new physics beyond the Standard Model. However, large neutrino magnetic moments generically tend to induce large corrections to the neutrino masses and lead to fine-tuning. We show that in a model where neutrino masses are proportional to neutrino magnetic moments. We revisit, discuss and propose mechanisms that still provide theoretical consistent explanations for a potential measurement of large neutrino magnetic moments. We find only two viable mechanisms to realize large transition magnetic moments for Majorana neutrinos only.

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“…Further, vectorlike multiplets arise in a variety of settings such as in grand unified models and in string and D brane models [8,10,11]. Vectorlike generations have been considered by several authors since their discovery would constitute new physics (see, e.g., [9,10,11,12,13,14,15,16,17,18,19,20,21,22]). Such models have new sources of CP violation and thus can generate substantial size dipole operators.…”

Section: Introductionmentioning

confidence: 99%

Chromoelectric dipole moments of quarks in MSSM extensions

et al. 2015

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An analysis is given of the chromoelectric dipole moment of quarks and of the neutron in an MSSM extension where the matter sector contains an extra vectorlike generation of quarks and mirror quarks. The analysis includes contributions to the CEDM from the exchange of the W and the Z bosons, from the exchange of charginos and neutralinos and the gluino. Their contribution to the EDM of quarks is investigated. The interference between the MSSM sector and the new sector with vectorlike quarks is investigated. It is shown that inclusion of the vectorlike quarks can modify the quark EDMs in a significant way. Further, this interference also provides a probe of the vectorlike quark sector. These results are of interest as in the future measurements on the neutron EDM could see an improvement up to two orders of magnitude over the current experimental limits and provide an instrument for a further probe of new physics beyond the standard model.

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Large neutrino magnetic dipole moments in MSSM extensions

Abstract: An analysis of the Dirac neutrino magnetic moment with standard model interactions gives

Cited by 17 publications

References 80 publications

Spin and dispersion of a massive Dirac neutrino in a magnetized plasma

Spin and dispersion of a massive Dirac neutrino in a magnetized plasma

Revisiting large neutrino magnetic moments

Chromoelectric dipole moments of quarks in MSSM extensions

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