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It was recently claimed that the observed physical neutrinos cannot be of Majorana type because such particles lack vector interactions. Contrary to this claim we show that if the Majorana neutrino is massless it is indistinguishable from…

High Energy Physics - Phenomenology · Physics 2007-05-23 Steen Hannestad

The existence of a neutrino magnetic moment implies contributions to the neutrino mass via radiative corrections. We derive model-independent "naturalness" upper bounds on the magnetic moments of Dirac neutrinos, generated by physics above…

High Energy Physics - Phenomenology · Physics 2009-11-11 Nicole F. Bell , V. Cirigliano , M. J. Ramsey-Musolf , P. Vogel , Mark B. Wise

We consider the Dirac equation for a finite-size neutron in an external electric field. We explicitly incorporate Dirac-Pauli form factors into the Dirac equation. After a non-relativistic reduction, the Darwin-Foldy term is cancelled by a…

Nuclear Theory · Physics 2016-09-08 M. Bawin , S. A. Coon

The nature of a neutrino, whether it is a Dirac type or Majorana type, may be comprehensively probed using their quantum statistical properties. If the neutrino is a Majorana fermion, then by definition it is identical and indistinguishable…

High Energy Physics - Phenomenology · Physics 2022-07-05 C. S. Kim , M. V. N. Murthy , Dibyakrupa Sahoo

We consider a massive Dirac neutrino electric charge and magnetic moment within the context of the standard model supplied with SU(2)-singlet right-handed neutrino in arbitrary R_\xi gauge. Using the dimensional-regularization scheme we…

High Energy Physics - Phenomenology · Physics 2008-07-31 Maxim Dvornikov , Alexander Studenikin

We analyze the implications of neutrino masses for the magnitude of neutrino magnetic moments. By considering electroweak radiative corrections to the neutrino mass, we derive model-independent naturalness upper bounds on neutrino magnetic…

High Energy Physics - Phenomenology · Physics 2008-11-26 Mikhail Gorchtein , Nicole F. Bell , Michael J. Ramsey-Musolf , Petr Vogel , Peng Wang

We analize the non-cyclic geometric phase for neutrinos. We find that the geometric phase and the total phase associated to the mixing phenomenon provide a tool to distinguish between Dirac and Majorana neutrinos. Our results hold for…

High Energy Physics - Phenomenology · Physics 2018-04-03 A. Capolupo , S. M. Giampaolo , B. C. Hiesmayr , G. Vitiello

Electromagnetic properties of diquarks are investigated in the framework of a color-octet Nambu-Jona-Lasinio model, which describes baryons as bound states of diquarks and quarks. We calculate the electromagnetic form factors of scalar and…

High Energy Physics - Phenomenology · Physics 2009-09-25 C. Weiss , A. Buck , R. Alkofer , H. Reinhardt

The 2$\nu$-mediated force has a range of microns, well beyond the atomic scale. The effective potential is built from the t-channel absorptive part of the scattering amplitude and depends on neutrino properties on-shell. We demonstrate that…

High Energy Physics - Phenomenology · Physics 2020-05-20 Alejandro Segarra , Jose Bernabeu

A Majorana mass term for the $\tau$ neutrino would induce neutrino - antineutrino mixing and thereby a process which violates fermion number by two units. We study the possibility of distinguishing between a massive Majorana and a Dirac…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Carena , B. Lampe , C. E. M. Wagner

We study the electromagnetic contribution to elastic neutrino-proton and neutrino-neutron scattering processes. The neutrino electromagnetic charge, magnetic, electric, and anapole form factors of both diagonal and transition types in the…

High Energy Physics - Phenomenology · Physics 2023-02-13 Konstantin Kouzakov , Fedor Lazarev , Alexander Studenikin

In this paper, we carry out the canonical quantization of the field theory of an interacting tachyonic Majorana neutrino. We show how micro-causality is preserved in the physical scattering matrix elements between the in and out vacua. The…

High Energy Physics - Phenomenology · Physics 2009-11-07 Ngee-Pong Chang

The interaction of neutrinos with gravitational fields in the weak field regime at one loop to the leading order has been studied by Menon and Thalappilil. They deduced some theoretical differences between the Majorana and Dirac neutrinos.…

High Energy Physics - Phenomenology · Physics 2016-08-16 S. A. Alavi , A. Abbasnezhad

A future multi-TeV muon collider would provide an important probe for Majorana neutrinos. A muon collider with a collision energy of $\sim$30 TeV would be sensitive to $\nu_e-\nu_\mu$ transition dipole moments of the order of $\sim…

High Energy Physics - Phenomenology · Physics 2024-12-13 Michele Frigerio , Natascia Vignaroli

The neutrino magnetic and electric moments are zero at tree level but can arise in radiative corrections. Any deviation from the Standard Model prediction would provide another indication of neutrino-related new physics in addition to the…

High Energy Physics - Phenomenology · Physics 2023-05-03 Shao-Feng Ge , Pedro Pasquini

Exact expression is obtained for the differential cross section of elastic electroweak scattering of longitudinal polarized massive Dirac neutrinos with the electric charge and anomalous magnetic moment on a spinless nucleus. This formula…

High Energy Physics - Phenomenology · Physics 2011-02-01 Rasulkhozha S. Sarafiddinov

In the quasielastic region, we investigate the effect of neutrino electromagnetic properties constrained from the recent experiments on the electroweak neutral current reaction process of the neutrino-$^{12}$C scattering. For a relativistic…

Nuclear Theory · Physics 2024-08-08 K. S. Kim , P. T. P. Hutauruk , Seung-il Nam , Chang Ho Hyun

The observed flavor oscillations of solar and atmospheric neutrinos determine several elements of the leptonic mixing matrix, but leave open the small mixing angle Theta_13, a possible CP-violating phase, the mass ordering, the absolute…

Astrophysics · Physics 2017-08-23 G. G. Raffelt

Precise knowledge of the nucleon's axial-current form factors is crucial for modeling GeV-scale neutrino-nucleus interactions. Unfortunately, the axial form factor remains insufficiently constrained to meet the precision requirements of…

Nuclear Theory · Physics 2020-11-04 Xilin Zhang , T. J. Hobbs , Gerald A. Miller

To one loop the effective neutrino photon interaction takes place through the vector-vector type and the axialvector-vector type amplitude. In this work we explicitly write down the form of the axialvector-vector amplitude to all orders in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Kaushik Bhattacharya , Avijit K. Ganguly