Neutrino dipole moments and charge radii in noncommutative spacetime
Abstract
In this paper we obtain a bound $\Lambda_{\rm NC} < 150$ TeV on the scale of spacetime noncommutativity considering photonneutrino interactions. We compute "stardipole moments" and "starcharge radii" originating from spacetime noncommutativity and compare them with the dipole moments calculated in the neutrinomass extended standard model (SM). The computation depends on the nature of the neutrinos, Dirac versus Majorana, their mass and the energy scale. We focus on Majorana neutrinos. The "starcharge radius" is found to be $r^* = \sqrt{< r^2_{\nu}>_{\rm NC}} =3\sum_{i=1}^3 ({\theta}^{0i})^2^{1/4} < 1.6 \times 10^{19}$ cm at $\Lambda_{\rm NC} = 150$ TeV.
 Publication:

arXiv eprints
 Pub Date:
 February 2003
 arXiv:
 arXiv:hepth/0302175
 Bibcode:
 2003hep.th....2175M
 Keywords:

 High Energy Physics  Theory
 EPrint:
 6 pages