1201.3996 (S. Bilmis et al.)

Constraints on Non-Commutative Physics Scale with Neutrino-Electron
Scattering    [PDF]

S. Bilmis, M. Deniz, H. B. Li, J. Li, H. Y. Liao, S. T. Lin, V. Singh, H. T. Wong, I. O. Yildirim, Q. Yue, M. Zeyrek

Neutrino-electron scatterings ($\nu - e$) are purely leptonic processes with robust Standard Model (SM) predictions. Their measurements can therefore provide constraints to physics beyond SM. Non-commutative (NC) field theories modify space-time commutation relations, and allow neutrino electromagnetic couplings at the tree level. Their contribution to neutrino-electron scattering cross-section was derived. Constraints were placed on the NC scale parameter $\Lambda_{NC}$ from $\nu - e$ experiments with reactor and accelerator neutrinos. The most stringent limit of $\Lambda_{NC} > 3.3 TeV$ at 95% confidence level improves over the direct bounds from collider experiments.

View original: http://arxiv.org/abs/1201.3996