Published January 1, 2012
| Version v1
Journal article
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Constraints on a noncommutative physics scale with neutrino-electron scattering
Creators
- 1. Acad Sinica, Inst Phys, Taipei 11529, Taiwan
- 2. Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
- 3. Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey
Description
Neutrino-electron scatterings (nu - e) are purely leptonic processes with robust standard model predictions. Their measurements can therefore provide constraints to physics beyond the standard model. Noncommutative (NC) field theories modify space-time commutation relations, and allow neutrino electromagnetic couplings at the tree level. Their contribution to the 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.
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