Constraints on a noncommutative physics scale with neutrino-electron scattering

Abstract

Neutrino-electron scatterings (ν − 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 ΛNC from ν − e experiments with reactor and accelerator neutrinos. The most stringent limit of ΛNC > 3.3 TeV at 95% confidence level improves over the direct bounds from collider experiments.

Constraints on dark photon from neutrino-electron scattering experiments

“…Our earlier works include studies of non-standard interaction parameters as well as unparticle and non-commutative physics [22,23]. The dark photon contributions as well as its interference effects with the Standard Model are explored in the next section.…”

Constraints on scalar-pseudoscalar and tensorial nonstandard interactions and tensorial unparticle couplings from neutrino-electron scattering

“…The scalar and pseudoscalar NSI parameters g e,e S,P given in Eq. (7) and Eq. (8) are the fitting variables in the minimum-χ 2 analysis.…”

“…Neutrino-electron scattering provides quite convenient channel for testing the SM of electroweak theory, especially in low-energy regime since it is a pure leptonic process [5][6][7][8][9]. Advanced systems capable of making measurements at low energy and low background are necessary to observe neutrino interactions with good experimental precision.…”

Bounds on the scale of noncommutativity from mono photon production in ATLAS Runs -1 and -2 experiments at LHC energies

“…In fact, in the context of high energies particle physics, several constraints were obtained by many authors using the various collider experimental data such as LEP [2], LHC [3] and Tevatron [4]. Other experimental bounds and projected sensitivities for the future colliders are discussed in [5]. It should be noted that a very high bounds are obtained for several constructions of the non-commutative theories in ultra-precision experiments at low energies and astrophysical systems.…”