Present and future bounds on non-standard neutrino interactions

By S. Davidson, C. Peña-Garay, N. Rius, Arcadi Santamaria. 2003

275 citations recorded by the source corpus.

We consider Non-Standard neutrino Interactions (NSI), described by four-fermion operators of the form (αγνβ)(γf), where f is an electron or first generation quark. We assume these operators are generated at dimension ≥ 8, so the related vertices involving charged leptons, obtained by an SU(2) transformation νδ→eδ, do not appear at tree level. These related vertices necessarily arise at one loop, via W exchange. We catalogue current constraints from sin 2θW measurements in neutrino scattering, from atmospheric neutrino observations, from LEP, and from bounds on the related charged lepton operators. We estimate future bounds from comparing KamLAND and solar neutrino data, and from measuring sin 2θW at the near detector of a neutrino factory. Operators constructed with νμ and νe should not confuse the determination of oscillation parameters at a νfactory, because the processes we consider are more sensitive than oscillations at the far detector. For operators involving ντ, we estimate similar sensitivities at the near and far detector.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/bf377f5eb6e04b913d2e4793a59e8e1c8e04ab1d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

From the Trees to the Forest: A Review of Radiative Neutrino Mass Models (2017, unknown): “, the new singly-charged scalar via the eﬀective operator in Eq. 39 induces neutrino interactions that cannot be described by W-boson exchange and are termed non-standard neutrino interactions (NSIs) [429]. Equation 39 is usually rewritten after a Fierz identity as LNSI d=6 = 2 √ 2GF ε ρσ αβ (ναγ µP”
Global Analyses of Neutrino Oscillation Experiments (2015, result): “ 8B measurement in Borexino seem to show evidence of the low energy turn-up of the spectrum predicted in the standard LMA MSW; comparing the results in Fig. 7 with the bounds on NSI derived in Refs. [83, 84] from non-oscillation data we ﬁnd that, with the possible exception of "u;d e, the globa”
Constraints on flavor-diagonal non-standard neutrino interactions from Borexino Phase-II (2019, unknown): “[52, 54–56].”
Probing new physics with coherent neutrino scattering off nuclei (2005, background): “7 × 10, derived from μ− e conversion on nuclei [8], which motivates us to perform our analysis only for flavor changing NSI parameters that includes tau-neutrinos in the final state, ε τe and ε dV τe .”
Updated constraints on non-standard interactions from global analysis of oscillation data (2018, background): “[10–12]).”
Neutrino non-standard interactions: A status report (2019, background): “(1) arise from higher dimensional d = 8 operators with two Higgs fields, once the vacuum expectation value of the Higgs field is inserted, then it is possible that nonstandard interactions arise only in the neutrino sector, and not in the charged lepton sector [41,42].”
The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe (2013, background): “The gray shaded regions indicate the current model-independent limits on the different parameters at 3σ [172,173].”
Determination of matter potential from global analysis of neutrino oscillation data (2013, background): “ities and not intrinsic NSI features. Neutrino scattering experiments such as CHARM [94,95], CDHSW [96] and NuTeV [97] are sensitive to NSI with uand d, and can therefore yield information on "f [98]. In Ref. [73] it was found that the combination with CHARM scattering results [94,95] for f= ds”