Study of low-energy neutrino factory at the Fermilab to DUSEL baseline

Abstract

This note constitutes a Letter of Interest to study the physics capabilities of, and to develop an implementation plan for, a neutrino physics program based on a Low-Energy Neutrino Factory at Fermilab providing a ν beam to a detector at the Deep Underground Science and Engineering Laboratory.It has been over ten years since the discovery of neutrino oscillations [1] established the existence of neutrino masses and leptonic mixing. Neutrino oscillations thus provide the first evidence of particle physics beyond the Standard Model. Most of the present neutrino oscillation data are well described by the 3ν mixing model. While a number of the parameters in this model have already been measured, there are several key parameters that are still unknown, namely, the absolute neutrino mass scale, the precise value of the mixing angles, the CP phase δ and hence the presence or absence of observable CP-violation in the neutrino sector. Future measurements of these parameters are crucial to advance our understanding of the origin of neutrino masses and of the nature of flavor in the lepton sector. The ultimate goal of a program to study neutrino oscillations goes beyond a first measurement of parameters, and includes a systematic search for clues about the underlying physics responsible for the tiny neutrino masses, and, hopefully, the origin of the observed flavor structure in the Standard Model, as well as the possible source of the observed matter-antimatter asymmetry in the Universe. To achieve this goal will almost certainly require precision measurements that go well beyond the presently foreseen program.

The discovery reach ofCPviolation in neutrino oscillation with non-standard interaction effects

“…As recent reactor neutrino experiments indicates large value of θ 13 it is important to study the discovery potential of CP violation in neutrino oscillation experiments in low energy neutrino factory [31]. There are some studies on the performance of low energy neutrino factories [15] in the context of standard model interactions of neutrinos with matter [29,[31][32][33][34][35][36][37][38] and also in presence of NSI [39][40][41][42][43]. In the works related to NSI [39][40][41][42][43] longer baselines like 4000 and 7500 kms has been considered to have larger NSI effect on neutrino oscillation experiments so as to find better NSI sensitivity and in that context CP violation has also been studied.…”

nuSTORM - Neutrinos from STORed Muons: Letter of Intent to the Fermilab Physics Advisory Committee

“…In [265] the feasibility of electron charge identification was studied in the context of a low energy NF for a TASD in a 0.5 T magnetic filed using a so-called magnetic cavern. It soon was speculated that a magnetized LAr detector should be suitable as well [266][267][268][269]. Note, that the detectors most likely will have to be deep underground due to the large duty factor of stored particle beams in a NF.…”

Discovery reach of CP violation in neutrino oscillation experiments with standard and non-standard interactions

“…As recent reactor neutrino experiments indicates large value of θ 13 it is important to study the discovery potential of CP violation in neutrino oscillation experiments in low energy neutrino factory [31]. There are some studies on the performance of low energy neutrino factories [15] in the context of standard model interactions of neutrinos with matter [29,[31][32][33][34][35][36][37][38] and also in presence of NSI [39][40][41][42][43]. In the works related to NSI [39][40][41][42][43] longer baselines like 4000 and 7500 kms has been considered to have larger NSI effect on neutrino oscillation experiments so as to find better NSI sensitivity and in that context CP violation has also been studied.…”