International Workshop on Neutrino Factories, Super Beams and Beta Beams

Quasi-elastic neutrino scattering is a valuable tool for determining the neutrino beam energy in oscillation experiments and provides a means of studying multi-nucleon final states. Disagreements exist between measurements for neutrino energies below 1 GeV on scintillator and those at higher energies. MINERvA (Main INjector Experiment for v-A) is a neutrino scattering experiment in the NuMI high intensity neutrino beam at Fermilab. MINERvA provides a bridge between the two regimes. We will present our first results for charged current quasi-elastic scattering for both neutrino and anti-neutrinos on scintillator.

The liquid argon TPC (LArTPC) is a novel technique that provides excellent energy and spacial resolution and is an optimal tool to study neutrino-nucleus interactions. ArgoNeuT was the first LArTPC placed in a low energy neutrino beam. During the 5 months of running, ArgoNeuT accumulated several thousand neutrino and antineutrino interactions in the liquid argon. In this talk, I will discuss the latest results from ArgoNeuT, including inclusive CC cross sections and studies of final-state interactions and short-range correlations.

The NuMI Off-Axis $\nu_e$ Appearance (\nova) experiment, currently under construction, is a long-baseline neutrino oscillation experiment optimized for the measurement of $\nu_\mu \rightarrow \nu_e$ appearance.  The experiment consists of two nearly identical fully-active liquid-scintillator tracking calorimeter detectors separated by 810 km and exposed to an upgraded 700 kW NuMI beam from Fermi National Laboratory.  Goals of the experiment include measurements of $\theta_{13}$, resolution of the neutrino mass hierarchy, measurement of the CP-violating angle $\delta_{\mathrm{CP}}$, and the octant of the $\theta_{23}$ mixing angle.  This talk will provide an overview of the detectors, physics goals and sensitivities of the experiment, and a first look at commissioning data from the far detector.

The Neutrino Factory 4MW target system is optimized to increase the captured muon count that fits within the acceptance of the subsequent acceleration section. A proposed staged Neutrino Factory, producing lower muon intensities of 10^20 muons per year assumes a 1 MW target station. The proton driver of the scaled down target station has a lower intensity and lower energy (3 GeV)  which could be upgraded to the full power of 4 MW. In this work we present an optimized capture mechanism for both the baseline 8 GeV proton beam target and the 3GeV proton beam target. The capture section and the following bunching channel design are optimized to adapt for both cases.

The LAGUNA-LBNO European design study aims at defining a deep underground neutrino observatory for the study of neutrino oscillations at long baselines, the investigation of the Grand Unification of elementary forces and for the detection of known and unknown astrophysical sources of neutrinos. For the neutrino oscillation studies, the project is specifically considering long baseline neutrino beams from CERN towards two possible far sites, Fréjus (130 km) and Pyhäsalmi (2300 km) with three detector technologies, Water Cherenkov, Liquid Scintillator and Liquid Argon.
The design study work findings and physics case led the consortium to select as a first priority option a very long baseline of 2300 km with a muti-GeV neutrino beam produced at CERN towards the Pyhäsalmi underground site and a large Liquid Argon TPC with double phase readout and a mass of 20 kton as a first phase. This LBNO setup allows for effectively measuring the oscillation patterns as a function of the energy over the first and the second maxima, assessing the neutrino oscillation phenomenology with an optimal sensitivity to the mass hierarchy determination and a competitive CP search reach. 
A unique possibility of having a second neutrino beam from Protvino accelerator complex to Pyhäsalmi (1160 km) is also considered. The physics reach and performances of the neutrino detectors with the various neutrino beam options will be reviewed together with the LAGUNA-LBNO perspectives and status.

The NuMI Off-Axis $\nu_e$ Appearance (\nova) experiment is a long-baseline neutrino oscillation experiment optimized for the measurement of $\nu_\mu \rightarrow \nu_e$ appearance. A prototype 220 ton liquid-scintillator tracking calorimeter near detector, built and operated on the surface, was exposed to the NuMI beam at Fermi National Laboratory. This detector was placed at a far off-axis angle of 106 mrad, where neutrinos above 1.5 GeV are predominantly born from kaons produced in the neutrino target. A 300 ton underground near detector, which will provide an opportunity for precise measurements of neutrino scattering off carbon nuclei, is currently under construction at Fermilab at a 14 mrad off-axis from the NuMI beam. This talk will provide an overview of the detectors and neutrino scattering analyses performed and expected in the future.

A neutrino factory provides a well defined neutrino beam with a wide
range of oscillation channels for the direct detection of CP violation
in the neutrino sector. To make use of this beam, a detector must have
excellent charge discrimination capabilities because the
un-oscillated background has the same flavour, but with the opposite
charge to the signal. A magnetic field is required to achieve the
required charge discrimination. The most reliable method for the
generation of a magnetic field over a volume required for a neutrino
factory experiment is using a Magnetized Iron Neutrino Detector
(MIND).	A detailed simulation of a MIND has been developed for the
neutrino factory with advanced reconstruction and analysis software
for the identification of muons resulting from the appearance of muon
neutrinos from electron neutrino oscillations.  The sensitivity of
MIND at a neutrino factory to CP violating effects in this appearance
oscillation is discussed, with consideration of	systematic
uncertainties. The combination of this detector concept at a neutrino
factory provides the best sensitivity to CP violation of all possible future
experiments and the best accuracy in the measurement of the CP violating
phase delta.

The value of the last mixing angle theta13 has been measured the Daya Bay Reactor Neutrino Experiment, followed by consistent results from RENO and Double Chooz. Its large value, compared with most speculated values before its discovery, creates a unique opportunity in resolving neutrino mass hierarchy (MH) using medium-baseline reactor antineutrino experiments employing massive liquid scintillator (LS) detectors like JUNO and RENO-50. Such medium-baseline reactor experiments have both the solar and the atmospheric oscillation signals presented in their data. Due to the nature of the MH signal in such experiments and the small ratio between the solar and the atmospheric mass-squared differences, we find the energy scale uncertainty places a challenge besides the well-known factors like energy resolution. Under a certain class of energy non-linearity biases allowed by its uncertainty, normal hierarchy (NH) and inverted hierarchy (IH) can exhibit similar oscillation patterns in a LS detector. To make such experiments successful in resolving neutrino MH with high confidences, energy scale uncertainty needs to be constrained well. In addition to the energy scale challenge, we also find that the MH determination confidence level and the so-called delta-chi-square obtained in model comparison follow a different relation from the conventional squared-root one. To reach the same confidence levels, compared with physics quantities whose measurements can be approximated by normal distributions, larger chi-square differences are needed.

Analyses of neutrino mass hierarchy determinations at future experiments determine an expected Delta Chi^2.  As the hierarchy is a discrete choice, and not a continuous degree of freedom, this Delta Chi^2 does not obey Wilks' theorem.  As a consequence it does not follow a chi^2 distribution and its square root is not the number s of sigmas of confidence that can be expected.  I will present a simple formula for s as a function of the expected value of Delta chi^2.

IceCube and its low energy extension DeepCore have been deployed at the South Pole and taking data since early 2011.  DeepCore provides a neutrino energy threshold of about 10 GeV, which allows IceCube to access a rich variety of physics including indirectly searching for WIMP dark matter and studying atmospheric neutrinos. Currently under consideration is a new in-fill array named PINGU, which will continue to lower the threshold for neutrino detection.  This new lower threshold opens up opportunities to explore a great deal of new physics, including the determination of the neutrino mass hierarchy.  This talk will discuss the PINGU detector and the new physics it makes available with a focus on the hierarchy measurement.

To be supplied

MINERvA is a few-GeV neutrino-nucleus scattering experiment located in the high intensity NuMI beam line at Fermilab. The goal of MINERvA is to make precise measurements of low energy neutrino interactions, both in support of neutrino oscillation experiments and as a pure weak probe of the nuclear medium. Employing a fine-grained, high resolution detector composed of plastic scintillator as well as carbon, iron and lead targets, MINERvA is well-suited to study inclusive and exclusive pion production channels.  This presentation will focus on pion production from plastic scintillator.

We report on the study of photon emission induced by E_nu ∼ 1 GeV (anti)neutrino neutral current interactions with nucleons and nuclei. This process is an important background for nu_e appearance oscillation experiments. At the relevant energies, the reaction is dominated by the excitation of the ∆(1232) resonance, but there are also non-resonant contribution, that, close to threshold, are fully determined by the effective chiral Lagrangian of strong interactions. In addition, we also consider the heavier resonances contributions in high energy region. With our model, we predict the events number of photon emission of the NC interactions in the MiniBooNE experiments and T2K experiment.

The talk will present the current status of a dedicated feasibility study “Oscillation Research with Cosmics in the Abyss” (ORCA) to evaluate the potential of a neutrino mass hierarchy measurement with “phase 1” of KM3NeT, the future multi-km3 water Cherenkov neutrino telescope in the Mediterranean.

MINERvA is a few GeV neutrino-nucleus scattering experiment located in the high intensity NuMI beam line at Fermilab. MINERvA aims to make precision measurements of low energy neutrino interactions, both in support of neutrino oscillation experiments and as a pure weak probe of the nuclear medium. The experiment employs a fine-grained, high resolution detector. The active region is composed of plastic scintillator with additional targets of helium, carbon, iron, lead and water placed upstream of the active region. We present preliminary results for inclusive charged current cross sections on iron, lead and plastic targets.

If the standard model is an effective model of a fundamental theory realized at high energy scales, the full Lagrangian that describes physics at the electroweak scale should contain the series of higher-dimensional operators whose mass dimensions are higher than four. Such effective interactions suppressed by the inverse power of new physics scale $\Lambda_{NP}$ are typical low-energy remnant of new physics at high energy scales

In this talk, we focus on dim=9 operators which contribute to the neutrinoless double beta decay (0n2b) process. An interesting observation is that the next generation 0n2b experiments, which are aimed at discovering the effective neutrino mass of O(0.1) eV, are also sensitive to the dim=9 operators with $Lambda_{NP}$=O(1) TeV. With a list of the possible high-energy --- TeV scale --- completions of the effective dim=9 operators, we discuss the complementarity between the 0n2b signal and the LHC observables, and seek the relation between the dim=9 operators and the existent models, such as radiative neutrino mass models.

This talk will be devoted to the precision measurements of Coherent-Rho0
production in neutrino neutral current scattering. The new results from
the NOMAD data will be presented,  which shows the first observation of
Coherent-Rho0. Future prospects of such measurements in the proposed
high-resolution LBNE-ND will be outlined.

Status and preliminary result of the Coherent-Rho production
in NOMAD is presented. Prospect of future measurements and
its implication is briefly described.

New results from the NA61/SHINE experiment on the determination of charged hadron yields in proton-carbon interactions are presented. They aim to improve predictions of the neutrino flux in the T2K experiment. Analysis is based on the main dataset collected by NA61/SHINE in the year 2009.
The data were recorded using a secondary-proton beam of 31 GeV/c momentum from CERN SPS which impinges on a graphite target. To determine the inclusive production cross-section for charged pions, kaons and protons the thin (0.04 λI ) target was exploited. Results of this measurement are used in the T2K beam simulation program to reweight hadron yields in the interaction vertex. At the same time, NA61/SHINE results obtained with the T2K replica target (1.9 λI ) allow to constrain hadron yields at the surface of the target. It would correspond to the constraint up to 90% of the neutrino flux, thus reducing significantly a model dependence of the neutrino beam prediction. All measured spectra are compared to predictions of hadron production models.
In addition a status of the analysis of data collected by NA61/SHINE for the NuMI target (Fermilab) is reviewed. These data will be used further in neutrino beam calculations for the MINERvA, MINOS(+) and LBNE experiments.

The fixed-target Main Injector Particle Production (MIPP) Experiment was designed to produce large sets of hadron production data on variety of nuclear targets using a range of beam particles and momenta.  The spectrometer has excellent momentum resolution, and particle identification is determined for particles ranging between 0.3 - 80 GeV/c using $dE/dx$, time-of-flight and Cherenkov radiation measurements.  MIPP collected $\sim1.6x10^6$ events of 120 GeV Main Injector protons striking a spare NuMI target.  This talk will review the experimental setup, performance of the detectors, and preliminary results of the measurement of pion and Kaon yields from the NuMI target data.