Description
Chair: Masaki Ishitsuka
ANNIE is a 26 ton Gd-loaded water Cherenkov detector installed in the Booster Neutrino Beam at Fermilab. It will measure the neutron multiplicity, as a function of momentum transfer, of neutrino-neutron interactions on water. To achieve this, it is imperative that the neutron capture characteristics in the detector volume are well parameterised. This talk will introduce the Americium Beryllium...
The Scotogenic model is an economical setup that induces Majorana neutrino masses at the 1-loop level and includes a dark matter candidate. We discuss a generalization of the original Scotogenic model with arbitrary numbers of generations of singlet fermion and inert doublet scalar fields. First, the full form of the light neutrino mass matrix is presented, with some comments on its derivation...
If a heavy neutrino is discovered, determining its nature, i.e., whether it is a Dirac or a Majorana fermion, will be at the top of the list of the next questions to ask. A natural way to determine this is to analyze the particle's decays and to observe whether they violate lepton number. However, if the final state includes any light neutrinos, this is impossible. In that event, we may still...
FASER$\nu$ at the LHC is designed to directly detect collider neutrinos for the first time and study their cross sections at high energies, where no such measurements currently exist. The detector will be located in the far-forward region of ATLAS. Deployment on the beam collision axis maximizes the flux of all three neutrino flavors, and allows FASER$\nu$ to measure their interaction...
The focus of the long-baseline neutrino oscillation experiments that are currently being built is the precise measurement of the neutrino oscillation parameters which will require good control of the systematic uncertainties including those of the neutrino interaction models. A novel three-dimensional projection scintillation tracker will be the active target of the ND280 near detector upgrade...
ArgoNeuT was a 0.24 ton Liquid Argon Time Projection Chamber (LArTPC) detector at Fermilab running from 2009 to 2010. It was located along the NuMI neutrino beam and collected six months of data in anti-neutrino beam mode. ArgoNeuT has performed several first neutrino cross-section measurements on argon, however its dataset can also be used to probe physics beyond the Standard Model. One such...
The latest data of the two long-baseline accelerator experiments NOvA and T2K, interpreted in the standard 3-flavor scenario, display a tension. A mismatch in the determination of the standard CP-phase delta_CP extracted by the two experiments is evident in the normal neutrino mass ordering. In this talk, we show that such a discrepancy can be resolved if one hypothesizes the existence of...
MicroBooNE is a liquid argon time projection chamber that operates in the Booster Neutrino Beam at Fermilab. The detector provides high-resolution imaging of neutrino interactions with a low threshold and full angular coverage. Thanks to a high event rate and several years of continuous operation, the MicroBooNE collaboration has obtained the world’s largest dataset of neutrino-argon...
In recent years, the larger size and lower background of dark matter search detectors have opened up a new frontier of searching for new physics other than dark matter search using these detectors. One of them is the search for new properties of neutrinos by observing the interaction of neutrinos at low energy. XMASS is multi-purpose experiment using single phase liquid xenon (LXe) and is...
The data on tau neutrino is very scarce, only a few experiments have detected its interactions. At FNAL beam dump experiment DONUT, tau neutrino interaction cross-section was directly measured with a large systematical (~50%) and statistical (~30%) errors. The main source of systematical error is due to a poor knowledge of the tau neutrino flux. The effective way for tau neutrino production is...
A detailed understanding of neutrino(ν)-nucleus interactions is essential for the precise measurement of neutrino oscillations at long baseline experiments, such as T2K. The T2K near detector complex, designed to constrain the T2K flux and cross section models, also provides a complementary program of neutrino interaction cross-section measurements. Through the use of multiple target materials...
In models where the Standard Model is extended by Majorana fermions, interference effects due to the presence of
CP violating phases have been shown to play a crucial role in lepton number violating processes.
However, important interference effects can also arise in lepton number conserving, but charged lepton flavour violating (cLFV) transitions and decays.
In this work we show that in the...
SND@LHC is a compact and stand-alone experiment to perform measurements with neutrinos produced at the LHC in a hitherto unexplored pseudo-rapidity region of 7.2 < 𝜂 < 8.6, complementary to all the other experiments at the LHC. The experiment is to be located 480 m downstream of IP1 in the unused TI18 tunnel. The detector is composed of a hybrid system based on an 800 kg target mass of...
We examine the time delay distribution of astrophysical neutrinos as a result of Beyond Standard Model interactions with the cosmic neutrino background. We focus on the case of neutrino-neutrino interactions with a scalar mediator, and develop a framework to handle the sharp increase in the cross section at resonance energy. For a 10 MeV mediator mass and neutrino mass of 0.1 eV, we find that...
