Conveners
Neutrinos: Experiments
- Mario A Acero (Universidad del Atlantico)
- David Vanegas Forero (Universidad de Medellín)
Neutrinos: Theory
- Oscar Alberto ZAPATA NOREÑA
- David Vanegas Forero (Universidad de Medellín)
The Deep Underground Neutrino Experiment (DUNE) is one of the next generation of neutrino experiments in construction in the USA under an international scheme. Colombian institutions are involved in the development of the DUNE experiment as an example of how Latin American countries can help design one mega-science experiment. This talk summarizes the Colombian activities in the design of the...
The photon detection system has been of great importance at DUNE (Deep Underground Neutrino Experiment). It can improve the sensitivity of the instrument by adding photon traces of the events, it's possible to increase data on CC interactions, and get information of the less common NC scattering on Ar. Supernova events are the high-level constraint DUNE must achieve in terms of bandwidth...
The Precision Reactor Oscillation and Spectrum Experiment (PROSPECT) is an above-ground antineutrino experiment at short baselines located at the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). This experiment's physics goals include searching for the existence of sterile neutrinos and precisely measuring the antineutrino energy spectrum. At PROSPECT, antineutrinos...
The KM3NeT Neutrino Observatory is being built in two abyssal sites in the Mediterranean Sea: ARCA (IT), optimized for astrophysical neutrinos, and ORCA (FR), optimized for atmospheric neutrinos studies. The KM3NeT observatory will host the largest water Cherenkov detectors ever built in the northern hemisphere, providing real-time and high-bandwidth connection to shore, also available for...
We investigate the observational constraints on the cosmic neutrino background (CNB) given by the extended $\Lambda$CDM scenario ($\Lambda$CDM $+ N_{\rm eff} + \sum m_{\nu} + c^2_{\rm eff} + c^2_{\rm vis} + \xi_{\nu}$) using the latest observational data from Planck CMB (temperature power spectrum, low-polarisation and lensing reconstruction), baryon acoustic oscillations (BAOs), the new...
We studied a neutrino decay scenario as a potential solution to conciliate the tension between appearance and disappearance data at the short-baseline experiments. Particularly, we considered a heavy neutrino mass-eigenstate that decays into a usual light neutrino plus a massless scalar. Under this neutrino decay hypothesis, we fitted LSND and MiniBooNE electron neutrino appearance data...
In this work, we studied the modifications of the neutrino oscillation proba-
bilities due to possible non-standard interactions (NSI) with matter (taking into
account a constant matter density profile), focused on the channels ν μ → ν μ and
ν μ → ν e . First, the neutrino oscillation probability in matter without NSI was
studied and then we proceeded with NSI. The most relevant NSI...
In this work, we propose new five texture zeros for the mass matrices in the
lepton sector in order to predict neutrino masses. In our approach, we extend
beyond the standard model (SM) by assuming Dirac masses for the neutrinos,
a feature which allows us to make a theoretical prediction for the lightest neutrino mass in the normal ordering. The textures that were analyzed have enough
free...
The lifetime of a particle is usually considered as one of its inherent features. On one hand, the lifetime of non-elementary quantum objects like pions or muons can be calculated from the knowledge of the interaction which rules their decay. On the other hand, other particles such as the electron are regarded as stable, in the sense that they do not decay at all (at least within Standard...
We propose an $SU(5) \times \mathcal{T}_{13}$ model for both quarks and leptons. With tribimaximal (TBM) mixing for the seesaw matrix, symmetric Yukawa textures for down-quarks and charged leptons fail to explain the experimentally observed reactor angle. We derive the minimal asymmetric texture that not only reproduces the three lepton mixing angles assuming TBM mixing with a single phase,...
We all know that in the dense anisotropic interior of the star, neutrino- neutrino forward-scattering can lead to fast collective neutrino oscillations, which has striking consequences on flavor dependent neutrino emission and can be crucial for the evolution of a supernova and its neutrino signal. Although the triggering and initial growth of fast oscillations are understood, owing to its...
