The electron capture of Te-123 is a unique second-order forbidden process with a Q-value of 51.9 keV. It provides an excellent means to explore the limits of current theoretical models of electron capture at high daughter nucleus angular momentum and low Q-value. The Cryogenic Underground Observatory for Rare Events (CUORE) is a 0 nu beta beta experiment located at the Laboratori Nazionali del Gran Sasso, which consists of 988 natural TeO2 crystals operated using a source-detector method. New analysis techniques have allowed the use of approximately years of data with thresholds down to 3 keV for a total TeO2 exposure of 11.0 kg-yr. Preliminary results from the first study with CUORE data of K-and L-shell electron captures of Te-123 are presented in this work. These peaks are observed with constant signal rates at the L1-and K-shell binding energies of Sb-123.
Astronomy is experiencing a historically exciting period for the study of the Universe as we can observe the whole spectrum of cosmic messengers and explore the Universe with cosmic rays, neutrinos, and gravitational waves. On 17 August 2017, multi-messenger astronomy related to gravitational waves had its breakthrough: the LIGO-Virgo network observed a gravitational wave signal related to the merger of two low-mass neutron stars associated with a gamma-ray burst detected by Fermi-GBM (GW170817, GRB170817A). The observation of such an event telescopes ANTARES and, IceCube and Pierre Auger Observatory have searched for high energy neutrinos above 100 GeV and 100 PeV, respectively, within a time window of +/- 500s around the moment of the gravitational wave detection but no evidence for an excess of coincident neutrino events had been reported. Since then, there is a huge interest in studying gravitational waves events and its counterparts to produce a significantly better understanding of the global picture of compact objects mergers. Here we present the analysis techniques in order to combine the gravitational and neutrino data to perform multi-messenger analysis: searches for neutrinos from KM3NeT in time and space correlation with the gravitational wave sign. Such an approach may lead to a deeper understanding of astrophysical and cosmological processes through combination of information from different probes: a field of science yet to be more explored within the astronomical community as a whole.
The KM3NeT collaboration is building a cubic-kilometer-scale neutrino telescope in the Mediterranean Sea, composed of two detectors of threedimensional arrays of optical sensors encapsulated in transparent watertight glass spheres. KM3NeT/ARCA, off the southern coast of Sicily, Italy, is focused on is designed for the study of the neutrino mass ordering. Even in partial configurations, both detectors have produced significant results, including the detection of the most energetic astrophysical neutrino to date, KM3-230213A, highlighting the potential of deep-sea telescopes to uncover novel astrophysical phenomena. In this paper an overview is presented of the KM3NeT detectors, their layouts, status, and recent results from ARCA and ORCA.
Fundamental neutrino physics experiments at GeV scale struggle with large uncertainties in neutrino interaction cross sections, especially when statistical uncertainty for next generation experiments will no longer be the dominant uncertainty. The nuSCOPE collaboration, born from merger of ENUBET and NuTag collaborations, is trying to tackle this issue by designing a beamline which leverages two novel technologies, those of monitored (ENUBET) and tagged (NuTag) neutrino beams. This beamline enables flux monitoring at the percent level and provides neutrino energy measurement independent of final state particle reconstruction at the detector. nuSCOPE collaboration is exploring the potential implementation of such a beamline at CERN. This poster focuses on the work of the ENUBET collaboration and the monitoring of the charged leptons produced in the decay tunnel with the goal of estimating the neutrino flux. An instrumented decay tunnel prototype of ENUBET design was built and its performance tested multiple times using a charged-particle beam at the CERN PS accelerator.
We report on the constraints placed by the latest Fermilab muon g - 2 measurement on the gauged U(1)(L & micro;-L tau) model. Since the g - 2 measurement discrepancy between Standard Model (SM) prediction and experiment result is lowered down to 1 sigma, the combined bounds from muon neutrino trident scattering and muon g - 2 allow a much broader m(Z ') mass range than the previous m(Z ') < 300 MeV limit. Furthermore, we also explore the updated parameter space and highlight the opportunities for discovering the U(1)(L & micro;-L tau) model at future muon colliders.
