The PTOLEMY programme

Wednesday 18 Jun 2025, 14:00 → 16:55 Europe/Rome

Aula B

This topical afternoon is dedicated to illustrating the PTOLEMY experimental project for the measurement of the relic neutrino cross section and the neutrino mass from Tritium decays. We will hear about the underlying theory aspects of condensed matter, about the experiment and the programme. We will also have 2 talks about the local activities at Roma Tre, including the project awarded in CSN5

1 PTOLEMY: physics goals and experiment overview

Speaker: Marcello Messina (Istituto Nazionale di Fisica Nucleare)

2 The theory of PTOLEMY

In presence of a solid state substrate, the spectrum of the β-processes of tritium is qualitatively different from that expected in vacuum. I will review the conceptual and technical aspects of the inclusion of condensed matter effects on such a spectrum. For the case of β-decay, an accurate account of these effects is of utmost importance to successfully constrain the value of the neutrino mass. For the case of neutrino absorption, instead, these effects can raise some conceptual difficulties. I will discuss them and streamline the general direction one needs to follow to try to overcome them.

Speaker: Angelo Esposito (Istituto Nazionale di Fisica Nucleare)

15:25 Coffee break

3 R&D on atomic Tritium source support

Speaker: Alessandro Ruocco (Istituto Nazionale di Fisica Nucleare)

4 GRaphene to Electrons: Energy and Angular resolved Transmission

Speaker: Alice Apponi (Istituto Nazionale di Fisica Nucleare)