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Neutrino Physics with the PTOLEMY project

Betti, M. G. and Zurek, K. M. (2019) Neutrino Physics with the PTOLEMY project. . (Unpublished) http://resolver.caltech.edu/CaltechAUTHORS:20190612-130918489

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Abstract

The PTOLEMY project aims to develop a scalable design for a Cosmic Neutrino Background (CNB) detector, the first of its kind and the only one conceived that can look directly at the image of the Universe encoded in neutrino background produced in the first second after the Big Bang. The scope of the work for the next three years is to complete the conceptual design of this detector and to validate with direct measurements that the non-neutrino backgrounds are below the expected signal from the Big Bang. In this paper we discuss in details the theoretical aspects of the experiment and its physics goals. In particular, we mainly address three issues. First we discuss the sensitivity of PTOLEMY to the standard neutrino mass scale. We then study the perspectives of the experiment to detect the CNB via neutrino capture on tritium as a function of the neutrino mass scale and the energy resolution of the apparatus. Finally, we consider an extra sterile neutrino with mass in the eV range, coupled to the active states via oscillations, which has been advocated in view of neutrino oscillation anomalies. This extra state would contribute to the tritium decay spectrum, and its properties, mass and mixing angle, could be studied by analyzing the features in the beta decay electron spectrum.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
https://arxiv.org/abs/1902.05508arXivDiscussion Paper
Record Number:CaltechAUTHORS:20190612-130918489
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190612-130918489
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96327
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 Jun 2019 20:55
Last Modified:12 Jun 2019 20:55

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