Seminario CAPA: “Illuminating the Axion: Seeking the Elusive Decay into Photons" .- Viernes 17 de noviembre
El viernes 17 de noviembre de 2023 a las 11:00 h Elisa Todarello impartirá el seminario de título “Illuminating the Axion: Seeking the Elusive Decay into Photons”. La charla tendrá lugar en el Seminario de Física Nuclear, en el Edificio de A.
Ponente (en inglés):
Elisa Todarello is a postdoc researcher at the University of Torino, Italy, and a member of the Istituto Nazionale di Fisica Nucleare (INFN). She completed her Ph.D. at the University of Florida, with Prof. Pierre Sikivie, and held a postdoc appointment at the Karlsruhe Institute
of Technology, Germany. Elisa is an expert in astroparticle physics and dark matter, particularly on axions. She has worked on various topics in astrophysics and high energy particle physics. She will be a guest of the department of Física Teórica until November 17, 2023 (Fisica Teorica, Office 18, tfno: 84-1253).
Resumen (en inglés):
Axions and axion-like particles couple to photons through a distinctive two-photon vertex. This coupling allows for axion-photon conversion in an external magnetic field, a phenomenon at the base of a variety of current axion searches. Additionally, due to the same vertex, axions can decay into two photons. In this talk, I will show how we can search for axion dark matter by looking for excess radiation resulting from axion decay within a narrow frequency band centered around half the unknown axion mass m. Depending on the value of m, the decay process is dominated by either spontaneous or stimulated decay, requiring corresponding adjustments in the search strategy.
