EPJ Web of Conferences (Jan 2023)

X17 search project with EAR2 neutron beam

  • Gervino Gianpiero,
  • Gustavino Carlo,
  • Cisbani Evaristo,
  • Colonna Nicola,
  • Cotto Giorgio,
  • D’Incecco Marco,
  • Fiore Salvatore,
  • Massimi Cristian,
  • Mastinu Pierfrancesco,
  • Mazzone Annamaria,
  • Musacchio-Gonzalez Elizabeth,
  • Petrone Cristina,
  • Viviani Michele

DOI
https://doi.org/10.1051/epjconf/202327913007
Journal volume & issue
Vol. 279
p. 13007

Abstract

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We present the state of the art of the n_TOF Collaboration Working Group activity dedicated to study how to solve the puzzle about the existence of the so called new particle X17, spotted for the first time few years ago by a team at ATOMKI in Hungary and since then never confirmed by other independent experimental collaborations but also never refuted. An “ad hoc” detection setup is under realization for this goal, in order to reach an angular resolution of the two emerging trajectories from the X17 decay and an energy resolution for the invariant mass reconstruction enough to cast light in a definitive way about this puzzle. To design the present detection setup we work in close contact with the Pisa Nuclear Theory team, that has deeply studied the implication of X17 existence and extracted by the ATOMKI results its eventual nature, kinematics and general properties.