Dzhelepov Laboratory of Nuclear Problems

Joint Laboratory Seminar

Date and Time: Wednesday, 10 March 2021, at 11:00 AM

Venue: Online conference in Zoom

Information about the seminar and link to join the event

Seminar topic: “Status and Prospects of the COMET Experiment at the J-PARC Accelerator Complex”

Speaker: Z. Tsamalaidze

Abstract:

The goal of the COMET (COherent Muon to Electron Transition) experiment at the J-PARC accelerator complex is to search for a neutrinoless conversion of a muon to an electron in the field of a nucleus µ + N(A,Z) à e + N(A,Z), a process in which the lepton flavour number is violated in the charged sector of the Standard Model. Since the probability of the µ-e conversion in the Standard Model is zero, the observation of such an event would manifest effects of the so-called New Physics.

The COMET experiment includes two implementation phases. During Phase-I, a detailed study of background processes will be carried out and the sensitivity to events of the µ-e conversion of the order of 10-15 will be achieved. In the future, during Phase-II, it is expected to improve the results and to reach the value of 10-17, thereby exceeding the sensitivity of the already conducted experiments by 4 orders of magnitude. Prior to Phase-I, it is planned to carry out a set of preliminary preparations, which were termed Phase-α.

The seminar will provide a detailed overview of the state of works carried out by the collaboration, the current status of Phase-α and Phase-I of the experiment. Special attention will be drawn to the description of the results of the works, performed so far within the JINR project “COMET Experiment”. Apart from these issues, the detailed plans for the further JINR participation in the experiment, in Phase-I and Phase-α, will be discussed.

The seminar will be held in connection with the proposal for prolongation of the JINR project “COMET Experiment”.