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Status: New

Experiment COMET at J-PARC

Leader:     Z. Tsamalaidze

Participating Countries and International Organizations:
Belarus, Czech Republic, Georgia, Germany, United Kingdom, France, Russia, Japan.
Scientific Programme:
Te goal of the COMET experiment at the accelerator of J-PARC is the search for a neutrinoless conversion of a muon into an electron µ - N e - N, in which the lepton number in the charged sector does not conserve. Within the SM, modified taking into account the neutrino oscillations, the expected rate is less than 10 -50 and so any observation of conversion would be a clear signal of a new physics beyond the SM. A measurement at the level 10 -17 for conversion, which is the COMET goal, is a factor of 10000 better than that of the current experimental limit B(µ -+ Au e - + Au) < 7·10 -13 from SINDRUM-II at PSI.

Expected main results in 2018:
  • R&D on thin-wall straw-tubes for experiment COMET. Development, production and tests of the straw detector and electromagnetic calorimeter prototypes with a beam.

  • Calibration of LYSO crystals.

List of projects:
  Project Leader Priority
(period of realisation)
1. COMET Z. Tsamalaidze 1   (2017-2019)
List of Activities
  Activity or Experiment Leaders
  Laboratory or other
Division of JINR
Responsible person
Main researchers
1. Project COMET Z. Tsamalaidze
  DLNP V.N. Duginov, P.G. Evtukhovich, I.L. Evtukhovich, K.I. Gritsai, Kh. Khubashvili, V.G. Kalinnikov, E.S. Kaneva, A.S. Moiseenko, B.M. Sabirov, A.G. Samartsev, N. Tsverava,E.P. Velicheva, A.D. Volkov
  LIT G. Adamov, A. Khvedelidze
  BLTP G.A. Kozlov
  VBLHEP V.V. Elsha, T.L. Enik, S.A. Movchan, S.N. Shkarovsky

Country or International
City Institute or Laboratory
Belarus Minsk IP NASB
Czech Republic Prague CU
France Strasbourg CRN
Georgia Tbilisi HEPI-TSU
Germany Dresden TU Dresden
Japan Osaka Osaka Univ.
Tsukuba KEK
Fukuoka Kyushu Univ.
Russia Moscow ITEP
Novosibirsk BINP SB RAS
United Kingdom London Imperial College

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