Experiment COMET at J-PARC
Participating countries and international organizations: Belarus, Czech Republic, Georgia, Germany, France, Kazakhstan, Russia, United Kingdom, Japan.
Issues addressed and main goals of research: The goal of the COMET experiment at the J-PARC accelerator is the search for the neutrinoless muon-electron
conversion µ - N e - N,
in which the lepton number in the charged sector does not conserve. Within the SM
modified with allowance for the neutrino oscillations, the expected rate is less than 10 -50, and therefore any observation of
the conversion would be a clear signal of new physics beyond the SM. Conversion measurement at the level of 10 -17, which is the COMET goal,
is a factor of 10000 better than the current experimental limit B(µ -+ Auµ e - + Au) < 7·10 -13 from SINDRUM-II at PSI.
Expected results in the current year:
- R&D of thin-wall straw tubes for COMET. Development, production and tests of the straw detector and electromagnetic calorimeter prototype.
- Calibration of LYSO crystals.
List of Activities | | Activity or Experiment | Leaders | Status |
| Laboratory or other Division of JINR Responsible person | Main researchers
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1. | Experiment COMET | Z. Tsamalaidze |
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DLNP
| K. Abylay, V.N. Duginov, P.G. Evtukhovich, I.L. Evtukhovich, K.I. Gritsai, V.A. Kalinnikov, Kh. Khubashvili, E.S. Kaneva, M.D. Kravchenko,
A.S. Moiseenko, A.V. Pavlov,
B.M. Sabirov, A.G. Samartsev, N. Tsverava, E.P. Velicheva, A.D. Volkov
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LIT
| G. Adamov, D. Goderidze, Yu.L. Kalinovsky, A. Khvedelidze
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BLTP
| D. Aznabaev, A. Issadykov, G.A. Kozlov
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VBLHEP
| D. Baigarashev, V.V. Elsha, T.L. Enik, S.A. Movchan, S.N. Shkarovsky
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Collaboration |
Country or International Organization | City | Institute or Laboratory |
Belarus
| Minsk
| BSU
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| IP NASB
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Czech Republic
| Prague
| CU
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France
| Paris
| IN2P3
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Georgia
| Tbilisi
| GTU
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| HEPI-TSU
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| TSU
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| UG
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Germany
| Dresden
| TU Dresden
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Japan
| Fukuoka
| Kyushu Univ.
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| Osaka
| Osaka Univ.
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| Tsukuba
| KEK
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Kazakhstan
| Almaty
| INP
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Russia
| Moscow
| ITEP
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| NNRU "MEPhI"
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| Novosibirsk
| BINP SB RAS
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| NSU
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United Kingdom
| London
| Imperial College
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| Didcot
| RAL
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