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| Leader: | A.P. Nagaytsev |
| Deputy: | A.V. Guskov |
Participating countries and international organizations:
CERN, Czech Republic, France, Germany, India, Israel, Italy, Japan, Poland, Portugal, Russia, Taiwan, USA.
Issues addressed and main goals of research:
Studies of the generalized parton distributions in various exclusive processes. Study of the mechanisms of exclusive production of photons, pions and vector mesons in the processes of deep inelastic scattering of muons on nuclei (DIS) and in processes of deep inelastic virtual Compton scattering (DVCS). Measurements of the polarizability of a pion. Study of the structure of nucleons in Drell-Yan processes. Study of inclusive and semi-inclusive processes in DIS reactions of muons and hadrons on polarized targets.
- Measurements of the structure functions of a nucleon, polarized parton distributions of nucleons.
- Measurements of the structure of nucleons in vuon pair production (Drell-Yan, J/Psi).
- Spin effects in hadron interactions at 0.3-3.0~GeV.
- Study of the mechanisms of exclusive production of photons, pions and \(\rho\)-mesons in DIS and DVCS processes.
- Measurement of the Primakoff reactions cross sections.
- Creation and development of a set of programs for modeling and data processing. System support for CERN software.
- Preparation of detectors for the COMPASS-II spectrometer.
- Measurement of
0 production in the processes of exclusive deep inelastic scattering of muons on a hydrogen target. - Measurements of Collins and Sivers asymmetry on hydrogen and deuterium targets.
- Measurement of semi-inclusive scattering on hydrogen and deuterium targets with 2 gadrons production.
- Measurement of transverse spin asymmetries in semi-exclusive scattering processes.
- Software development and modeling of vaious reactions studied on the COMPASS-II spectrometer. Analysis of data in JINR and preparation of publications.
- Theoretical studies on the program COMPASS-I and COMPASS-II.
| List of projects: | |||
| Project | Leader | Priority (period of realisation) |
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| 1. | COMPASS-II | A.P. Nagajtsev | 1 (2011-2022) |
| List of Activities | |||||
| Activity or Experiment | Leaders | ||||
| Laboratory or other Division of JINR Responsible person |
Main researchers | ||||
| I. | Experiment COMPASS-II | A.P. Nagaytsev |
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| 1. | Hadron calorimeter | O.P. Gavrishchuk |
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| VBLHEP | V.A. Anosov |
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| DLNP | A.S. Selyunin, A.V. Rybnikov | ||||
| 2. | Electromagnetic calorimeter | A.P. Nagaytsev, N.V. Anfimov |
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| VBLHEP | V.A. Anosov, O.P. Gavrishchuk, |
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| DLNP | A.I. Antoshkin, A.V.Guskov, V.M. Kudryavtsev, A.G. Olshevskiy, A.V. Rybnikov, A.S. Selyunin, I.E. Tchirikov-Zorin, V.N.Frolov |
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| 3. | Muon system | G.D. Alekseev |
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| DLNP | V.M. Abazov, G.A. Golovanov, A.A. Piskun, A.G. Samartsev, V.V. Tokmenin, L.S. Vertogradov, N.I. Zhuravlev | ||||
| 4. | System of the data taking | V.N. Frolov |
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| DLNP | V.N. Frolov | ||||
| 5. | Software devlopment. Data analysis |
E.V. Zemlyanichkina A.V. Guskov |
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| VBLHEP | R.R. Akhunzyanov, R. Gushcherski, A.V. Ivanov, Yu.I. Ivanshin, O.M. Kuznetsov, A.P. Nagaytsev, N.S. Rogacheva, D.V. Peshekhonov, I.A. Savin, E.A. Salmina | ||||
| DLNP | N.V. Anfimov, A.I. Antoshkin, A.F. Gridin, I.A. Denisenko, A.V. Maltsev, A.G. Olshevskiy, A.V. Rybnikov, A.A. Rymbekova, A.S. Selyunin | ||||
| LIT | P.V. Zrelov, A.Sh. Petrosyan | ||||
| 6. | Measurements of generalized parton distributions |
A.P. Nagaytsev A.V. Guskov I.A. Savin |
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| VBLHEP | R.R. Akhunzyanov, R. Guscherski, G.V, O.M. Kuznetsov, N.S. Rogacheva, V.D. Peshekhonov, E.A. Salmina, O.V. Teryaev, E.V. Zemlyanichkina | ||||
| DLNP | I.A. Denisenko, A.V. Maltsev, A.G. Olshevskiy, A.A. Rymbekova | ||||
| BLTP | A.V. Efremov | ||||
| 7. | Studies of Drell-Yan processes | A.V. Guskov |
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| DLNP | I.A. Denisenko, A.O. Gridin, A.V. Maltsev, E.O. Mitrofanov, A.A. Rymbekova | ||||
| 8. | Spin effects in hadron interactions at 0.3-3.0 GeV |
A.V. Kulikov D.A Tsirkov |
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| DLNP | T.I. Azaryan, S.N. Dymov, V.I. Komarov, V.S. Kurbatov, Zh. Kurmanaliev, A. Kunsafina, V.V. Shmakov, Yu.N. Uzikov, B.Zh. Zalikhanov | ||||
| 9. | Studies of semi-inclusive reactions |
I.A. Savin E.V. Zemlyanichkina |
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| VBLHEP | A.V.Ivanov, Yu.I. Ivanshin, S.R.Gevorgyan, N.S. Rogacheva, E.A. Salmina | ||||
| II. | Theoretical studies | A.V. Efremov |
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| BLTP | A.E. Dorokhov, S.B. Gerasimov, O.V. Teryaev, A.V. Kotikov, A.M. Sidorov | ||||
Collaboration
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Country or International Organization |
City | Institute or laboratory |
| CERN | Geneva | CERN |
| Czech Republic | Brno | BUT |
| Liberec | TUL | |
| Prague | CU | |
| France | Saclay | SPhN CEA DAPNIA |
| Germany | Bochum | RUB |
| Bonn | UniBonn | |
| Freiberg | TUBAF | |
| Julich | FZJ | |
| Mainz | JGU | |
| Munich | TUM | |
| India | Kolkata | MIERE |
| Israel | Tel Aviv | TAU |
| Italy | Trieste | INFN |
| Turin | INFN | |
| Japan | Yamagata | Yamagata Univ. |
| Poland | Otwock (Swierk) | NCBJ |
| Warsaw | WUT | |
| Portugal | Aveiro | UA |
| Lisbon | LIP | |
| Russia | Moscow | LPI RAS |
| Protvino | IHEP | |
| Tomsk | TPU | |
| Taiwan | Taipei | AS |
| USA | Urbana, IL | I |
