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Studies of the Nucleon and Hadron Structure at CERN
| 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 the Drell-Yan processes.
- Spin effects in hadron interactions at 0.3-3.0 GeV.
- Study of the mechanisms of exclusive production of photons, pions and
-mesons in DIS and DVCS processes. - Measurement of the polarizability of the pion.
- 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.
Expected major results in the current year:
- Results on azimuthal asymmetries with a longitudinally polarized deuterium target.
- Preliminary results on the polarization of the pion from the 2012 data.
- Results on kaon multiplicities.
- Observation of the exclusive production of the X(3872) in the reactions muons with nuclear targets.
- Software development and modeling of vaious reactions studied on the COMPASS-II spectrometer. Ana-lysis 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 (2011-2020) |
| List of Activities | |||||
| Activity or Experiment | Leaders | ||||
| Laboratory or other Division of JINR Responsible person |
Main researchers | ||||
| I. | Experiment COMPASS | A.P. Nagaytsev |
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| 1. | Hadron calorimeter | I.A. Savin O.P. Gavrishchuk |
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| VBLHEP | V.A. Anosov, G.V. Meshcheryakov, A.S. Yukaev | ||||
| DLNP | A.S. Selyunin | ||||
| 2. | Electromagnetic calorimeter | A.P. Nagaytsev, N.V. Anfimov |
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| VBLHEP | V.A. Anosov, V.I. Astakhov, O.P. Gavrishchuk, G.V. Meshcheryakov, A.P. Nagaytsev | ||||
| DLNP | A.I. Antoshkin, V.O. Gromov, D.V. Fedossev, V.M. Kudryavtsev, M.V. Nikitin, A.G. Olshevskiy, T.V. Rezinko, A.V. Rybnikov, A.S. Selyunin, I.E. Tchirikov-Zorin | ||||
| 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. | Polarized target | Yu.F. Kiselev |
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| VBLHEP | Yu.F. Kiselev | ||||
| 5. | System of the data taking | V.N. Frolov |
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| DLNP | V.N. Frolov | ||||
| 6. | 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, V.S. Batozskaya, O.M. Kuznetsov, G.V. Meshcheryakov, A.P. Nagaytsev, N.S. Rogacheva, D.V. Peshekhonov, I.A. Savin, G.I. Smirnov, E.A. Salmina |
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| DLNP | N.V. Anfimov, A.I. Antoshkin, A.F. Gridin, I.A. Denisenko, A.V. Maltsev, A.G. Olshevskiy, T.V. Rezinko, A.V. Rybnikov, A.A. Rymbekova, A.S. Selyunin | ||||
| LIT | P.V. Zrelov, A.Sh. Petrosyan | ||||
| 7. | Measurements of generalized parton distributions |
A.P. Nagaytsev A.V. Guskov I.A. Savin |
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| VBLHEP | R.R. Akhuzyanov, V.S. Batozskaya, R. Guscherski, G.V Meshcheryakov, O.M. Kuznetsov, N.S. Rogacheva, V.D. Peshekhonov, E.A. Salmina, G.I. Smirnov, O.V. Teryaev, E.V. Zemlyanichkina | ||||
| DLNP | I.A. Denisenko, A.V. Maltsev, A.G. Olshevskiy, A.A. Rymbekova | ||||
| BLTP | A.V. Efremov | ||||
| 8. | Studies of Drell-Yan processes | A.V. Guskov |
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| DLNP | A.V. Guskov, A.O. Gridin, I.A. Denisenko, A.V. Maltsev, A.A. Rymbekova, E.O. Mitrofanov | ||||
| 9. | Spin effects in hadron interac- tions at 0.3-3.0 GeV |
A.V. Kulikov D.A Tsirkov |
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| DLNP | T.I. Azaryan, S.N. Dymov, B.Zh. Zalikhanov, V.I. Komarov, V.S. Kurbatov, Zh. Kurmanaliev, A. Kunsafina, Yu.N. Uzikov, V.V. Shmakov | ||||
| 10. | Studies of semi-inclusive reactions |
I.A. Savin E.V. Zemlyanichkina |
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| VBLHEP | Yu.I. Ivanshin, N.O. Mitrofanov, N.S. Rogacheva, E.A. Salmina | ||||
| II. | Theoretical studies | A.V. Efremov |
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| BLTP | S.B. Gerasimov, A.E. Dorokhov, O.V. Teryaev, A.V. Kotikov, A.M. Sidorov | ||||
| Collaboration | |||
| Country or International Organization |
City | Institute or Laboratory | |
| CERN | Geneva | CERN | |
| Czech Republic | Prague | CU | |
| Brno | BUT | ||
| Liberec | TUL | ||
| France | Saclay | SPhN CEA DAPNIA | |
| Germany | Bielefeld | Univ. | |
| Bochum | RUB | ||
| Bonn | UniBonn | ||
| Freiburg | TUBA | ||
| Hamburg | DESY | ||
| Julich | FZJ | ||
| Munich | TUM | ||
| Mainz | JGU | ||
| Israel | Tel Aviv | TAU | |
| Italy | Turin | INFN | |
| Trieste | INFN | ||
| India | Kolkata | MIERE | |
| Japan | Yamagata | Yamagata Univ. | |
| Poland | Warsaw | WUT | |
| Otwock-Swierk | NCBJ | ||
| Portugal | Aveiro | UA | |
| Lisbon | LIP | ||
| Russia | Moscow | LPI RAS | |
| Tomsk | TPU | ||
| Protvino | IHEP | ||
| Taiwan | Taipei | AS | |
| USA | Urbana, IL | I |
