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 $\rho$-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 results in the current year:
- 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) |
| 1. | COMPASS-II | A.P. Nagajtsev |
1 (2011-2020) |
| List of Activities | | | Activity or Experiment | Leaders | Status |
| | Laboratory or other
Division of JINR
Responsible person | Main researchers
|
| I. | Experiment COMPASS | A.P. Nagaytsev |
|
| 1. | Hadron calorimeter | O.P. Gavrishchuk |
|
| |
VBLHEP
| V.A. Anosov, G.V. Meshcheryakov
|
| |
DLNP
| A.S. Selyunin, A.V. Rybnikov
|
| 2. | Electromagnetic calorimeter | A.P. Nagaytsev,
N.V. Anfimov |
|
| |
VBLHEP
| V.A. Anosov, O.P. Gavrishchuk, G.V. Meshcheryakov, A.P. Nagaytsev
|
| |
DLNP
| A.I. Antoshkin, V.M. Kudryavtsev, A.G. Olshevskiy, A.V. Rybnikov, A.S. Selyunin,
I.E. Tchirikov-Zorin
|
| 3. | Muon system | G.D. Alekseev |
|
| |
DLNP
| V.M. Abazov, G.A. Golovanov, A.A. Piskun, A.G. Samart-
sev, V.V. Tokmenin, L.S. Vertogradov, N.I. Zhuravlev
|
| 4. | Polarized target | Yu.F. Kiselev |
|
| |
VBLHEP
| Yu.F. Kiselev
|
| 5. | System of the data taking | V.N. Frolov |
|
| |
DLNP
| V.N. Frolov
|
| 6. | Software development.
Data analysis | E.V. Zemlyanichkina
A.V. Guskov |
|
| |
VBLHEP
| R.R. Akhunzyanov, R. Gushcherski, A.V. Ivanov, Yu.I. Ivanshin, O.M. Kuznetsov,
G.V. Meshcheryakov, 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
|
| 7. | Measurements of generalized
parton distributions | A.P. Nagaytsev
A.V. Guskov
I.A. Savin |
|
| |
VBLHEP
| R.R. Akhunzyanov, R. Guscherski, G.V Meshcheryakov, 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
|
| 8. | Studies of Drell-Yan processes | A.V. Guskov |
|
| |
DLNP
| I.A. Denisenko, A.V. Guskov, A.O. Gridin, A.V. Maltsev, E.O. Mitrofanov, A.A. Rymbekova
|
| 9. | Spin effects in hadron
interactions at 0.3-3.0 GeV | A.V. Kulikov
D.A Tsirkov |
|
| |
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
|
| 10. | Studies of semi-inclusive
reactions | I.A. Savin
E.V. Zemlyanichkina |
|
| |
VBLHEP
| A.V. Ivanov, Yu.I. Ivanshin, S.R. Gevorgyan, N.S. Rogacheva, E.A. Salmina
|
| II. | Theoretical studies | A.V. Efremov |
|
| |
BLTP
| A.E. Dorokhov, S.B. Gerasimov, O.V. Teryaev, A.V. Kotikov, A.M. Sidorov
|
| Collaboration |
Country or International
Organization | City | Institute or Laboratory |
| Belarus
| Minsk
| SPMRC NASB
|
|
| CERN
| Geneva
| CERN
|
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| Czech Republic
| Prague
| CU
|
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| Brno
| BUT
|
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| Liberec
| TUL
|
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| France
| Saclay
| SPhN CEA DAPNIA
|
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| Germany
| Bochum
| RUB
|
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| Bonn
| UniBonn
|
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| Freiberg
| TUBAF
|
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| Julich
| FZJ
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| Munich
| TUM
|
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| Mainz
| JGU
|
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| Israel
| Tel Aviv
| TAU
|
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| Italy
| Trieste
| INFN
|
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| Turin
| INFN
|
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| India
| Kolkata
| MIERE
|
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| Japan
| Yamagata
| Yamagata Univ.
|
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| Poland
| Warsaw
| WUT
|
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| Otwock (Swierk)
| NCBJ
|
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| Portugal
| Aveiro
| UA
|
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| Lisbon
| LIP
|
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| Russia
| Moscow
| LPI RAS
|
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| Tomsk
| TPU
|
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| Protvino
| IHEP
|
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| Taiwan
| Taipei
| AS
|
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| USA
| Urbana, IL
| I
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