02-0-1085-2009/2019
 
Priority: 1
   
Status: In-progress
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. 
Scientific Programme:
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 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 main results in 2018:

  • Results on azimuthal asymmetries with a longitudinally polarized deuterium target. 

  • Preliminary results on the polarization of the pion from the 2012 data. 

  • Participation in the data taking. 

  • Support of the hadron calorimeter HCAL1 and the muon system MW1 during data taking. 

  • 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
Data taking
Data analysis
1. Hadron calorimeter I.A. Savin
O.P. Gavrishchuk
Maintenance
  VBLHEP G.V. Meshcheryakov, A.S. Yukaev, V.A. Anosov
  DLNP A.S. Selyunin
2. Electromagnetic calorimeter A.P. Nagaytsev,
N.V. Anfimov
Maintenance
  VBLHEP V.V. Astakhov, O.P. Gavrishchuk, G.V. Meshcheryakov, V.A. Anosov, A.P. Nagaytsev
  DLNP A.I. Antoshkin, V.M. Kudryavtsev, M.V. Nikitin, I.E. Tchirikov-Zorin, T.V. Rezinko, A.V. Rybnikov, D.V. Fedossev, A.S. Selyunin, A.G. Olshevskiy, O.V. Gromov
3. Muon system G.D. Alekseev
Maintenance
  DLNP V.M. Abazov, L.S. Vertogradov, N.I. Zhuravlev, A.A. Piskun, A.G. Samartsev, V.V. Tokmenin, G.A. Golovanov
4. Polarized target Yu.F. Kiselev
Maintenance
  VBLHEP Yu.F. Kiselev
5. System of the data taking V.N. Frolov
Maintenance
  DLNP V.N. Frolov
6. Software devlopment.
Data analysis
E.V. Zemlyanichkina
A.V. Guskov
Realization
  VBLHEP I.A. Savin, D.V. Peshekhonov, G.I. Smirnov, G.V. Meshcheryakov, N.O. Mitrofanov, A.P. Nagaytsev, O.M. Kuznetsov, Yu.I. Ivanshin, N.S. Rogacheva, R.R. Akhunzyanov, R. Gushcherski, A.V. Ivanov, V.S. Batozskaya, E.A. Salmina
  DLNP A.G. Olshevskiy, N.V. Anfimov, E.O. Mitrofanov, A.F. Gridin, T.V. Rezinko, A.V. Rybnikov, A.S. Selyunin, A.I. Antoshkin, I.A. Denisenko, A.V. Maltsev, A.A. Rymbekova
  LIT P.V. Zrelov, A.Sh. Petrosyan
7. Measurements of generalized
parton distributions
A.P. Nagaytsev
A.V. Guskov
I.A. Savin
Realization
  VBLHEP G.V Meshcheryakov, O.M. Kuznetsov, R.R. Akhuzyanov, N.S. Rogacheva, E.V. Zemlyanichkina, V.S. Batozskaya, R. Guscherski, V.D. Peshekhonov, E.A. Salmina, G.I. Smirnov, O.V. Teryaev
  DLNP A.G. Olshevskiy, I.A. Denisenko, A.V. Maltsev, A.A. Rymbekova
  BLTP A.V. Efremov
8. Studies of Drell-Yan processes A.V. Guskov
Realization
  DLNP A.V. Guskov, I.A. Denisenko, A.V. Maltsev, A.A. Rymbekova, A.O. Gridin, E.O. Mitrofanov
9. Spin effects in hadron interactions at 0.3-3 GeV A.V. Kulikov
D.A Tsirkov
Data processing
10. Studies of semi-inclusive
reactions
I.A. Savin
E.V. Zemlyanichkina
Realization
  VBLHEP N.O. Mitrofanov, Yu.I. Ivanshin, N.S. Rogacheva, E.A. Salmina
II. Theoretical studies A.V. Efremov
Realization
  BLTP S.B. Gerasimov, O.V. Teryaev, A.V. Kotikov, A.E. Dorokhov, N.I. Kochelev, 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 Calcutta 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