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Status: Being concluded

Strangeness in Hadronic Matter and Study of Inelastic Reactions
Near Kinematical Borders

Leaders:     E.A. Strokovsky
E.S. Kokoulina
D.O. Krivenkov

Participating countries and international organizations:
Belarus, Czech Republic, Japan, Russia, Ukraine.

Issues addressed and main goals of research:
Strangeness in hadronic matter and study of boundary effects:
study of stabilizing effects of strangeness in nuclear matter and properties of the lightest hypernuclei;
study of multi-particle dynamics in inelastic proton-proton and proton-nucleus interactions with extremally high multiplicity;
study of spectra and yields of soft photons in deuteron-nucleus and nucleus-nucleus interactions.

Expected results:
  • Experimental conclusion about existence of the hypernucleus 6H .

  • New experimental data on properties of the lightest hypernuclei and experimental verification of corresponding theoretical models for such hypernuclei.

  • New experimental data about the drip-line location for loosely bound light hypernuclei with high neutron excess, necessary for development of the theory of the neutron-rich hypernuclei and models of their production in non-central nucleus-nucleus interactions.

  • Comparison of the energy spectra (in the region of several MeV) of protons, emitted in interactions with nuclear targets of various (from deuterons to heavy nuclei) nuclear beams from the Nuclotron and measured at different multiplicity of charged and neutral particles as well as at different emission angles of such photons, with theoretical predictions. Verification of various physical hypotheses about emission of the "direct" soft photons in proton and nuclei-nuclei interactions.

  • Experimental estimation (or determination of upper limit) of cross sections for production of new hypothetical resonances, decaying via 2gamma mode. Determination of conditions for pion condensate formation at the high multiplicity region by momentum spectra.
Expected results in the current year:
  • Upgrade of the tracking system of the HyperNIS magnetic spectrometer by installing additional planes of GEM detectors.

  • Analysis of data from LEPS spectormeter on vector-meson photoproduction by polarized photons.

  • Monte-Carlo simulation of performance of the prototype of electromagnetic calorimeter (from the BGO-crystal). Production of the necessary FE-electronics with low gamma-detection threshold (~ 5-8 MeV) for this calorimeter.

  • Study and optimisation of scintillation light collection, computer simulation of electromagnetic shower profile in the detector cell on the base of W+Cu composite activated by cerium of gallium-gadolinium-garnet (GaGGiCe) for registration of soft photons.

  • Preparation of the experiment NEMAN project aimed on study of photon emission in non-central collisions of relativistic (with kinetic energies above 1 GeV/nucleon) light nuclei (at the SVD-2 se-tup).

  • R&D of silicon pixel detector for coordinate measurements.
List of projects:
  Project Leader Priority
(period of realisation)
1. HyperNIS E.A. Strokovsky 1   (2010-2021)

List of Activities
  Activity or Experiment Leaders
      Laboratory or other
    Division of JINR
Responsible person
Main researchers
1. Experiment NIS-GIBS E.A. Strokovsky
J. Lukstins
D.O. Krivenkov
Data taking
  VBLHEP V.D. Aksinenko, A.V. Averyanov, A.N. Bayeva, S.N. Bazylev, A.E. Baskakov, D.V. Dementiev, V.B. Dunin, A.A. Feschenko, A.A. Fedyunin, S.V. Gertsenberger, A.M. Korotkova, A.V. Konstantinov, V.T. Matyushin, A.I. Maksimchuk, Yu.A. Murin, O.V. Okhrimenko, S.N. Plyashkevich, N.G. Parfenova, P.A. Rukoyatkin, A.V. Shipunov, M.O. Shitenkov, R.A. Salmin, A.D. Sheremetiev, A.V. Shutov, N.A. Shutova, V.M. Slepnev, A.L. Voronin
  DLNP N.V. Atanov, B.A. Popov, V.V. Tereschenko, S.V. Tereschenko
  OCE A.N. Parfenov
2. Experiment NEMAN E.S. Kokoulina
V.A. Nikitin
Project preparation
Data taking
  VBLHEP V.P. Balandin, N. Barlykov, Yu.T. Borzunov, V.B. Dunin, V. Dudin, O.P. Gavrischuk, A.S. Gribovsky, V.I. Kireev, A.V. Konstantinov, D.A. Kirillov, V.A. Nikitin, V.A. Pavlyukevich, Yu.P. Petukhov, V.V. Popov, M.V. Tokarev, A.S. Savchenko, S.Yu. Sinelcshikova, R.A. Shindin, V.A. Zykunov
  BLTP Yu.A. Bystritsky

Country or International
City Institute or Laboratory
Belarus Minsk BSUIR
Gomel GSTU
Czech Republic Prague CTU
Japan Osaka RCNP
Russia Moscow "Azimuth-
Protvino IHEP
St. Petersburg SPbSPU
Moscow, Zelenograd RIMST
Chernogolovka ISSP RAS
Syktyvkar DM Komi SC
Slovakia Banska Bistrica UMB
Ukraine Kiev BITP NASU

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