Skobeltsyn INP MSU
Strong Interactions Laboratory

The Strong Interactions Laboratory (originally - Hadronic Interactions Laboratory) has been created in 1967, as a separate structure supervised directly by S.N.Vernov, Director of Nuclear Physics Institute of Moscow State University, and originally named "Mountain-top Research Group". L.I.Sarycheva, professor of the Chair of Cosmic Ray Physics at the MSU Physics Department, was assigned to head this group. After the Experimental High Energy Physics Division was formed in 1978, led by professor P.F.Ermolov, the Mountain-top Research Group joined this division and was renamed to "Hadronic Interactions Laboratory". The Laboratory was renamed to "Strong Interactions Laboratory" in 2015. The main field of research of the Laboratory is the study of hadron production mechanisms in strong interaction processes.

1.1965-1972-Difference in interaction characteristics for pion and nucleon collisions with atomic nuclei (experiment "PION" at mt.Aragatz station)

1) Analysis of fluctuations of hadronic cascades in the ionization calorimeter.
2) Measurements of secondary (leading) particle spectra.
3) Identification of cosmic ray particles from the logarithmic ionization increase in a multilayer proportional counter.
4) Observation of T-effect.
5) Search for free quarks in cosmic radiation.

2. 1971-1985-Comparative studying pion and nucleon interactions in cosmic rays and at accelerators

1) The asymmetry of pion-nucleon interactions due to internal structure of hadrons.
2) The inelastic charge exchange (pi-) --> (pi0) and related effects in the cosmic rays (leading pi0).
3) The cluster mechanism of particles production.
4) Study of virtual particle interactions.

3.1978-1990-Study of multi-particle production mechanisms in proton-proton and antiproton-proton interactions in liquid-hydrogen bubble chamber "Mirabel"

1) Exclusive channels in proton-antiproton collisions at 32 GeV/c.
2) Measurements of cross sections for strange particle production.
3) Characteristics of diffractive clusters.
4) Mechanisms of annihilation processes in exclusive and inclusive channels (the comparative analysis of proton-proton and antiproton-proton collisions).
5) Measurements of cross sections for resonance production.
6) Development of Quark-Gluon String model and its application to the analysis of experimental data.

4.1981-1990-Study of the space-time structure of hadronic processes - experiment "Leading particles" SMS-MSU (U-10, Dubna)

1) Evolution of a hadron on the sub-nuclear scale of times and distances.
2) The channeling of relativistic nuclei (C,O,Mg) in a bent silicon monocrystal.

5. from1988-Study of spin effects in polarized protons beams - experiments
"Leading particles" SMS-MSU (U-10, Dubna), "NEPTUN" (UNK, Protvino)

1) The carbon analyzing ability for polarized proton at energies below 3.5 GeV.

6. from1990- Search for particles with unusual quantum numbers (exotic mesons) - experiment E852 (BNL, USA)

1) The high-voltage system for a 3053-channel lead glass photon detector.
2) Monte-Carlo simulation and the basic software package for data acquisition and analysis.
3) The unique statistics of 10^9 pion-proton interactions at 18 GeV/c has been accumulated.
4) A comprehensive partial-wave analysis for 500 000 exclusive events (pi)(p) --> (pi+)(pi-)(pi-)(p) indicates on the existence of exotic wave J(pc)=1(- +) at mass ~1.6 GeV.
5) Existence of the meson with J(pc)=0(+ +) and mass 1.8 GeV is proved.
6) The partial-wave analysis for (eta)(pi-) system testifies for the existence of 1(- +) amplitude at 1.3 GeV.
7) Further work on the partial-wave analysis of these and another states is in progress.

7. from1993- Physics of ultrarelativistic heavy ion collisions and study of quark-gluon plasma - experiment CMS in LHC (CERN)

1) Preparations for CMS experiment, data analysis.
2) Reconstruction of quarkonia and hadronic jets in heavy ion collisions under CMS conditions.
3) Monte-Carlo simulation of CMS hadronic calorimeter, its calibration and monitoring.
4) Experimental and phenomenological study of properties of hot matter (quark-gluon plasma) created in ultrarelativistic heavy ion collisions.
5) Hydrodynamical description of nucleus-nucleus interactions.

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Last update: May 14, 2015 by Igor Lokhtin