THEME03-2-1101-2010/2012

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03-2-1101-2010/2012

Priority:

Status:

In-progress

Physics of Light Mesons

Leader:

A.V. Kulikov

Participating Countries, Institutes and International organizations:
Belarus, Bulgaria, Croatia, Canada, Czech Republic, Georgia, Germany, Italy, Netherlands, Poland, Romania, Russia, Switzerland, USA, Uzbekistan.
Scientific Programme:
Investigation of strong, weak and electromagnetic interactions of elementary particles and light nuclei at intermediate energies with the aim of determining symmetries and dynamics of the interactions. Development and construction of setups for experiments at accelerators (JINR phasotron, PSI meson factory, COSY proton synchrotron) for obtaining new information and testing the present theoretical views in the topics. Development of projects for new experiments and experimental methods for intermediate-energy physics.
Experimental verification of the Gerasimov-Drell-Hearn (GDH) sum rule. Measurement of spin-dependent asymmetry

_p -

_a using the new polarized deuteron target and the Crystal Ball detector at polarized photon energies up to 1.5 GeV. Experimental study of single-spin asymmetries in the light resonance production with 34-GeV

^- beam.

Expected main results in 2012:

Data taking in measurement of the µ ⁺ e ⁺ decay (MEG). Processing of the experimental data.
Preliminary analysis of the process d (pp)_s p measured with a polarized beam. Measurements of the reaction (pp )_sn, at COSY.
Experimental study of M1 and E0 transitions in the pt-fusion reaction in the ptµ molecule. Preparation of the experiment.
Determination of branching ratios for reaction channels of positive and negative pion interactions with the helium nucleus at incident pion energies 68 MeV, including the reaction channel with emission of a photon and the channel with -isobar production, further processing of the data (CCD images of reaction events), further estimation of the muon neutrino mass from decay events; performing runs at the LNP phasotron. Publication of results.
Study of the influence of the impurities on the acceptor parameters in the diamond-like and wide-gap semiconductors. Study of the properties of superparamagnetic ferritic nanoparticles in a non-magnetic matrix.
Upgrade of the PEN detector at PSI for measurement of the ⁺ e ⁺ decay branching ratio. Manufacture of drift chambers for positron tracking in the MEG detector.
Measurement of transverse asymmetries T and F in photoproduction in the region of the S11(1535) resonance (circularly polarized photon beam and transversely polarized proton target)(GDH)
Manufacture and tests of the "Active Target" (GDH)
Measurement of A_N for the inclusive and exclusive reactions ^-p (782) and ^-p ^'(958)n.

List of projects:
	Project	Leader	Priority (period of realisation)
1.	PAINUC	N.A. Russakovich D.B. Pontecorvo	1 (2010-2012)
2.	SPRING	A.V. Kulikov	1 (2010-2012)
3.	MEG-PEN	N.A. Kuchinskiy	1 (2010-2012)
4.	MUON	V.N. Duginov	1 (2011-2013)
5.	TRITON	D.L. Demin	1 (2011-2013)
6.	GDH&SPASCHARM	Yu. Usov A. Kovalik	1 (2011-2013)

List of Activities

Activity or Experiment

Leader

Status

Laboratory and
Responsible person

Main researchers for the Laboratory

MEG-PEN Project

N.A. Kuchinskiy

Preparation
Data taking

DLNP

S.M. Korenchenko +6 pers., N.A. Kuchinskiy + 6 pers.

SPRING Project

A.V. Kulikov

Data taking
Data analysis

DLNP

A.V. Kulikov, V.I. Komarov, Yu.N. Uzikov, A.D. Volkov, O. Imambekov, G. Macharashvili, N. Kadaridze, S.N. Dymov, V.V. Shmakova, T.I. Azaryan, V.S. Kurbatov, D.A. Tsirkov

PAINUC Project

N.A. Russakovich
G. Piragino

Data taking
Data analysis

DLNP

G.B. Pontecorvo, V.I. Lyashenko, N.S. Angelov, S.A. Baginyan, Yu.A. Batusov, P.N. Batyuk, I.A. Belolaptikov, T.D. Blokhintseva, A.V. Demyanov, V.A. Drozdov, V.N. Frolov, V.M. Grebenyuk, V.V. Ivanov, A.S. Kirilov, V.E. Kovalenko, A.S. Moiseenko, A.M. Rozhdestvensky

LIT

V.V. Ivanov + 3 pers.

LRB

V.A. Panyushkin

FLNP

V.I. Prikhodko, V.A. Drozdov

MUON Project

V.N. Duginov
T.N. Mamedov

Data taking
Data analysis

DLNP

E.I. Bunyatova, V.N. Duginov, K.I. Gritsaj, T.N. Mamedov, A.I. Rudenko, G.D. Soboleva, V.A. Stolupin

FLNP

M. Balasoiu + 2 pers.

TRITON Project

D.L. Demin
V.V. Filchenkov

Preparation

DLNP

D.L. Demin, V.V. Filchenkov, A.M. Artikov, N.A. Baranova, A.I. Boguslavsky, V.P. Volnykh, N.N. Grafov, K.I. Gritsaj, V.N. Duginov, V.I. Kolomorets, A.D. Konin, A.P. Kustov, N.N. Kuchinskaya, T.N. Mamedov, A.I. Puzynin, A.I. Rudenko, A.V. Simonenko, S.V. Filin, V.A. Stolupin, Yu.A. Polyakov, S.A. Gustov, N.A. Shakun, E.V. Kolesov, S.A. Yukhimchuk

LRB

V.B. Buchnev

GDH&SPASCHARM Project

Yu. Usov
A. Kovalik

Data taking
Data processing

DLNP

N.S. Borisov, N.A. Bazhanov, A.N. Fedorov, V.A. Kalinnikov, E.S. Kuzmin, I.L. Pisarev, Yu.A. Plis

BLTP

S.B. Gerasimov, S.S. Kamalov

Collaboration
Country or International Organization	City	Institute or Laboratory
Belarus	Minsk	NC PHEP BSU
Bulgaria	Sofia	SU
Czech Republic	Prague	CU
	Rez	NRI
France	Saclay	IRFU
Croatia	Zagreb	RBI
Canada	Vancouver	TRIUMF
Georgia	Tbilisi	HEPI TSU
Germany	Aachen	RWTH
	Heidelberg	Univ.
	Julich	FZJ
	Cologne	Univ.
	Dresden	HZDR
	Munster	Univ.
	Stuttgart	MPI-MF
Italy	Frascati	INFN LNF
	Rome	Univ. "La Sapienza"
	Turin	INFN
Netherlands	Delft	TUDelft
Poland	Krakow	NINP PAS
	Otwock-Swierk	NCNR
Romania	Timi soara	CFATR
Russia	Alexandrov	VNIISIMS
	Gatchina	PNPI RAS
	Moscow	ITEP
		GPI RAS
		MSU
		SINP MSU
		NRC KI
	Sarov	VNIIEF
	Troitsk	INR RAS
Switzerland	Zurich	UZH
	Villigen	PSI
USA	Charlottesville, VA	UVa
	Pittsburgh, PA	Pitt
	Tucson, AZ	UA

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