THEME03-2-1040-2001/2009

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03-2-1040-2001/2009

Priority:

Status:

Approved for completion
in 2009

Nucleus and Particle Interactions at Intermediate Energies

Leader:

D.A. Mzhavia

Scientific Programme:
Investigation of processes of strong, weak and electromagnetic interaction 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.

Expected main results in 2009:

Upgrade of PEN detector at PSI for a measurement of the ⁺ e ⁺ decay branching ratio. Manufacture of drift chambers for positron tracking in the MEG detector.
Measurement with the ANKE setup using polarized beams of accelerator COSY for study of processes pd (pp)_s p^- and pp (pp)_s ⁰ and subsequent analysis of the data. Data handling and analysis of the data on reaction pp (pp)_s in the beam energy range of 0.3-0.8 GeV. First stage of experiments aiming to test the spin-filtering method for the PAX experiment.
The measurement of deuteron radiactive capture rate in muonic deuterium and analysis of the experimental results.
Determination of branching ratios for reaction channels of positive and negative pion interactions with the helium nucleus at incident pion energies 150 MeV, including the reaction channel, involving emission of a photon and the channel involving ^- production, further processing of obtained data (CCD images of reaction events), further estimation of the muon neutrino mass from ^± - decay events; performing runs at the LNP phasotron. Publication of articles with results.
The data taking on the accelerators of JINR and the meson factory at PSI (Switzerland). Study of the influence of axial pressure and the impurities on the acceptor parameters in the diamond-like superconductors. Study of the systems with the magnetic nanoparticles by the muonic technique.

List of projects:
	Project	Leader	Priority (period of realisation)
1.	DUBTO	N.A. Russakovich D.B. Pontecorvo	1 (1998-2009)
2.	CATALYSIS	D.L. Demin	1 (2003-2009)
3.	МЮОН	V.N. Duginov T.N. Mamedov	1 (1997-2009)
4.	MEG-PEN	N.A. Kuchinskiy	1 (2007-2009)
5.	SPRING	A.V. Kulikov	1 (2007-2009)

List of Activities

Activity or Experiment

Leader

Status

MEG-PEN

N.A. Kuchinskiy

Preparation
Production

SPRING

A.V. Kulikov

Data taking

DUBTO

N.A. Russakovich
G. Piragino

Data taking

CATALYSIS

D.L. Demin

Preparation
Data taking

MUON

V.N. Duginov
T.N. Mamedov

Data taking

Collaboration
Country or international organization	City	Institute or Laboratory
Azerbaijan	Baku	IP ANAS
Belarus	Minsk	NC PHEP BSU
Bulgaria	Sofia	SU
Croatia	Zagreb	RBI
Canada	Vancouver	TRIUMF
Georgia	Tbilisi	IHEPI TSU
Germany	Aachen	RWTH
	Heidelberg	Univ.
	Julich	FZJ
	Cologne	Univ.
	Munster	Univ.
	Dresden	FZD
	Stuttgart	MPI-MF
Italy	Frascati	INFN LNF
	Rome	Univ.
	Turin	INFN
Netherlands	Delft	TUDelft
Poland	Otwock-Swierk	SINS
	Cracow	NINP PAS
Romania	Timisoara	TFARC RA BT
Russia	Alexandrov	VNIISIMS
	Gatchina	PNPI RAS
	Moscow	ITEP
		GPI RAS
		MSU
		SINP MSU
		RRC KI
	Sarov	VNIIEF
	Troitsk	INR RAS
Switzerland	Zurich	UZH
		ETH
	Villigen	PSI
USA	Charlottesville, VA	UVa
	Pittsburgh, PA	Univ.
	Tucson, AZ	UA

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