THEME02-2-1042-2002/2006

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02-2-1042-2002/2006

Priority:

Status:

Approved for completion
in 2006

Study of Rare Processes

Leader:

A.S. Kurilin

Scientific Programme:

Test of Standard Model predictions. Investigation of rare decays of K-mesons. Measurement of the branching ratio for the decay K ⁰_L ⁰ with direct CP-parity violation in experiment E391a at KEK.
Test of the nuclear Hamiltonian in few-nucleon systems. Study of 3N interactions with a polarized neutron beam and a polarized deuteron target at an energy about 16 MeV.
Measurement of _L and _T in the nd-scattering.
Experimental verification of the Gerasimov-Drell-Hearn (GDH) sum rule. Measurement of spin-dependent asymmetry _p - _a using thenew polarized deuteron target and Crystal Ball detector at polarized photon energies up to 1.5 GeV.

Expected main results in 2006:

Development of GEANT4-based simulation, DAQ and data analysis software.
Production and test of the new detectors.
Data analysis and extraction of new, the most exact in the world, branching ratio for the decay K ⁰_L ⁰ with direct CP-parity violation.
Design of the K ⁰_L beam line and setup for the experiment at KEK (Japan).
Design of the K ⁰_L beam line and KLOD setup for the experiment at U-70 (SRC-IHEP).
Measurement of _L in the nd-scattering. Modification of the experimental design used in the _L experiments for transverse polarization.
Adapting of the Dubna-made polarized target in Mainz.

List of projects:
	Project	Leader	Priority (period of realisation)
1.	E391a	A.S. Kurilin	1 (2001-2006)
2.	NN & GDH	A. Kovalik	1 (2006-2006)

List of Activities

Activity or Experiment

Leader

Status

E391a

A.S. Kurilin

R&D
Data taking
Data analysis

NN
GDH

A. Kovalik
S.B. Gerasimov
I.L. Pisarev
Yu.A. Usov

R&D
Data taking

Collaboration
Country or international organization	City	Institute or Laboratory
Belarus	Gomel	GSU
	Minsk	NC PHEP BSU
Czech Republic	Prague	CU
France	Saclay	SPhN CEA DAPNIA
Georgia	Tbilisi	HEPI TSU
Germany	Mainz	JGU
Japan	Ibaraki	Ibaraki Univ.
	Kyoto	Kyoto Univ.
	Osaka	Osaka Univ.
		RCNP
	Saga	Saga Univ.
	Tsukuba	KEK
	Yamagata	Yamagata Univ.
JINR	Dubna	BLTP
		LPP
		LIT
Poland	Cracow	JU
Republic of Korea	Pusan	PNU
Russia	Moscow	NIKIET
		GPI RAS
		VNIIXT
		NIKIET
		SINP MSU
	Protvino	SRC-IHEP
	Troitsk	INR RAS
Slovak Republic	Kosice	IEP SAS
Ukraine	Kharkov	KFTI NASU
USA	Chicago, IL	UChicago
	Tempe, AZ	ASU
Taiwan	Taipei	NTU

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