THEME02-2-1098-2010/2012

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02-2-1098-2010/2012

Priority:

Status:

New

Study of Processes with Symmetry Violation

Leader:

A.S. Kurilin

Participating Countries, Institutes and International organizations:
Czech Republic, France, Japan, Poland, Republic of Korea, Russia, Slovak Republic, Taiwan, Ukraine, USA.

Scientific Programme:
Test of Standard Model predictions. Investigation of rare decays of K-mesons. Search for the K ⁰_L

⁰

decay with direct CP violation in experiments on JPARC and U-70 (SRC-IHEP.) Search for the K ⁰_L

⁰

⁰ + X decay.
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 the new polarized deuteron target and the Crystal Ball detector at polarized photon energies up to 1.5 GeV.

Expected main results in 2010:

Development of GEANT4-based simulation, DAQ and data analysis software.
Production and test of the new detectors.
Data analysis and extraction of the new, world's most exact branching ratio for the decay K ⁰_L ⁰ with direct CP violation.
Design of the K ⁰_L beam line and the KOTO setup for the experiment at JPARC (Japan).
Design of the K ⁰_L beam line 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 implementation)
1.	NN & GDH	A. Kovalik	1 (2006-2011)

List of Activities

Activity or experiment

Leader

Status

Laboratory

Responsible
person

Leading researchers
and number of participants

Search for the K ⁰_L ⁰ decay

A.S. Kurilin

R&D
Data taking
Data analysis

DLNP

V.A. Baranov
V.A. Bednyakov

G. Dolbilova
E.S. Kuzmin
A.S. Moiseenko
S.Yu. Perov
S.Yu. Porokhovoi
V.M. Romanov
Z.B. Tsamalaidze
M.P. Chavleyshvily

BLTP

D.I. Kazakov
A.V. Gladyshev

VBLHEP

A.I. Malakhov
V.A. Krasnov

NN & GDH

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

R&D
Data taking

DLNP

N.S. Borisov + 7 pers.
E.V. Kuzmin
S.S. Kamalov

Collaboration
Country or international organization	City	Institute or Laboratory
Czech Republic	Prague	CU
France	Saclay	IRFU
Japan	Ibaraki	Ibaraki Univ.
	Kyoto	Kyoto Univ.
	Osaka	Osaka Univ.
		RCNP
	Saga	Saga Univ.
	Tsukuba	KEK
	Yamagata	Yamagata Univ.
Poland	Cracow	JU
Republic of Korea	Pusan	PNU
Russia	Moscow	GPI RAS
		ARRICT
		NIKIET
		SINP MSU
	Protvino	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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