THEME02-0-1085-2009/2013

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02-0-1085-2009/2013

Priority:

Status:

Approved for completion
in 2013

Study of the Nucleon and Baryon Structure
at COMPASS-II, CERN and H1, DESY

Leader:	A.P. Nagaytsev
Scientific leader:	I.A. Savin

Participating Countries, Institutes and International organizations:
Armenia, Belarus, Belgium, Bulgaria, Canada, CERN, Czech Republic, France, Germany, Israel, Italy, Japan, Netherlands, Poland, Russia, Switzerland, United Kingdom, USA.

Determination of the quark spin, gluon and quark orbital momenta contributions to the nucleon spin.
Study of spin-dependent structure functions of the proton and neutron, including transversity, and its kinematical variables dependences.
Sum rule tests for spin-dependent structure functions of the proton and neutron, QCD tests.
Pion and kaon polarizabilities measurements.
Search of new bound states of qluons and quarks.
Construction of a hadron calorimeter, a muon system and straw tracking chambers for the COMPASS-II spectrometer.
COMPASS-II software development and support of the CERN program library at JINR.
Study of inclusive, exclusive and semi-inclusive processes in deep inelastic scattering of muons and electrons on polarized and unpolarized targets.
Preparation for measurements of Generalized Parton Distributions and transverse hadron structure in Drell-Yan processes.

Expected main results in 2013:

Participation in data taking in COMPASS-II spectrometer at CERN.
Support of HCAL1 during 2013 run.
Support of MW1 during 2013 run.
Performance studies of the tracking detectors MWPC, STRAW, W4/5 for COMPASS-II.
Project preparation on measurements of Generalized Parton Distributions and transverse hadron structure in Drell-Yan processes.
Software development and simulation of the various reactions, studying in COMPASS-II. Analyzing of the COMPASS-II. data at JINR and publications preparation.
Theoretical studies of spin effects in COMPASS-II.
Measurement of dijet cross section and energy flow in deep-elastic scattering with a leading proton in the final state. Measurement of elastic -meson cross section in deep-elastic scattering with a leading proton in the final state.

List of projects:
	Project	Leader	Priority (period of realisation)
1.	COMPASS-II	A.P. Nagajtsev<	1 (2011-2013)

List of Activities

Activity or Experiment

Leader

Status

Laboratory or other
Division of JINR

Main researchers

Experiment COMPASS

A.P. Nagaytsev

Data taking
Data analysis

Hadron calorimeter

I.A. Savin
O.P. Gavrishchuk

Maintenance

VBLHEP

O.P. Gavrishchuk, G.V. Meshcheryako, N.N. Vlasov, A.S. Yukaev

Electromagnetic calorimeter

A.P. Nagaytsev,
Z.V. Krumshtein

Preparation
R&D

VBLHEP

O.P. Gavrishchuk, G.V. Meshcheryakov, N.N. Vlasov, A.S. Yukaev

DLNP

I.E. Tchirikov-Zorin, N. Tchepurnov, N.V. Anfimov, T.V. Rezinko, N. Utkin, I. Orlov, V.V. Tchalyshev, Z.Ya. Sadygov

Muon system

G.D. Alekseev

Maintenance

DLNP

V.K. Rodionov, N.I. Zhuravlev, N.A. Kutchinsky, V.L. Malyshev

Tracking systems

V.D. Peshekhonov
G.D. Alexeev

Maintenance

VBLHEP

V.A. Anosov, E.A. Garifyanov

DLNP

V.K. Rodionov, N.I. Zhuravlev, N.A. Kutchinsky, V.L. Malyshev

Software development.
Data analysis

E.V. Zemlyanichkina

Realization

VBLHEP

I.A. Savin, V.Yu. Alexain, D.V. Peshekhonov, G.I. Smirnov, A.P. Nagaytsev, O.M. Kuznetsov, N.N. Vlasov, Yu.I. Ivanshin, A.Yu. Korzenev, M.G Sapozhnikov, N.S. Rossijskaya, V.L. Rapatsky, A.A. Antonov

DLNP

A.G. Olshevsky, A.V. Guskov, Z.V. Krumshtein, O.Yu. Shevtchenko, R.R. Akhunzyanov

LIT

P.V. Zrelov, V.Yu. Lavrenteva

Measurements of generalized
parton distributions and
transverse spin structure
in Drell-Yan processes. Development of new electro-magnetic
calorimeter

A.P. Nagaytsev
I.A. Savin
O.Yu. Shevchenko

Realization

VBLHEP

O.P. Gavrishchuk, A.A Antonov, G.V Meshcheryakov, N.N. Vlasov, O.M. Kuznetsov

DLNP

A.G. Olshevskiy, Z.V. Krumshtein, A.V. Guskov

LIT

P.V. Zrelov

BLTP

A.V. Efremov, O.V. Teryaev

Preparation of the project
on measurement of proton form-factor ratios
at 13-15 GeV/c

A.P. Nagaytsev,
I.A. Savin
N.M. Piskunov

Project preparation

VBLHEP

O.P. Gavrishchuk, G.V. Meshcheryakov

II.

Experiment H1

M.N. Kapishin

Data analysis

VBLHEP

V.N. Spaskov, A.N. Morozov, D.A. Nikitin

III.

Theoretical studies

A.V. Efremov

Realization

BLTP

S.B. Gerasimov, O.V. Teryaev, A.V. Kotikov, A.E. Dorokhov, N.I. Kochelev, A.M. Sidorov

Collaboration
Country or International Organization	City	Institute or Laboratory
Armenia	Yerevan	ANL
Belarus	Minsk	NC PHEP BSU
Belgium	Mons	UMONS
	Brussels	ULB
Bulgaria	Sofia	INRNE BAS
		SU
Canada	Vancouver	TRIUMF
	Edmonton	U of A
CERN	Geneva
Czech Republic	Prague	CTU
France	Saclay	IRFU
Germany	Bielefeld	Univ.
	Bochum	RUB
	Bonn	UniBonn
	Freiburg	Univ.
	Hamburg	DESY
	Heidelberg	MPIK
	Munich	LMU
		TUM
	Mainz	JGU
	Erlangen	FAU
Israel	Tel Aviv	TAU
Italy	Turin	INFN
	Trieste	INFN
	Frascati	INFN LNF
Japan	Chiba	Toho Univ.
	Nagoya	Nagoya Univ.
	Osaka	OCU
	Sendai	Tohoku Univ.
	Tsukuba	KEK
	Yamagata	Yamagata Univ.
Netherlands	Amsterdam	NIKHEF
Poland	Warsaw	WUT
Russia	Moscow	SINP MSU
		LPI RAS
	Moscow, Troitsk	INR RAS
	Gatchina	PNPI
	Protvino	IHEP
Switzerland	Zurich	UZH
United Kingdom	Liverpool	Univ.
USA	Argonne, IL	ANL
	Boulder, WY	CU
	Cambridge, MA	MIT
	Pasadena, CA	Caltech

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Study of the Nucleon and Baryon Structure at COMPASS-II, CERN and H1, DESY

Study of the Nucleon and Baryon Structure
at COMPASS-II, CERN and H1, DESY