THEME02-0-1085-2009/2016

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02-0-1085-2009/2016

Priority:

Status:

Extended

Studies of the Nucleon and Hadron Structure at CERN

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, Ukraine, United Kingdom, USA.

Scientific Programme:
Studies of the Primakoff reactions and diffractive proctsses. Studies of the generalized parton distributions in various exclusive processes and participation in construction of new electromagnatic calorimeter. Studies of the exclusive production of photons, pions and vector mesons in DIS and DVCS. Measurements of nucleon structure in the Drell-Yan processes. Study of inclusive and semi-inclusive processes in Deep Inelastic Scattering (DIS) of muons and hadrons on polarized targets. The mesurements of the new structure functions characterizing the transverse quark distributions in polarized nucleons.

Measurements of the nucleon structure functions, polarized parton distributions.
Pion and kaon polarizabilities measurements.
Detector preparation for the COMPASS-II spectrometer. Creation of the new electromagnetic calorimeter.
Software creation and development for simulation and data analysis. System support of CERN software in COMPASS-II.
Studies of the inclusive production of photons, pions and -mesons in DIS and DVCS.
Measurements of nucleons structure in the Drell-Yan processes.

Expected main results in 2014:

Preparing for measurement of the Drell-Yan process.
Participation in the data taking.
Maintenance of the hadron calorimeter HCAL1 and muon system MW1.
Performance studies of the tracking detectors MWPC, STRAW, W4/5 for COMPASS-II.
Completion of the production and testing of the new electromagnetic calorimeter ECALO for COMPASS-II.
Software development and simulation of the various reactions, studied in COMPASS-II. Analyzing of the COMPASS-II data at JINR and publications preparation.
Theoretical studies COMPASS-II.

List of projects:
	Project	Leader	Priority (period of realisation)
1.	COMPASS-II	A.P. Nagajtsev	1 (2011-2016)

List of Activities

Activity or Experiment

Leaders

Status

Laboratory or other
Division of JINR
Responsible person

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, V.A. Anosov

Electromagnetic calorimeter

A.P. Nagaytsev,
Z.V. Krumshtein

Preparation
R&D

VBLHEP

O.P. Gavrishchuk, G.V. Meshcheryakov, N.N. Vlasov, A.S. Yukaev, N.S. Rossiyskaya, O.M. Kuznetsov, V.S. Batozskaya, V.A. Anosov

DLNP

I.E. Tchirikov-Zorin, N. Tchepurnov, N.V. Anfimov, T.V. Rezinko, N. Utkin, I. Orlov, V.V. Tchalyshev, Z.Ya. Sadygov, K.Yu. Gasnikova, V.K. Rodionov, A.V. Rybnikov, D.V. Fedossev, A.A. Nozdrin, A.S. Selyunin, A.G. Olshevsky, V.O. Gromov

Muon system

G.D. Alekseev

Maintenance

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, N.S. Rossijskaya, A.A. Antonov, O.Yu. Shevtchenko, R.R. Akhunzyanov, R. Gushcherski, A.V. Ivanov, V.S. Batozskaya

DLNP

A.G. Olshevsky, A.V. Guskov, Z.V. Krumshtein, V.K. Rodionov, K.Yu. Gasnikova, I.A. Orlov, T.V. Rezinko

LIT

P.V. Zrelov

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, Yu.I. Ivanshin, O.Yu.Shevtchenko, R.R. Akhuzyanov, N.S. Rossijskaya, E.V. Zemlyanichkina, A.V. Ivanov

DLNP

A.G. Olshevskiy, Z.V. Krumshtein, A.V. Guskov, V.K. Rodionov, K.Yu. Gasnikova, I.A. Orlov, T.V. Rezinko

BLTP

A.V. Efremov, O.V. Teryaev

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

I.A. Savin
N.M. Piskunov

Project preparation

VBLHEP

O.P. Gavrishchuk, G.V. Meshcheryakov

II.

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	CERN
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
Ukraine	Kharkov	ISM NASU
United Kingdom	Liverpool	Univ.
USA	Argonne, IL	ANL
	Boulder, WY	CU
	Cambridge, MA	MIT
	Pasadena, CA	Caltech

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