THEME02-0-1085-2009/2016

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02-0-1085-2009/2016

Priority:

Status:

Approved for completion
in 2016

Studies of the Nucleon and Hadron Structure at CERN

Leader:

A.P. Nagaytsev

Participating Countries, Institutes and International organizations:
Armenia, Belarus, Bulgaria, CERN, Czech Republic, France, Germany, Israel, Italy, Japan, 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.
Search of new bound states of quarks and gluons.
Measurements of nucleons structure in the Drell--Yan processes.
Studies of the inclusive production of photons, pions and $\rho$--mesons in DIS and DVCS.
Software creation and development for simulation and data analysis. System support of CERN software in COMPASS--II.
Creation of the new electromagnetic calorimeter for COMPASS--II.
Detector preparation for the COMPASS--II spectrometer.

Expected main results in 2016:

Measurement of asymmetries in processes of the exclusive birth of photons (DVCS), -mesons and vector mesons.
Participation in the data taking.
Maintenance of the hadron calorimeter HCAL1 and muon system MW1.
Preparation for a data taking the new electromagnetic calorimeter ECALO. Support of ECALO during data taking.
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 for COMPASS-I and 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

Leader

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

G.V. Meshcheryakov, N.N. Vlasov, A.S. Yukaev, V.A. Anosov

DLNP

A.S. Selyunin

Electromagnetic calorimeter

A.P. Nagaytsev,
Z.V. Krumshtein

Preparation
R&D

VBLHEP

V.V. Astakhov, O.P. Gavrishchuk, G.V. Meshcheryakov, A.S. Yukaev, N.S. Rogacheva, O.M. Kuznetsov, V.A. Anosov

DLNP

A.I. Antoshkin, V.M. Kudryavtsev, M.V. Nikitin, I.E. Tchirikov-Zorin, N.V. Anfimov, T.V. Rezinko, I.A. Orlov, V.V. Tchalyshev, A.V. Rybnikov, D.V. Fedossev, A.S. Selyunin, A.G. Olshevskiy, O.V. Gromov

Muon system

G.D. Alekseev

Maintenance

DLNP

V.M. Abazov, L.S. Vertogradov, N.I. Zhuravlev, N.A. Kutchinsky, V.L. Malyshev, A.A. Piskun, A.G. Samartsev, V.V. Tokmenin

Software development.
Data analysis

E.V. Zemlyanichkina

Realization

VBLHEP

I.A. Savin, D.V. Peshekhonov, G.I. Smirnov, N.O. Mitrofanov, A.P. Nagaytsev, O.M. Kuznetsov, Yu.I. Ivanshin, N.S. Rogacheva, R.R. Akhunzyanov, R. Gushcherski, A.V. Ivanov, V.S. Batozskaya, E.A. Salmina

DLNP

A.G. Olshevsky, A.V. Guskov, Z.V. Krumshtein, E.O. Mitrofanov, K.Yu. Gasnikova, I.A. Orlov, T.V. Rezinko, A.V. Rybnikov, A.S. Selyunin

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

Realization

VBLHEP

O.P. Gavrishchuk, G.V Meshcheryakov, O.M. Kuznetsov, Yu.I. Ivanshin, R.R. Akhuzyanov, N.S. Rogacheva, E.V. Zemlyanichkina, A.V. Ivanov

DLNP

A.G. Olshevskiy, Z.V. Krumshtein, A.V. Guskov, K.Yu. Gasnikova, I.A. Orlov, N.V. Anfimov, T.V. Rezinko, A.V. Rybnikov, A.S. Selyunin

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	Foundation ANSL
Belarus	Minsk	NC PHEP BSU
		JIPNR-Sosny NASB
Bulgaria	Sofia	INRNE BAS
		SU
CERN	Geneva	CERN
Czech Republic	Prague	CU
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.
Poland	Warsaw	UW
Russia	Moscow	SINP MSU
		LPI RAS
	Moscow, Troitsk	INR RAS
	Gatchina	PNPI
	Protvino	IHEP
Switzerland	Zurich	UZH
Ukraine	Kharkov	ISMA NASU
United Kingdom	Liverpool	Univ.
USA	Urbana, IL	I

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