THEME02-0-1025-98/2005

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02-0-1025-98/2005

Priority:
Status:

1
Extended

Study of the Hadron Structure in the Experiments with the COMPASS (NA58) and HERMES (DESY) Spectrometers

Leader:
Deputies:

I. Savin
M. Sapozhnikov
L. Tkatchev

Scientific Programme:

- Study of inclusive and semi-inclusive processes in deep inelastic scattering of muons and electrons on polarized and unpolarized targets.
- Search for effects of nucleon strange sea and gluon polarization in the production of

hyperons and charm mesons.
- Determination of the quark spin, gluon and quark orbital momenta contributions to the nucleon spin.
- Sum rule tests for spin-dependent structure functions of the proton and neutron, QCD tests.
- Spectroscopy of charmed hadrons.
- Construction of a hadron calorimeter, a muon system and straw tracking chambers for the COMPASS spectrometer.
- Construction of minidrift chambers for HERMES spectrometer.

Expected main results in 2001:

Commissioning of the calorimeter for COMPASS.
Commissioning of the muon wall detectors for COMPASS.
Participation in design of RICH for COMPASS.
Construction and commissioning of tracking detectors (straw and MWPC) for COMPASS.
Construction and commissioning of the minidrift chambers for HERMES.
Development of the COMPASS and HERMES software and simulations.
Participation in data taking and analysis with COMPASS.
Participation in data taking and analysis with HERMES.
Theoretical studies of spin effects in COMPASS and HERMES.

List of Activities
	Activity or project	Spokespersons	Status
I.	COMPASS	I. Savin	Realization
1)	Construction of hadron calorimeter	I. Savin	Realization
2)	Construction of muon system	G. Alekseev	Realization
3)	R&D for RICH system	M. Finger G. Smirnov	Realization
4)	Tracking system	V. Peshekhonov O. Denisov	Realization
5)	Monte Carlo simulation and software preparation	M. Sapozhnikov V. Krivokhijine	Realization
II.	HERMES	V. Krivokhijine	Data taking Data analysis
III.	Theoretical studies	A. Efremov	Realization

Participating Institutes and Organizations

Armenia	YerPhI (Yerevan)
Belarus	NC PHEP BSU (Minsk)
Belgium	UMH (Mons), Univ. (Brussels)
Bulgaria	INRNE, US (Sofia)
Canada	TRIUMF, UA (Edmonton)
CERN
Czech Republic	CTU, Charles Univ. (Prague) ISI (Brno), OL (Turnov), TU (Liberec)
Finland	Univ. (Helsinki)
France	DAPNIA (Saclay)
Georgia	TSU (Tbilisi)
Germany	LMU (Munich), Univ. (Bielefeld, Bochum) PFWU (Bonn), FAU (Nuremberg) ALUF (Freiburg), MPIK (Heidelberg) JGU (Mainz)
	DESY
Israel	TAU (Tel Aviv)
Italy	INFN (Turin, Trieste, Frascati)
Japan	Toho Univ. (Chiba), Nagoya Univ. (Nagoya) OCU (Osaka), Tohoku Univ. (Sendai) Yamagata Univ. (Yamagata)
JINR	DLNP, BLTP, LPP
Netherlands	NIKHEF (Amsterdam)
Poland	WU (Warsaw)
Romania	INFIN-HH (Bucharest)
Russia	SRINP MSU (Moscow), SRC-IHEP (Protvino) PINP (Gatchina), INR (Troitsk)
UK	Univ. (Liverpool)
USA	MIT (Cambridge), ANL (Argonne) CALTECH (Pasadena), UCB (Boulder)

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Study of the Hadron Structure in the Experiments with the COMPASS (NA58) and HERMES (DESY) Spectrometers

Leader:Deputies:

Scientific Programme:

List of Activities

Participating Institutes and Organizations

Leader:
Deputies: