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Measurement of the polarization of the Upsilon(1S) and Upsilon(2S) states in p anti-p collisions at s**(1/2) = 1.96 TeV

SYSNO ASEP	0322412
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Measurement of the polarization of the Upsilon(1S) and Upsilon(2S) states in p anti-p collisions at s**(1/2) = 1.96 TeV
Title	Měření polarizace ypsilon (1S) a ypsilon (2S) stavů u p anti-p srážek při s** (1 / 2) = 1.96 TeV
Author(s)	Abazov, V. M. (RU) Abbott, B. (US) Abolins, M. (US) Kupčo, Alexander (FZU-D)_{RID, ORCID} Lokajíček, Miloš (FZU-D)_{RID, ORCID}
Source Title	Physical Review Letters. - : American Physical Society - ISSN 0031-9007 Roč. 101, č. 18 (2008), 182004/1-182004/7
Number of pages	7 s.
Language	eng - English
Country	US - United States
Keywords	D0 ; Tevatron ; meson ; polarization
Subject RIV	BF - Elementary Particles and High Energy Physics
R&D Projects	LA08047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	1P05LA257 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LC527 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z10100502 - FZU-D (2005-2011)
UT WOS	000260574600025
DOI	10.1103/PhysRevLett.101.182004
Annotation	We present a study of the polarization of the (1S) and (2S) states using a 1.3 fb-1 data sample collected by the D0 experiment in 2002–2006 during run II of the Fermilab Tevatron Collider. We measure the polarization parameter =(T-2L)/(T+2L), where T and L are the transversely and longitudinally polarized components of the production cross section, as a function of the transverse momentum (p) for the (1S) and (2S). Significant p-dependent longitudinal polarization is observed for the (1S). A comparison with theoretical models is presented.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2009

Number of the records: 1