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Measurement of the polarization of the $\Upsilon(1S)$ and $\Upsilon(2S)$ states in $p\bar{p}$ collisions at $\sqrt{s}=$1.96 TeV [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
7 pages : digital, PDF file
Additional Creators
Fermi National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We present a study of the polarization of the Υ(1S) and Υ(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 α = (σ{sub T} - 2σ{sub L})/(σ{sub T} + 2σ{sub L}), where σ{sub T} and σ{sub L} are the transversely and longitudinally polarized components of the production cross section, as a function of the transverse momentum (p{sub T}{sup Υ}) for the Υ(1S) and Υ(2S). Significant p{sub T}{sup Υ}-dependent longitudinal polarization is observed for the Υ(1S). A comparison with theoretical models is presented.
Report Numbers
E 1.99:fermilab-pub-08-089-e
fermilab-pub-08-089-e
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
04/01/2008.
"fermilab-pub-08-089-e"
"arXiv eprint number arXiv:0804.2799"
FT
Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Aguilo, E.; Ahsan, M.; Abazov, V.M.; Adams, T.; Alexeev, G.D.; Alkhazov, G.; Ahn, S.H.
Funding Information
AC02-07CH11359
View MARC record | catkey: 14707390