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Measurement of Upsilon production for p + p and p + d interactions at 800 GeV/c |
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| Authors: | Zhu L Y Reimer P E Mueller B A Awes T C Brooks M L Brown C N Bush J D Carey T A Chang T H Cooper W E Gagliardi C A Garvey G T Geesaman D F Hawker E A He X C Howell D E Isenhower L D Kaplan D M Kaufman S B Klinksiek S A Koetke D D Lee D M Lee W M Leitch M J Makins N McGaughey P L Moss J M Nord P M Papavassiliou V Park B K Petitt G Peng J C Sadler M E Sondheim W E Stankus P W Thompson T N Towell R S Tribble R E Vasiliev M A Webb J C Willis J L Winter P Wise D K Yin Y Young G R;FNAL E/NuSea Collaboration |
| Institution: | University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. |
| Abstract: | We report a high statistics measurement of Upsilon production with an 800 GeV/c proton beam on hydrogen and deuterium targets. The dominance of the gluon-gluon fusion process for Upsilon production at this energy implies that the cross section ratio, sigma(p+d-->Upsilon)/2sigma(p+p-->Upsilon), is sensitive to the gluon content in the neutron relative to that in the proton. Over the kinematic region 0 |
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