New Measurements of Upsilon Spin Alignment at the Tevatron Metadata

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Title

  • Main Title New Measurements of Upsilon Spin Alignment at the Tevatron

Creator

  • Author: Jones, Matthew
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Science.
    Contributor Type: Organization
    Contributor Info: DOE Office of Science

Publisher

  • Name: Fermi National Accelerator Laboratory
    Place of Publication: Batavia, Illinois
    Additional Info: Fermi National Accelerator Laboratory (FNAL), Batavia, IL

Date

  • Creation: 2012-01-01

Language

  • English

Description

  • Content Description: We describe a new analysis of {Upsilon}(nS) {yields} {mu}{sup +}{mu}{sup -} decays collected in p{bar p} collisions with the CDF II detector at the Fermilab Tevatron. This analysis measures the angular distributions of the final state muons in the {Upsilon} rest frame, providing new information about {Upsilon} production polarization. We find the angular distributions to be nearly isotropic up to {Upsilon} p{sub T} of 40 GeV/c, consistent with previous measurements by CDF, but inconsistent with results obtained by the D0 experiment. The results are compared with recent NLO calculations based on color-singlet matrix elements and non-relativistic QCD with color-octet matrix elements.
  • Physical Description: 4 pages

Subject

  • Keyword: Quantum Chromodynamics
  • Keyword: Angular Distribution
  • Keyword: Fermilab Tevatron
  • Keyword: Spin Experiment-Hep
  • Keyword: Matrix Elements
  • Keyword: Polarization
  • Keyword: Production
  • Keyword: Hadrons
  • STI Subject Categories: 72 Physics Of Elementary Particles And Fields
  • Keyword: Fermilab Collider Detector
  • Keyword: Muons
  • Keyword: Alignment
  • Keyword: Physics
  • Keyword: Experiment-Hep

Source

  • Conference: Prepared for Hadron Collider Physics Symposium 2011 (HCP 2011), Paris, France, 14-18 Nov 2011

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: FERMILAB-CONF-12-019-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 1034130
  • Archival Resource Key: ark:/67531/metadc832408
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