Tests of structure functions using leptons at CDF: The charge asymmetry in W-boson decays

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The charge asymmetry of W-bosons produced in p{bar p} collisions has been measured using 19 039 W {yields} e{nu} and W {yields} {mu}{nu} decays recorded by the CDF detector during the 1992--93 Tevatron collider run. The asymmetry is sensitive to the slope of the proton`s d/u quark distribution ratio down to x < 0.01 at Q{sup 2} {approx} M{sub W}{sup 2}, where nonperturbative QCD effects are minimal. Of recent parton distribution functions, those of Martin, Roberts and Stirling are favored over those of the CTEQ collaboration. This difference is seen even though both sets agree, at the level of the ... continued below

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6 p.

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DeBarbaro, P. August 1, 1994.

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  • DeBarbaro, P. Rochester Univ., NY (United States). Dept. of Physics and Astronomy

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The charge asymmetry of W-bosons produced in p{bar p} collisions has been measured using 19 039 W {yields} e{nu} and W {yields} {mu}{nu} decays recorded by the CDF detector during the 1992--93 Tevatron collider run. The asymmetry is sensitive to the slope of the proton`s d/u quark distribution ratio down to x < 0.01 at Q{sup 2} {approx} M{sub W}{sup 2}, where nonperturbative QCD effects are minimal. Of recent parton distribution functions, those of Martin, Roberts and Stirling are favored over those of the CTEQ collaboration. This difference is seen even though both sets agree, at the level of the nuclear shadowing corrections, with the recent NMC measurements of F{sub 2}{sup {mu}n}/F{sub 2}{sup {mu}p}.

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6 p.

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INIS; OSTI as DE95014561

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  • 8. meeting Division of Particles and Fields of the American Physical Society, Albuquerque, NM (United States), 2-6 Aug 1994

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  • Other: DE95014561
  • Report No.: FNAL/C--94-246-E
  • Report No.: CONF-940816--93
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 100232
  • Archival Resource Key: ark:/67531/metadc623701

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  • August 1, 1994

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  • June 16, 2015, 7:43 a.m.

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  • April 1, 2016, 5:06 p.m.

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DeBarbaro, P. Tests of structure functions using leptons at CDF: The charge asymmetry in W-boson decays, article, August 1, 1994; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc623701/: accessed October 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.