A preliminary improved test of the flavor independence of strong interactions

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The authors present an improved comparison of the strong couplings of gluons to light (u, d, and s), c, and b quarks, determined from multijet rates in flavor-tagged samples of hadronic Z{sup 0} decays recorded with the SLC Large Detector at the SLAC Linear Collider between 1993 and 1995. Flavor separation on the basis of lifetime and decay multiplicity differences among hadrons containing light, c, and b quarks was made using the SLD precision tracking system, yielding tags with high purity and low bias against {ge} 3-jet final states. They find: {alpha}{sub s}{sup uds}/{alpha}{sub s}{sup all} = 0.997 {+-} 0.011(stat) ... continued below

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18 p.

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Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD June 1, 1997.

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Description

The authors present an improved comparison of the strong couplings of gluons to light (u, d, and s), c, and b quarks, determined from multijet rates in flavor-tagged samples of hadronic Z{sup 0} decays recorded with the SLC Large Detector at the SLAC Linear Collider between 1993 and 1995. Flavor separation on the basis of lifetime and decay multiplicity differences among hadrons containing light, c, and b quarks was made using the SLD precision tracking system, yielding tags with high purity and low bias against {ge} 3-jet final states. They find: {alpha}{sub s}{sup uds}/{alpha}{sub s}{sup all} = 0.997 {+-} 0.011(stat) {+-} 0.011(syst) {+-} 0.005(theory), {alpha}{sub s}{sup c}/{alpha}{sub s}{sup all} = 0.984 {+-} 0.042 {+-} 0.053 {+-} 0.022, {alpha}{sub s}{sup b}/{alpha}{sub s}{sup all} = 1.022 {+-} 0.019 {+-} 0.023 {+-} 0.012.

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18 p.

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INIS; OSTI as DE97007263

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  • 18. international symposium on lepton photon interactions, Hamburg (Germany), 28 Jul - 1 Aug 1997

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  • Other: DE97007263
  • Report No.: SLAC-PUB--7573
  • Report No.: CONF-970787--5
  • Grant Number: AC03-76SF00515;FG02-91ER40676;FG03-91ER40618;FG03-92ER40689;FG03-93ER40788;FG02-91ER40672;FG02-91ER40677;AC03-76SF00098;FG02-92ER40715;FC02-94ER40818;FG03-96ER40969;FG02-91ER40627;FG02-95ER40896;FG02-92ER40704
  • Office of Scientific & Technical Information Report Number: 537337
  • Archival Resource Key: ark:/67531/metadc691324

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  • June 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 23, 2016, 3:13 p.m.

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Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD. A preliminary improved test of the flavor independence of strong interactions, article, June 1, 1997; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc691324/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.