Hadron production in light and heavy, quark and antiquark jets

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The authors review four hadronization studies performed by the SLD experiment at SLAC, involving separation of light (Z{sup 0} {r_arrow} u{anti u}, d{anti d}, s{anti s}), c, and b flavors using precision vertexing, and separation of q- and {anti q}-jets using the highly polarized SLC electron beam. They measured the differences between the average charged multiplicities in Z{sup 0} {r_arrow} light, {r_arrow} c{anti c}, and {r_arrow}b{anti b} events, and found that the results were consistent with predictions of perturbative QCD. Next, they measured {pi}/{Kappa}/p/{Kappa}{sup 0}/{Lambda}{sup 0} production in light events for the first time, and compared with production in c- ... continued below

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15 p.

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Baird, K.G. & Collaboration, SLD August 1, 1996.

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Description

The authors review four hadronization studies performed by the SLD experiment at SLAC, involving separation of light (Z{sup 0} {r_arrow} u{anti u}, d{anti d}, s{anti s}), c, and b flavors using precision vertexing, and separation of q- and {anti q}-jets using the highly polarized SLC electron beam. They measured the differences between the average charged multiplicities in Z{sup 0} {r_arrow} light, {r_arrow} c{anti c}, and {r_arrow}b{anti b} events, and found that the results were consistent with predictions of perturbative QCD. Next, they measured {pi}/{Kappa}/p/{Kappa}{sup 0}/{Lambda}{sup 0} production in light events for the first time, and compared with production in c- and b-flavor events. They then examined particle production differences in light quark and antiquark hemispheres, and observed more high momentum baryons and K{sup {minus}}`s than antibaryons and K{sup +}`s in quark hemispheres, consistent with the leading particle hypothesis. Lastly, they performed a search for jet handedness in light q- and {anti q}-jets. Assuming Standard Model values of quark polarization in Z{sup 0} decays, they have set an improved upper limit on the analyzing power of the handedness method.

Physical Description

15 p.

Notes

INIS; OSTI as DE97009097

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  • DPF `96: meeting of the Division of Particles and Fields of the American Physical Society (APS), Minneapolis, MN (United States), 10-15 Aug 1996

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  • Other: DE97009097
  • Report No.: SLAC-PUB--7271
  • Report No.: CONF-960812--
  • Grant Number: AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 634119
  • Archival Resource Key: ark:/67531/metadc691134

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  • August 1, 1996

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 23, 2016, 3:33 p.m.

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Baird, K.G. & Collaboration, SLD. Hadron production in light and heavy, quark and antiquark jets, article, August 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc691134/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.