Inclusive Rates and Spectra of the Lambda, Cascade, and Omega Hyperons atBaBar

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We employ Runs 1-4 off-peak data sample (about 21.5 fb{sup -1}) to produce the current world-best spectra and production rates measurements for three strangely-flavored baryons: the {Lambda} hyperon, the cascade hyperon, and the {Omega} hyperon. These improved measurements shall enable theoretical and phenomelogical workers to generate more realistic models for the hadronization process, currently one of the unresolved problem areas in the standard model of particle physics. This analysis was conducted using codes from release 16 series. We report the production rate at 10.54 GeV for the {Lambda} as 0.0900 {+-} 0.0006(stat.) {+-} 0.0039(sys.) per hadronic event. Our measured production ... continued below

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175 pages

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Chien, Andrew L. May 19, 2008.

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Description

We employ Runs 1-4 off-peak data sample (about 21.5 fb{sup -1}) to produce the current world-best spectra and production rates measurements for three strangely-flavored baryons: the {Lambda} hyperon, the cascade hyperon, and the {Omega} hyperon. These improved measurements shall enable theoretical and phenomelogical workers to generate more realistic models for the hadronization process, currently one of the unresolved problem areas in the standard model of particle physics. This analysis was conducted using codes from release 16 series. We report the production rate at 10.54 GeV for the {Lambda} as 0.0900 {+-} 0.0006(stat.) {+-} 0.0039(sys.) per hadronic event. Our measured production rate at the same energy for the cascade hyperon is 0.00562 {+-} 0.00013(stat.) {+-} 0.00045(sys.) per hadronic event, while that for the {Omega} hyperon is 0.00027 {+-} 0.00004(stat.) {+-} 0.0008(sys.) per hadronic event. The spectral measurements for the respective particles also constitute current world-best measurements.

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175 pages

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  • Report No.: SLAC-R-899
  • Grant Number: AC02-76SF00515
  • DOI: 10.2172/928735 | External Link
  • Office of Scientific & Technical Information Report Number: 928735
  • Archival Resource Key: ark:/67531/metadc899017

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  • May 19, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • July 25, 2017, 4:05 p.m.

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Chien, Andrew L. Inclusive Rates and Spectra of the Lambda, Cascade, and Omega Hyperons atBaBar, thesis or dissertation, May 19, 2008; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc899017/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.