Precision measurement of the {Sigma}{sup 0} hyperon mass

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The research that is described in this paper is part of a program to study strong interaction mechanisms in proton proton collisions. The program consists of two experiments: Brookhaven E766 in which we studied the reactions pp {yields} p+ all charged particles with 27.5 GeV/c incident protons and Fermilab E690 in which we studied the reactions pp {yields} p+ all charged particles with 800 GeV/c incident protons. In these experiments, we employed state-of-the-art data acquisition sys- tems and acquired large samples of data: at Brookhaven we amassed 300 million high multiplicity events and at Fermilab, 5.5 billion events. Our uncertainty ... continued below

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12 p.; Other: FDE: PDF; PL:

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Wang, M.H.L.S.; Hartouni, E.P. & Kreisler, M.N. February 17, 1998.

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Description

The research that is described in this paper is part of a program to study strong interaction mechanisms in proton proton collisions. The program consists of two experiments: Brookhaven E766 in which we studied the reactions pp {yields} p+ all charged particles with 27.5 GeV/c incident protons and Fermilab E690 in which we studied the reactions pp {yields} p+ all charged particles with 800 GeV/c incident protons. In these experiments, we employed state-of-the-art data acquisition sys- tems and acquired large samples of data: at Brookhaven we amassed 300 million high multiplicity events and at Fermilab, 5.5 billion events. Our uncertainty in the {Sigma}{sup 0} mass is more than 7 times smaller than the best previous result and was based on 16 times the statistics. Likewise, the {Sigma}{sup 0} - {Lambda}{sup 0} mass difference is more than 14 times more accurate than the previous best result. Finally, we note that this measurement is the first direct measurement of the {Sigma}{sup 0} mass.

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12 p.; Other: FDE: PDF; PL:

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OSTI as DE98054343

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  • 6. Mexican workshop on particles and fields, Morelia (Mexico), 21-27 Nov 1997

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  • Other: DE98054343
  • Report No.: UCRL-JC--129889
  • Report No.: CONF-9711168--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 303917
  • Archival Resource Key: ark:/67531/metadc681716

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  • February 17, 1998

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  • July 25, 2015, 2:20 a.m.

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  • May 5, 2016, 8:13 p.m.

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Wang, M.H.L.S.; Hartouni, E.P. & Kreisler, M.N. Precision measurement of the {Sigma}{sup 0} hyperon mass, article, February 17, 1998; California. (digital.library.unt.edu/ark:/67531/metadc681716/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.