Hypernuclear physics with the (/pi//sup +/, K/sup +/) reaction

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The study of hypernuclei affords unique insights into the nature of hadronic forces beyond those obtainable from ordinary nuclear physics research. A hypernucleus consists of one or more hyperons bound to a nuclear core. In the SU(3) classification, /Lambda/,/Sigma/, and /Xi/ hyperons occupy the same octet representation of spin-parity /1/2//sup +/ baryons as the neutron and proton, the familiar constituents of ordinary nuclei. The /Lambda/ and /Sigma/ possess strangeness S = /minus/1 and isotopic spin I = 0, 1, respectively, while the /Xi/ has S = /minus/2, I = /1/2/. In the underlying quark picture, the /Lambda/ and /Sigma/ have ... continued below

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Pages: 22

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Millener, D.J. & Chrien, R.E. January 1, 1989.

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The study of hypernuclei affords unique insights into the nature of hadronic forces beyond those obtainable from ordinary nuclear physics research. A hypernucleus consists of one or more hyperons bound to a nuclear core. In the SU(3) classification, /Lambda/,/Sigma/, and /Xi/ hyperons occupy the same octet representation of spin-parity /1/2//sup +/ baryons as the neutron and proton, the familiar constituents of ordinary nuclei. The /Lambda/ and /Sigma/ possess strangeness S = /minus/1 and isotopic spin I = 0, 1, respectively, while the /Xi/ has S = /minus/2, I = /1/2/. In the underlying quark picture, the /Lambda/ and /Sigma/ have the flavor structure s(ud)/sub I=0, 1/, compared to the combination uud for the proton. The strange quark, s, carries the strangeness quantum number S = /minus/1, which makes it distinguishable from the S = 0 u and d quarks. The lowest-lying hyperon is the /Lambda/, with a mass of 1,115.6 MeV/c/sup 2/, some 177 MeV/c/sup 2/ heavier than the proton. The study of the behavior of a hyperon embedded in the nuclear medium, through the theoretical analysis of level spectra, sheds light on the nature of the hyperon-nucleon (YN) effective interaction, i.e. on the role of the strange quark in strong interactions. This paper investigates the (/pi//sup +/, K/sup +/) reactions that produce hypernuclei. 32 refs., 5 figs., 2 tabs.

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Pages: 22

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NTIS, PC A03/MF A01 - OSTI; 1.

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  • International meeting on physics at KAON, Bad Honnef, Germany, F.R., 7-9 Jun 1989

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  • Other: DE89016410
  • Report No.: BNL-42974
  • Report No.: CONF-8906194-1
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5918730
  • Archival Resource Key: ark:/67531/metadc1098864

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  • January 1, 1989

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  • Feb. 18, 2018, 3:59 p.m.

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  • April 24, 2018, 11:59 a.m.

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Millener, D.J. & Chrien, R.E. Hypernuclear physics with the (/pi//sup +/, K/sup +/) reaction, article, January 1, 1989; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1098864/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.