Hypernuclear physics with the (π⁺, K⁺) reaction [electronic resource]
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, Λ,Σ, and Ξ hyperons occupy the same octet represen...
Saved in:
| Online Access: |
Online Access |
|---|---|
| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Upton, N.Y. : Oak Ridge, Tenn. :
Brookhaven National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1989.
|
| Subjects: |
| Summary: | 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, Λ,Σ, and Ξ hyperons occupy the same octet representation of spin-parity /1/2/⁺ baryons as the neutron and proton, the familiar constituents of ordinary nuclei. The Λ and Σ possess strangeness S = −1 and isotopic spin I = 0, 1, respectively, while the /Xi/ has S = /minus/2, I = /1/2/. In the underlying quark picture, the Λ 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/c², some 177 MeV/c² 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 (π⁺, K/sup +/) reactions that produce hypernuclei. 32 refs., 5 figs., 2 tabs. |
|---|---|
| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 01/01/1989. "bnl-42974" " conf-8906194-1" "DE89016410" International meeting on physics at KAON, Bad Honnef, Germany, F.R., 7-9 Jun 1989. Chrien, R.E.; Millener, D.J. |
| Physical Description: | Pages: 22 : digital, PDF file. |