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Title: High-Resolution Hypernuclear Spectroscopy Electron Scattering at Jlab, Hall A

Abstract

Hypernuclear spectroscopy via electromagnetic induced reactions is a valuable and powerful way to study hypernuclei, hadronic systems with non-zero strangeness content, providing an alternative to the hadron induced reactions mainly studied so far. Electron-induced hypernuclear spectroscopy has been studied in Hall A at Jefferson Lab on three nuclei, 12C, 16O, and 9Be with unprecedented resolution and with an improved particle identification system, using a RICH detector, in order to unambiguously identify kaons, thus allowing the measurement of high-quality, almost background-free, hypernuclear spectra. Two superconducting septum magnets were added to the existing apparatus in order to permit particle detection at very forward angle providing a reasonable counting rate. These studies have provided the first quantitative information on, for instance, core-excited states in hypernuclei. In the case of oxygen, a waterfall target has been employed allowing for the simultaneous measurement of hypernuclear production on oxygen and of elementary kaon-Lambda electro-production on protons: a crucial measurement to disentangle the contribution of the elementary reaction from the measured hypernuclear production cross section, yielding direct access to the nucleus-hypernucleus transition structure. Final results for 12C and 16O as well as preliminary results on 9Be will be presented.

Authors:
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1029203
Report Number(s):
JLAB-PHY-08-936; DOE/OR/23177-0812
TRN: US1105670
DOE Contract Number:  
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Conference: SENDAI 08, 15-18 Dec 2008, Sendai, Japan
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COUNTING RATES; CROSS SECTIONS; DETECTION; ELECTRONS; HADRONS; HYPERNUCLEI; KAONS; NUCLEI; OXYGEN; PARTICLE IDENTIFICATION; PRODUCTION; PROTONS; RESOLUTION; SCATTERING; SEPTUM MAGNETS; SPECTRA; SPECTROSCOPY; STRANGENESS; TARGETS

Citation Formats

Garibaldi, Franco. High-Resolution Hypernuclear Spectroscopy Electron Scattering at Jlab, Hall A. United States: N. p., 2010. Web. doi:10.1142/S0218301310016995.
Garibaldi, Franco. High-Resolution Hypernuclear Spectroscopy Electron Scattering at Jlab, Hall A. United States. https://doi.org/10.1142/S0218301310016995
Garibaldi, Franco. 2010. "High-Resolution Hypernuclear Spectroscopy Electron Scattering at Jlab, Hall A". United States. https://doi.org/10.1142/S0218301310016995.
@article{osti_1029203,
title = {High-Resolution Hypernuclear Spectroscopy Electron Scattering at Jlab, Hall A},
author = {Garibaldi, Franco},
abstractNote = {Hypernuclear spectroscopy via electromagnetic induced reactions is a valuable and powerful way to study hypernuclei, hadronic systems with non-zero strangeness content, providing an alternative to the hadron induced reactions mainly studied so far. Electron-induced hypernuclear spectroscopy has been studied in Hall A at Jefferson Lab on three nuclei, 12C, 16O, and 9Be with unprecedented resolution and with an improved particle identification system, using a RICH detector, in order to unambiguously identify kaons, thus allowing the measurement of high-quality, almost background-free, hypernuclear spectra. Two superconducting septum magnets were added to the existing apparatus in order to permit particle detection at very forward angle providing a reasonable counting rate. These studies have provided the first quantitative information on, for instance, core-excited states in hypernuclei. In the case of oxygen, a waterfall target has been employed allowing for the simultaneous measurement of hypernuclear production on oxygen and of elementary kaon-Lambda electro-production on protons: a crucial measurement to disentangle the contribution of the elementary reaction from the measured hypernuclear production cross section, yielding direct access to the nucleus-hypernucleus transition structure. Final results for 12C and 16O as well as preliminary results on 9Be will be presented.},
doi = {10.1142/S0218301310016995},
url = {https://www.osti.gov/biblio/1029203}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 2010},
month = {Wed Dec 01 00:00:00 EST 2010}
}

Conference:
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