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First experiment on spectroscopy of Lambda-hypernuclei by electroproduction at JLab

AIP Conf. Proc. -- December 15, 2001 -- Volume 603, pp. 173-185
MESONS AND LIGHT NUCLEI: 8th Conference; doi:10.1063/1.1436599

Issue Date: 15 December 2001

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L. Tang,1,10 T. Miyoshi,2 M. Sarsour,3 L. Yuan,1 X. Zhu,1 A. Ahmidouch,4 P. Ambrozewicz,5 D. Androic,6 T. Angelescu,7 R. Asaturyan,8 S. Avery,1 O. K. Baker,1 I. Bertovic,6 H. Breuer,9 R. Carlini,10 J. Cha,1 R. Chrien,11 M. Christy,1 L. Cole,1 S. Danagoulian,4 D. Dehnhard,12 M. Elaasar,13 A. Empl,14 R. Ent,10 H. Fenker,10 Y. Fujii,2 M. Furic,6 L. Gan,1 K. Garrow,10 A. Gasparian,1 P. Gueye,1 M. Harvey,1 O. Hashimoto,2 W. Hinton,1 B. Hu,1 E. Hungerford,3 C. Jackson,1 K. Johnston,15 H. Juengst,12 C. Keppel,1 K. Lan,3 Y. Liang,1 V. P. Likhachev,16 J. H. Liu,12 D. Mack,10 K. Maeda,2 A. Margaryan,8 P. Markowitz,17 J. Martoff,5 H. Mkrtchyan,8 T. Petkovic,6 J. Reinhold,17 J. Roche,18 Y. Sato,1,2 R. Sawafta,4 N. Simicevic,15 G. Smith,10 S. Stepanyan,8 V. Tadevosyan,8 T. Takahashi,2 H. Tamura,2 K. Tanida,19 M. Ukai,2 A. Uzzle,1 W. Vulcan,10 S. Wells,15 S. Wood,10 G. Xu,3 Y. Yamaguchi,2 and C. Yan10
1Department of Physics, Hampton University, Hampton, Virginia 23668
2Department of Physics, Tohoku University, Sendai 980-8578, Japan
3Department of Physics, University of Houston, Houston, Texas 77204
4Department of Physics, North Carolina A&T State University, Greensboro, North Carolina 27411
5Department of Physics, Temple University, Philadelphia, Pennsylvania 19122
6University of Zagreb, Zagreb, Croatia
7University of Bucharest, Bucharest, Romania
8Yerevan Physics Institute, Yerevan, Armenia
9Department of Physics, University of Maryland, College Park, Maryland 20742
10Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606
11Brookhaven National Laboratory, Upton, New York 11973
12Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455
13Department of Physics, Southern University at New Orleans, New Orleans, Louisiana 70126
14Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12180
15Department of Physics, Louisiana Tech University, Ruston, Louisiana 71272
16Institute of Physics, University of Sao Paulo, Sao Paulo, Brazil
17Department of Physics, Florida International University, Miami, Florida 27411
18Department of Physics, College of William and Mary, Williamsburg, Virginia 23187
19Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
The first experiment in Lambda-hypernuclear spectroscopy using the high-precision electron beam at Jefferson laboratory (JLab) has been carried out. The hypernuclear spectrometer system (HNSS) was used to measure spectra from the 12C(e,e[prime]K+)12LambdaB reaction with sub-1-MeV resolution, the best energy resolution obtained thus far in hypernuclear spectroscopy with magnetic spectrometers. This paper describes the HNSS and the preliminary results for the 12LambdaB system. The experimental spectrum is consistent with the expected strong spin-flip excitations of unnatural parity states. A program of hypernuclear physics experiments is planned for the future with much higher yield and even better energy resolution. ©2001 American Institute of Physics.
Permalink: http://link.aip.org/link/?APCPCS/603/173/1
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KEYWORDS and PACS

Keywords
PACS
  • 21.80.+a
    Nuclear structure Hypernuclei
  • 25.30.Rw
    Nuclear reactions: specific reactions Lepton-induced reactions Electroproduction reactions
  • YEAR: 2001

PUBLICATION DATA

ISSN:
0094-243X (print)  
Publisher:
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