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( F.Cusanno , M.Iodice et al , Phys . Rev. Lett.103 202501 (2009).

High Resolution Hypernuclear Spectroscopy at Jefferson Lab Hall A. ( M. Iodice , F.Cusanno et al. Phys.Rev.Lett. 99,052501 (2007). 12 C ( e,e’ K ) 12 B L. 670 keV FWHM. ( F.Cusanno , M.Iodice et al , Phys . Rev. Lett.103 202501 (2009).

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( F.Cusanno , M.Iodice et al , Phys . Rev. Lett.103 202501 (2009).

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  1. High ResolutionHypernuclearSpectroscopy at Jefferson Lab Hall A (M. Iodice,F.Cusannoet al. Phys.Rev.Lett. 99,052501 (2007) 12C(e,e’K)12BL 670 keVFWHM (F.Cusanno, M.Iodiceet al,Phys. Rev. Lett.103 202501 (2009). (G. M. Urciuoli, F. Cusanno, S. Marrone et to be sumbitted to PhysRevC 16O(e,e’K)16NL 12C(e,e’K+)9ΛLi

  2. Future Project: Super Hypernuclear Physics at JlabA Study with High Precision on the Electro-production of the  and -Hypernuclei in the Full Mass Range Enge () Unified collaboration from the previous Hall A and C collaborations HRS (e’) Septum Combine the features of previous Hall A and C experiments, create an optimized future program w/ the CEBAF CW beam HKS (K) HES () Septum HRS – HKS: (e, e’K+) experiments for mass spectroscopy HKS – Enge or HKS – HES: New decay -spectroscopy experiment

  3. e,e’ reaction spectroscopy • 1.Elementary L, S0 • Reliable data from1H(e,e’K+)L,S0 at low Q2 • Dynamis, f.f.,… 2.Few-body 2D(e,e’K+)[LN] - Exotic bound state, LN interaction 4He(e,e’K+)4LH - LN, Charge Symmetry Breaking( CSB) 3.Medium-heavy 40,44,48Ca(e,e’K+)40,44,48LK 27Al(e,e’K+)27LMg 48Ti(e,e’K+)48LSc • LN, L’sS.E., iso-spin, A dependence of BL • Mean field approximation • Single particle nature of L • Tri-axial deformation • ,Level inversion due to L • 4. Heavy • 208Pb(e,e’K+) 208LTlL in heaviest nucleus • LN, A dependenceof BL • Meanfieldapproximation • Single particle nature ofL • The roleofthree body forces • Neuronstarsstructure and dynamics

  4. Decay Pion Spectroscopy to Study -Hypernuclei Direct Production Fragmentation Process e’ Example: e’ K+ K+ 12C e 12C * e * p  Fragmentation (<10-16s) s  12B* E.M. p 12Bg.s. Low lying Hypernuclear States 4H Highly Excited Hypernuclear States  4Hg.s.   12C  -  4He  - Weak mesonictwo body decay (~10-10s) 

  5. Hall A deector setup RICH Detector hadron arm septum magnets electron arm aerogel first generation aerogel second generation To be added to do the experiment

  6. BNL 3 MeV KEK336 2 MeV Improving energy resolution ~ 1.5 MeV 670 KeV 635 KeV hadron probe vs e.m. probe - Energy resolution - Spinflip and using electromagnetic probe High resolution, high yield, and systematic study is essential

  7. A = 40 A ~ 50 P.H.Pile et al. PRL 66 (1991) 2585 H.Hotchi et al. PRC 64 (2001)044302 51LV 40Ca = (Z=20, N=20) : 40LK = one proton hole + L

  8. TheWATERFALLtarget: reactions on 16O and 1H nuclei H2O “foil” Be windows H2O “foil”

  9. Results on the WATERFALLtarget - 16O and 1H 1H(e,e’K)L 1H(e,e’K)L,S L Energy Calibration Run S 16O(e,e’K)16NL • Water thickness from elastic cross section on H • Precise determination of the particle momenta and beam energy • using the Land Speakreconstruction (energy scale calibration)

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