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Spectroscopy of A hypernuclei in the (e,e'K(+)) reaction at Jefferson Lab

Author:
Baturin, Pavlo  


Journal:
HADRON 2009


Issue Date:
2010


Abstract(summary):

The coincidence experiment E01-011 (HKS), conducted in Hall Cat Jefferson Laboratory in fall 2005, represents a new generation of high resolution A hypemuclei spectroscopy experiments. It exploits the benefits of the associated electroproduction mechanism via the (e,e'K(+)) reaction. Compared with the widely studied meson-induced reactions, the higher quality quasi-continuous electron beam produces the potential for high resolution energy spectra. Further, it provides information complementary to meson-induced reactions: light neutron-rich and mirror hypemuclei, enhanced population of states accessible by spin-flip channels. The newly introduced tilt method of the electron spectrometer (ENGE) greatly reduced the rate of the background electrons due to Bremsstrahlung and Moller scattering. A brand new high resolution kaon spectrometer (HKS) together with a sophisticated detector package yielded excellent PID and momentum resolution. This resulted in quality missing mass spectra with energy resolution of approximately 400-500 keV (FWHM), an unprecedented value in hypernuclear reaction spectroscopy. The experiment measured the spectra of exotic neutron rich and mirror A hypernuclei (7)(Lambda) He, (12)(Lambda)B, Lambda(28)Al with high statistics.


Page:
720---724


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