engleski

Binding Energy of 7ΛHe and Test of Charge Symmetry Breaking in the ΛN Interaction Potential

The binding energy of 7ΛHe has been obtained for the first time with reaction spectroscopy using the (e, e'K+) reaction at Jefferson Lab's Hall C. A comparison among the binding energies of the A = 7 T = l iso-triplet hypernuclei, 7ΛHe, 7ΛLi*and 7ΛBe, is made and possible charge symmetry breaking (CSB) in the ΛN potential is discussed. For 7ΛHe and 7ΛBe, the shifts in binding energies are opposite to those predicted by a recent cluster model calculation, which assumes that the unexplained part of the binding energy difference between 4ΛH and 4ΛHe, is due to the CSB of the ΛN potential. Further examination of CSB in light hypernuclear systems is required both experimentally and theoretically.

hypernuclear; electroproduction; kaon spectrometer; electron spectrometer; charge symmetry

Rad je prezentiran na skupu International Nuclear Physics Conference 2010 (INPC2010), održanom od 04.–09.07.2010., Vancouver, Canada.