TY - JOUR
T1 - Λ hypernuclei
T2 - Overview and single-particle nature
AU - Gal, A.
PY - 1989/7
Y1 - 1989/7
N2 - A brief overview of S=−1 hypernuclei is presented, followed for the main course by a careful, judicious construction of a density-dependent nonlocal Λ-nucleus potential due to Millener, Dover and Gal. The recent Λ level-spectra information obtained from the (π+, K+) experiment at Brookhaven has been combined with that earlier derived from (K−, π−) reactions in order to determine three parameters which are needed to give a good account of the data and which turn out rather tightly constrained. The analysis yields DΛ=(28.0±0.5) MeV for the Λ-nuclear well depth and m*/m=0.78±0.02 for the ratio of Λ effective mass to its free mass. No explicit quark signature, e.g., s-quark partial deconfinement, is found to be necessitated by fitting to these data.
AB - A brief overview of S=−1 hypernuclei is presented, followed for the main course by a careful, judicious construction of a density-dependent nonlocal Λ-nucleus potential due to Millener, Dover and Gal. The recent Λ level-spectra information obtained from the (π+, K+) experiment at Brookhaven has been combined with that earlier derived from (K−, π−) reactions in order to determine three parameters which are needed to give a good account of the data and which turn out rather tightly constrained. The analysis yields DΛ=(28.0±0.5) MeV for the Λ-nuclear well depth and m*/m=0.78±0.02 for the ratio of Λ effective mass to its free mass. No explicit quark signature, e.g., s-quark partial deconfinement, is found to be necessitated by fitting to these data.
KW - 21.80 - Hypernuclei
UR - http://www.scopus.com/inward/record.url?scp=51249172904&partnerID=8YFLogxK
U2 - 10.1007/BF02735114
DO - 10.1007/BF02735114
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AN - SCOPUS:51249172904
SN - 0369-3546
VL - 102
SP - 293
EP - 306
JO - La Rivista del Nuovo Cimento
JF - La Rivista del Nuovo Cimento
IS - 1
ER -