Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session DE: Mini-symposium on Strangeness Nuclear Physics Today and Tomorrow II
9:00 AM–11:30 AM,
Thursday, October 25, 2018
Hilton
Room: King's 1
Chair: Hirokazu Tamura, Tohoku University
Abstract ID: BAPS.2018.HAW.DE.9
Abstract: DE.00009 : On mass polarization and exchange effects in nuclear three-body systems*
11:00 AM–11:15 AM
Presenter:
Roman Ya Kezerashvili
(City Tech, City University of New York)
Authors:
Roman Ya Kezerashvili
(City Tech, City University of New York)
Igor Filikhine
(North Carolina Central University)
Branislav Vlahovic
(North Carolina Central University)
Using the method of Faddeev equations in configuration space the mass polarization effect is considered for three-body systems with two identical particles: AAB. We present three-body calculations for the 3H nucleus, the double-Λ(Ξ) hypernuclei, and kaonic clusters pK-K- and ppK-. We show that competition between the mass polarization contribution to the kinetic energy and the term related to the exchange of identical particles leads to two opposite relations between B3(VAA=0) and 2B2, where B3(VAA=0) is the three-body energy of a system, when the interaction between identical particles is omitted, 2B2 is the binding energy of AB subsystem. The mass ratio mA/mB affects the mass polarization contribution and AB potential strength affects the exchange term directly. The latter also depends on the Clebsch–Gordan coefficients of spin/isospin state of the system. For bosonic-like systems B3(VAA=0)>2B2, for systems complicated by spin/isospin dependence, the relation B3(VAA=0)<2B2 is satisfied for the wide range of mass ratio. The last relation allows us to estimate the quasi-bound state energy of three-body kaonic clusters. The effect of variation of AB potential strength for hypernuclear and kaonic systems is studied.
*The work is supported by the NSF grant HRD-1345219.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.DE.9
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