Can We Extract Lambda-Lambda Interaction from Two-Particle Momentum Correlation ?

Details Can We Extract Lambda-Lambda Interaction from Two-Particle Momentum Correlation ? Can We Extract Lambda-Lambda Interaction from Two-Particle Momentum Correlation ?

1999-03-09

arxiv.org/abs/nucl-th/9903021v1

Nucl.Phys. A670 (2000) 297-300

Physics

Nuclear Physics

Nuclear Theory

4 Pages, LaTeX with psfig, embedded 4 ps figures. Talk given at KEK-Tanashi Int. Symp. on "Physics of Hadrons and Nuclei", 14-

Scientific paper

10.1016/S0375-9474(00)00117-2

We analyze the invariant mass spectrum of Lambda-Lambda in $^{12}C(K^-,K^+ Lambda Lambda)$ reaction at P(K^+)=1.65 GeV/c by using a combined framework of IntraNuclear Cascade (INC) model and the correlation function technique. The observed enhancement at low-invariant masses can be well reproduced with attractive Lambda-Lambda interactions with the scattering length either in the range a = -6 \sim -4 fm (no bound state) or a = 7 \sim 12 fm (with bound state). We also discuss Lambda-Lambda correlation functions in central relativistic heavy-ion collisions as a possible way to eliminate this discrete ambiguity.

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