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A radius of a dense star on the color superconducting phase is investigatedin an extended NJL type model with two flavors of quarks. Since the model isnon-renormalizable, the results depend on the regularization procedure. Here weapply the dimensional regularization and evaluate the radius of a dense star.Evaluating the TOV equation, we show the relationship between mass and radiusof the dense star in the dimensional regularization.Comment: 4 pages.To appear in the proceedings of 7th Workshop on Quantum Field  Theory Under the Influence of External Conditions (QFEXT 05), Barcelona,  Catalonia, Spain, 5-9 Sep 2005. References are ad

Colour superconductivity and the radius of a quark star in the extended NJL model by using the dimensional regularization