# K*0 production in Cu+Cu and Au+Au collisions at \sqrt{s_NN} = 62.4 GeV and 200 GeV

Abstract : We report on K*0 production at mid-rapidity in Au+Au and Cu+Cu collisions at \sqrt{s_{NN}} = 62.4 and 200 GeV collected by the Solenoid Tracker at RHIC (STAR) detector. The K*0 is reconstructed via the hadronic decays K*0 \to K+ pi- and \bar{K*0} \to K-pi+. Transverse momentum, pT, spectra are measured over a range of pT extending from 0.2 GeV/c to 5 GeV/c. The center of mass energy and system size dependence of the rapidity density, dN/dy, and the average transverse momentum, , are presented. The measured N(K*0)/N(K) and N(\phi)/N(K*0) ratios favor the dominance of re-scattering of decay daughters of K*0 over the hadronic regeneration for the K*0 production. In the intermediate pT region (2.0 < pT < 4.0 GeV/c), the elliptic flow parameter, v2, and the nuclear modification factor, RCP, agree with the expectations from the quark coalescence model of particle production.
Type de document :
Article dans une revue
Physical Review C, American Physical Society, 2011, 84, pp.034909. <10.1103/PhysRevC.84.034909>
Domaine :

http://hal.in2p3.fr/in2p3-00491730
Contributeur : Dominique Girod <>
Soumis le : lundi 14 juin 2010 - 11:03:13
Dernière modification le : mercredi 27 juillet 2016 - 14:48:48

### Citation

M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, et al.. K*0 production in Cu+Cu and Au+Au collisions at \sqrt{s_NN} = 62.4 GeV and 200 GeV. Physical Review C, American Physical Society, 2011, 84, pp.034909. <10.1103/PhysRevC.84.034909>. <in2p3-00491730>

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