학술논문
K*0 production in Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV from the RHIC beam energy scan
Document Type
article
Author
Abdallah, MS; Aboona, BE; Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Anderson, DM; Aschenauer, EC; Atchison, J; Bairathi, V; Baker, W; Cap, JG Ball; Barish, K; Bellwied, R; Bhagat, P; Bhasin, A; Bhatta, S; Bielcik, J; Bielcikova, J; Brandenburg, JD; Cai, XZ; Caines, H; de la Barca Sánchez, M Calderón; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, Z; Chatterjee, A; Chen, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Cheng, Y; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanád, M; Dale-Gau, G; Daugherity, M; Deppner, IM; Dhamija, A; Di Carlo, L; Didenko, L; Dixit, P; Dong, X; Drachenberg, JL; Duckworth, E; Dunlop, JC; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fawzi, FM; Fazio, S; Feng, CJ; Feng, Y; Finch, E; Fisyak, Y; Fu, C; Gagliardi, CA; Galatyuk, T; Geurts, F; Ghimire, N; Gibson, A; Gopal, K; Gou, X; Grosnick, D; Gupta, A; Guryn, W; Hamed, A; Han, Y; Harabasz, S; Harasty, MD; Harris, JW; Harrison, H; He, S; He, W; He, XH; He, Y; Heppelmann, S; Herrmann, N; Hoffman, E; Holub, L; Hu, C; Hu, Q; Hu, Y; Huang, H; Huang, HZ; Huang, SL; Huang, T
Source
Physical Review C. 107(3)
Subject
Language
Abstract
We report the measurement of K∗0 meson at midrapidity (|y|< 1.0) in Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV collected by the STAR experiment during the Relativistic Heavy Ion Collider (RHIC) beam energy scan program. The transverse momentum spectra, yield, and average transverse momentum of K∗0 are presented as functions of collision centrality and beam energy. The K∗0/K yield ratios are presented for different collision centrality intervals and beam energies. The K∗0/K ratio in heavy-ion collisions are observed to be smaller than that in small-system collisions (e+e and p+p). The K∗0/K ratio follows a similar centrality dependence to that observed in previous RHIC and Large Hadron Collider measurements. The data favor the scenario of the dominance of hadronic rescattering over regeneration for K∗0 production in the hadronic phase of the medium.