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Azimuthal anisotropy measurements of strange and multistrange hadrons in U+U collisions at sNN=193 GeV at the BNL Relativistic Heavy Ion Collider
- Abdallah, MS;
- Adam, J;
- Adamczyk, L;
- Adams, JR;
- Adkins, JK;
- Agakishiev, G;
- Aggarwal, I;
- Aggarwal, MM;
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- Alekseev, I;
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- Brandenburg, JD;
- Brandin, AV;
- Bunzarov, I;
- Butterworth, J;
- Cai, XZ;
- Caines, H;
- de la Barca Sánchez, M Calderón;
- Cebra, D;
- Chakaberia, I;
- Chaloupka, P;
- Chan, BK;
- Chang, F-H;
- Chang, Z;
- Chankova-Bunzarova, N;
- Chatterjee, A;
- Chattopadhyay, S;
- Chen, D;
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- Nasim;
- Nayak, K;
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- Nemes, DB;
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- Nigmatkulov, G;
- Niida, T;
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- Nonaka, T;
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- Odyniec, G;
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- Okorokov, VA;
- Page, BS;
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- Parfenov, P;
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- Pawlowska, D;
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- Trentalange, S;
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- Ullrich, T;
- Underwood, DG;
- Upsal, I;
- Van Buren, G;
- Vanek, J;
- Vasiliev, AN;
- Vassiliev, I;
- Verkest, V;
- Videbæk, F;
- Vokal, S;
- Voloshin, SA;
- Wang, F;
- Wang, G;
- Wang, JS;
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- Webb, JC;
- Weidenkaff, PC;
- Wen, L;
- Westfall, GD;
- Wieman, H;
- Wissink, SW;
- Witt, R;
- Wu, J;
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- Xie, G;
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- Zhang, Z;
- Zhao, J;
- Zhou, C;
- Zhu, X;
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- Zurek, M;
- Zyzak, M
- et al.
Published Web Location
https://doi.org/10.1103/physrevc.103.064907Abstract
We present systematic measurements of azimuthal anisotropy for strange and multistrange hadrons (Ks0, Λ, Ξ, and ω) and φ mesons at midrapidity (|y|< 1.0) in collisions of U+U nuclei at sNN=193 GeV, recorded by the STAR detector at the Relativistic Heavy Ion Collider. Transverse momentum (pT) dependence of flow coefficients (v2, v3, and v4) is presented for minimum bias collisions and three different centrality intervals. Number of constituent quark scaling of the measured flow coefficients in U+U collisions is discussed. We also present the ratio of vn scaled by the participant eccentricity (ɛn2) to explore system size dependence and collectivity in U+U collisions. The magnitude of v2/ɛ2 is found to be smaller in U+U collisions than that in central Au+Au collisions contradicting naive eccentricity scaling. Furthermore, the ratios between various flow harmonics (v3/v23/2, v4/v24/2) are studied and compared with hydrodynamic and transport model calculations.
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