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تسجيل مستخدم جديدAzimuthal anisotropy measurements of strange and multistrange hadrons in U+U collisions at $sqrt{s_{NN}} = 193$ GeV at the BNL Relativistic Heavy Ion Collider
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We present systematic measurements of azimuthal anisotropy for strange and multistrange hadrons ($K^{0}_{s}$, $Lambda$, $Xi$, and $Omega$) and $phi$ mesons at midrapidity ($|y| <$ 1.0) in collisions of U + U nuclei at $sqrt{s_{NN}} = 193$ GeV, recorded by the STAR detector at the Relativistic Heavy Ion Collider. Transverse momentum ($p_{text{T}}$) dependence of flow coefficients ($v_{2}$, $v_{3}$, and $v_{4}$) 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 $v_{n}$ scaled by the participant eccentricity ($varepsilon_{n}leftlbrace 2 rightrbrace$) to explore system size dependence and collectivity in U + U collisions. The magnitude of $v_{2}/varepsilon_{2}$ 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 ($v_{3}/v_{2}^{3/2}$, $v_{4}/v_{2}^{4/2}$) are studied and compared with hydrodynamic and transport model calculations.
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