论文标题
$ P $$+$$ P $,$ P $$+$ au,$ d $$+$ au和$^3 $+he $+$ au碰撞,$ \ sqrt {
Measurements of second-harmonic Fourier coefficients from azimuthal anisotropies in $p$$+$$p$, $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV
论文作者
论文摘要
Recently, the PHENIX Collaboration has published second- and third-harmonic Fourier coefficients $v_2$ and $v_3$ for midrapidity ($|η|<0.35$) charged hadrons in 0\%--5\% central $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions at $ \ sqrt {s _ {_ {_ {nn}}} = 200 $ gev利用三组两组相关性,用于两种具有不同伪行为的检测器组合[phys [phys]。修订版C {\ bf 105},024901(2022)]。本文以$ p $$+$ au,$ d $$+$ au和$^3 $ he $+$+$ au碰撞以及$ p $$+$ $ $ $ p $ collisisions的功能,将这些$ V_2 $的测量扩展到所有中心,$ p $$+$ au,$ d $$+$ au和$^3 $^3 $^$^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $^3 $+$+$ au,并且是横向动量($ p_t $)和事件倍增性。 $ v_2 $的运动学依赖性被量化为两个检测器组合之间的比率$ r $ $ v_2 $作为事件多重性的函数,$ 0.5 $$ $ $ <$$ p_t $ p_t $ <$ $ <$ $ <$ $ <$ $ <$ $ 2 $ $ <$ $ <$ $多相传输(AMPT)模型可以在大多数中央到中心$ d $$+$ au和$^3 $ he $+$ au碰撞中重现观察到的$ v_2 $。但是,AMPT模型系统地高估了$ P $$+$$ P $,$ P $$+$ au和外围$ d $$ d $$+au和$^3 $^3 $ he $+au碰撞的测量值,这表明在AMPT中的非流量贡献高于实验数据。 AMPT模型未能描述观察到的$ r $,价格为$ 0.5 $$ <$$ p_t $$ <$$ 1 $ gev/$ c $,但是与测量值达成了定性协议,价格为$ 2 $ $ <$$ p_t $ p_t $$ <$$ 2.5 $ gev/$ c $。
Recently, the PHENIX Collaboration has published second- and third-harmonic Fourier coefficients $v_2$ and $v_3$ for midrapidity ($|η|<0.35$) charged hadrons in 0\%--5\% central $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV utilizing three sets of two-particle correlations for two detector combinations with different pseudorapidity acceptance [Phys. Rev. C {\bf 105}, 024901 (2022)]. This paper extends these measurements of $v_2$ to all centralities in $p$$+$Au, $d$$+$Au, and $^3$He$+$Au collisions, as well as $p$$+$$p$ collisions, as a function of transverse momentum ($p_T$) and event multiplicity. The kinematic dependence of $v_2$ is quantified as the ratio $R$ of $v_2$ between the two detector combinations as a function of event multiplicity for $0.5$$<$$p_T$$<$$1$ and $2$$<$$p_T$$<$$2.5$ GeV/$c$. A multiphase-transport (AMPT) model can reproduce the observed $v_2$ in most-central to midcentral $d$$+$Au and $^3$He$+$Au collisions. However, the AMPT model systematically overestimates the measurements in $p$$+$$p$, $p$$+$Au, and peripheral $d$$+$Au and $^3$He$+$Au collisions, indicating a higher nonflow contribution in AMPT than in the experimental data. The AMPT model fails to describe the observed $R$ for $0.5$$<$$p_T$$<$$1$ GeV/$c$, but there is qualitative agreement with the measurements for $2$$<$$p_T$$<$$2.5$ GeV/$c$.