论文标题
相对论重离子碰撞中不稳定核的喂养贡献
Feeddown contributions from unstable nuclei in relativistic heavy-ion collisions
论文作者
论文摘要
我们从衰减$ a = 4 $和$ a = 5 $ a = 5 $ nuclei估计喂食贡献到质子，迪特龙，triton，$^3 $ he的最终产量，以及他在相对论的重型离子碰撞中以$ \ sqrt {s _ {s _ {\ rm nn nn} $ 2.4 $ 2.4 $ nn and的相对性重型离子碰撞产生的$^4 $。由于涉及的较大的惩罚因素，LHC和最高RHIC能量的喂食贡献效应不超过5％，但在中间碰撞能量方面很大。我们观察到Tritons的大量喂食，$^3 $ HE和$^4 $ He at $ \ sqrt {S _ {\ rm nn}}} \ Lessim 10 $ GEV，在其中考虑了碰撞能量的下端，它们可能占最终产量的70％。在$ \ sqrt {s _ {\ rm nn}}} \ Lessim 4 $ GEV时，观察到Deuteron收益率的可观（$> 10 $％）的效果。结果表明，在中间碰撞能量的光核产生的持续和未来分析中，激发核的进食不可忽视，包括在Fair上进行的HADES和CBM实验，Jinr的NICA，Jinr的NICA，Rhic Beam Energy-Energy-Energy-Toerm扫描和固定目标程序，以及Cern的NA61/Shine。我们进一步表明，$ t $ - $μ_b$平面本身的冻结曲线受到高bary化学潜力的光核的影响很大。
We estimate the feeddown contributions from decays of unstable $A = 4$ and $A = 5$ nuclei to the final yields of protons, deuterons, tritons, $^3$He, and $^4$He produced in relativistic heavy-ion collisions at $\sqrt{s_{\rm NN}} > 2.4$ GeV, using the statistical model. The feeddown contribution effects do not exceed 5% at LHC and top RHIC energies due to the large penalty factors involved, but are substantial at intermediate collision energies. We observe large feeddown contributions for tritons, $^3$He, and $^4$He at $\sqrt{s_{\rm NN}} \lesssim 10$ GeV, where they may account for as much as 70% of the final yield at the lower end of the collision energies considered. Sizable ($>10$%) effects for deuteron yields are observed at $\sqrt{s_{\rm NN}} \lesssim 4$ GeV. The results suggest that the excited nuclei feeddown cannot be neglected in the ongoing and future analysis of light nuclei production at intermediate collision energies, including HADES and CBM experiments at FAIR, NICA at JINR, RHIC beam energy scan and fixed-target programmes, and NA61/SHINE at CERN. We further show that the freeze-out curve in the $T$-$μ_B$ plane itself is affected significantly by the light nuclei at high baryochemical potential.
