论文标题
在$ \ sqrt {s _ {\ rm nn}} = 8.16 $ tev的p-pb碰撞中的(抗)核生产的测量
Measurement of the production of (anti)nuclei in p-Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV
论文作者
论文摘要
Measurements of (anti)proton, (anti)deuteron, and (anti)$^3$He production in the rapidity range $-1<y< 0$ as a function of the transverse momentum and event multiplicity in p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\rm NN}} = 8.16$ TeV are presented.合并参数$ b_2 $和$ b_3 $,是根据每个核子的横向动量和平均带电的粒子多重密度的函数测量的,确认了从不同碰撞系统和能量中从低多样性到高多样性的平稳演变。 (抗)deuteron和(抗)$^3 $的产量与(抗)质子的比率也是平均带电粒子多重密度的函数。与规范统计模型相对于不同碰撞系统和质量中心能量的统计强化和合并模型的预测,对Deuteron与Proton的产量比的合并描述相对于规范统计模型,比较有利于合并描述。
Measurements of (anti)proton, (anti)deuteron, and (anti)$^3$He production in the rapidity range $-1<y< 0$ as a function of the transverse momentum and event multiplicity in p-Pb collisions at a center-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\rm NN}} = 8.16$ TeV are presented. The coalescence parameters $B_2$ and $B_3$, measured as a function of the transverse momentum per nucleon and of the mean charged-particle multiplicity density, confirm a smooth evolution from low to high multiplicity across different collision systems and energies. The ratios between (anti)deuteron and (anti)$^3$He yields and those of (anti)protons are also reported as a function of the mean charged-particle multiplicity density. A comparison with the predictions of the statistical hadronization and coalescence models for different collision systems and center-of-mass energies favors the coalescence description for the deuteron-to-proton yield ratio with respect to the canonical statistical model.