论文标题
从LHC与爱丽丝的小型碰撞系统开放重型风味
Open heavy-flavour production from small to large collision systems with ALICE at the LHC
论文作者
论文摘要
重夸克是研究在超偏见的重离子碰撞中产生的夸克 - 胶子血浆（QGP）的特性的有效探针。在这一贡献中，将讨论有关在爱丽丝合作量测量的PP和PB-PB碰撞中开放重型风味生产的最新结果。 PB-PB碰撞中开放重型流风的测量值可以测试培养基中重夸克运输和能量损失的机制。此外，椭圆形的测量（$ v_ {2} $）和三角形（$ v_ {3} $）的流量颗粒的流量系数可让您深入了解重型夸克在培养基集体运动中的参与，在培养基的集体运动中，在其内部能量丧失和重新组合期间的长度依赖性。最后，开放的重型流动颗粒的定向流（$ v_ {1} $）对碰撞早期阶段存在前所未有的强磁场敏感，因此其电荷依赖性的测量是限制QGP的电导率的关键。在诸如PP之类的小型耐药系统中，开放的重型流动性生产为重型离子碰撞中热中效应的研究提供了基准，以及对扰动量子染色体计算的测试。
Heavy quarks are effective probes to study the properties of the quark-gluon plasma (QGP) produced in ultra-relativistic heavy-ion collisions. In this contribution, the latest results on open heavy-flavour production in pp and Pb-Pb collisions measured by the ALICE Collaboration will be discussed. Measurements of open heavy-flavour production in Pb-Pb collisions allow for testing the mechanisms of heavy-quark transport and energy loss in the medium. In addition, measurements of the elliptic ($v_{2}$) and triangular ($v_{3}$) flow coefficients of heavy-flavour particles give insights into the participation of heavy quarks in the collective motion of the medium, the path-length dependence of their in-medium energy loss, and recombination effects during the hadronisation. Finally, the directed flow ($v_{1}$) of open heavy-flavour particles is sensitive to the unprecedentedly strong magnetic fields present in the early stages of the collision, and so measurements of its charge dependence are key to constraining the electrical conductivity of the QGP. In small hadronic systems like pp, open heavy-flavour production provides the baseline for the investigation of hot-medium effects in heavy-ion collisions, as well as tests of perturbative quantum chromodynamic calculations.
