标题： π介子在LHC能量下的横向动量谱 显示英文标题

标题： Transverse Momentum Spectra of Pions at LHC Energies

摘要： 为了表征ALICE实验中测量的正π介子的横向动量谱，采用了两种热力学方法；一种基于非完美玻色-爱因斯坦气体的简并性，另一种则引入了{\it 临时的}有限的π介子化学势。 缺失的重子态和非化学平衡状态的引入极大地有助于对π介子产生的出色表征。 实验数据的出色再现可以理解为尚未被考虑的异常π介子生成的表现，这可能有助于解决在最高RHIC和LHC能量下长期存在的{\it 异常的}质子与π介子比率的争论。 显示英文摘要

摘要： In order to characterize the transverse momentum spectra of positive pions measured in the ALICE experiment, two thermal approaches are utilized; one is based on degeneracy of non-perfect Bose-Einstein gas and the other imposes an {\it ad-hoc} finite pion-chemical potential. The inclusion of missing haron states and the out-of-chemical equilibrium greatly contribute to the excellent characterization of pion production. The excellent reproduction of the experimental data can be understood as a manifestation of not-yet-regarded anomalous pion-production, which likely contribute to the long-standing debate on the {\it "anomalous"} proton-to-pion ratios at top RHIC and LHC energies.