不同介质质量玻色子和反玻色子的压缩谱
Squeezed spectra of bosons and antibosons with different in-medium masses
摘要：
研究了介质中玻色子和反玻色子的质量差对它们光谱的影响。介质中质量的差异可能导致玻色子和反玻色子的横向动量谱之间的差异。这种效应随着玻色子和反玻色子之间的介质质量差的增加而增加。在大横质量区（mT > 1：6GeV），玻色子和反玻色子的横动量谱差随源的膨胀速度增大而增大，随横动量的增大而减小。随着介质温度的升高，强子与介质之间的相互作用增强，冻结温度越高，玻色子与反玻色子之间的质量差越大，冻结温度越高，玻色子与反玻色子之间的横动量谱也越大.
英文摘要：
We study the influence of the in-medium mass difference between boson and antiboson on their spectra. The in-medium mass difference may lead to a difference between the transverse momentum spectra of boson and antiboson. This effect increases with the increasing in-medium mass difference between boson and antiboson. The difference between the transverse momentum spectra of boson and antiboson increases with the increasing expanding velocity of the source and decreases with the increasing transverse momentum in large transverse mass region (mT > 1:6 GeV). The interactions between the hadron and the medium may increase with the increasing temperature of the medium and the higher freeze-out temperature may lead to a larger mass difference between boson and antiboson, and may give rise to a larger difference between the transverse momentum spectra of boson and antiboson for higher freeze-out temperature.
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