首页 | 本学科首页   官方微博 | 高级检索  
     检索      


The impact of chirally odd condensates on the rho meson
Authors:T Hilger  R Thomas  B Kämpfer  S Leupold
Institution:1. Forschungszentrum Dresden-Rossendorf, PF 510119, D-01314 Dresden, Germany;2. TU Dresden, Institut für Theoretische Physik, 01062 Dresden, Germany;3. Institutionen för fysik och astronomi, Uppsala Universitet, Sweden
Abstract:Based on QCD sum rules we explore the consequences of a scenario for the ρ meson, where the chiral symmetry breaking condensates are set to zero whereas the chirally symmetric condensates remain at their vacuum values. This clean-cut scenario causes a lowering of the ρ spectral moment by about 120 MeV. The complementarity of mass shift and broadening is discussed. A simple parametrization of the ρ spectral function leads to a width of about 280 MeV if no shift of the peak position is assumed.
Keywords:Hadron properties  QCD sum rules  Chiral symmetry  Chiral restoration
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号