The Effect of Broken Scale Invariance on Unparticle Physics

• Main Authors: LIU YIFENG, 劉逸烽
• Other Authors: Chia-Hung Chang
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/9xjcj5

碩士 === 國立臺灣師範大學 === 物理學系 === 96 === We study the muon pair production in electron-positron collision in the presence of an unparticle with a low energy scale invariance breaking. The breaking, possibly due to Higgs VEV, generates a mass gap μ in the unparticle continuous mass spectrum. This effect is incorporated into the unparticle propagator in a way that renders smooth transition to a massive particle propagator as unparticle dimension approach one. We concentrate especially in the most likely case μ ≈ MZ and Z μ > M and discuss in muon pair production how to distinguish the original unparticle and the unparticle with mass gap μ.