OGTC模型中PGBs对γγ→b过程的Yukawa修正  

Yukawa Corrections from PGBs in OGTC Model to the Process γγ→b

作　　者：黄金书[1] 宋太平[1] 宋海珍[1] 鲁公儒[2] 

机构地区：[1]河南南阳师范学院物理系,南阳473061 [2]河南师范大学物理系,新乡453002

出　　处：《高能物理与核物理》2000年第10期901-907,共7页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金;河南省教委自然科学基金等资助&&

摘　　要：计算了一代人工色 (OneGenerationTechnicolor,简称OGTC)模型中的赝标哥尔斯通玻色子 (Pseudo GoldstoneBosons,简称PGBs)对γγ→b b过程的Yukawa修正 .发现在一定的参数范围内 ,PGBs对γγ→b b散射截面的修正超过1 0 % ;而PGBs对过程e+e- →γγ→b b的相对修正 ,在laserback scatteringpho tons模式下最大可达 -51 % ,在beamstrahlung photons模式下最大只有-1 7 9% ;这些修正比标准模型和超对称模型下相应粒子的贡献大许多 ,将为在下一代高能光子碰撞实验上寻找人工色理论的信息提供参考 .The Yukawa corrections from the pseudo Goldstone bosons (PGBs) in the one generation technicolor (OGTC) model to the process γγ→b are calculated. We find the corrections from the PGBs to the cross section γγ→b are more than 10% in the certain parameter values region. The maximum of the relative corrections to the process e +e -→γγ→b may reach -51% in laser back scattering photos mode,and is only -17.9% in beamstrahlung photons mode. The corrections are greatly larger the contributions from the relevant particles in the standard model and the supersymmetric model. It can be considered as a signatures of finding the technicolor at the next generation high energy photons collision.

关 键 词：一代人工色模型 YUKAVA修正 PGBS 

分 类 号：O572[理学—粒子物理与原子核物理]