论文标题
Bhabha散射量规统一
Bhabha scattering in the gauge-Higgs unification
论文作者
论文摘要
我们在$ \ Mathrm {e}^{+}^{+Mathrm {e}^{ - } \ to \ Mathrm {e}^{e}^{+}^{+Mathrm {e}^{e}^ - { - {e}^$ bhabha sctersings中检查了$ z'u $ bosons在量规格的统一（GHU）模型中的效果。我们评估了Bhabha散射中的微分横截面，包括两种类型的$ \ Mathrm {so}（5）（5）\ Times \ Mathrm {U}（1）\ Times \ Times \ Mathrm {Surm {Surm {Surm {Su}（3）$ GHU模型。我们发现，在$ \ sqrt {s} = 250 \，\ mathrm {gev} $上可以看到GHU模型中差分横截面与SM中的差异偏差的偏差。带有$ 80 \％$ - 纵向两极分化的电子和$ 30 \％$ - 纵向两极化的正电子梁，GHU A-和B模型中的左右不右偏光均以$ 3 \ $ 3 \，以$ 3 \，$ 3 \，$ l _ {\ rm int} = 250 \，\ n Mathrmmmorties。我们还表明，散射角度小于100 mrad的Bhabha散射可以安全地用作$ \ Mathrm {e}^{+} \ Mathrm {e}^{ - } $ colliders中的光度测量值，因为$ z'$ boson的效果对小散射角度很好地抑制了。我们提出了一个新的可观察的可观察，可以在未来的TEV-scale $ \ mathrm {e}^{+} \ Mathrm {e}^{ - } $线性胶合器中测量。
We examine effects of $Z'$ bosons in gauge-Higgs unification (GHU) models at $\mathrm{e}^{+}\mathrm{e}^{-}\to \mathrm{e}^{+}\mathrm{e}^{-}$ Bhabha scatterings. We evaluate differential cross sections in Bhabha scatterings including $Z'$ bosons in two types of $\mathrm{SO}(5) \times \mathrm{U}(1) \times \mathrm{SU}(3)$ GHU models. We find that deviations of differential cross sections in the GHU models from those in the SM can be seen at $\sqrt{s} = 250\,\mathrm{GeV}$. With $80\%$-longitudinally polarized electron and $30\%$-longitudinally polarized positron beams, the left-right asymmetries in the GHU A- and B-models are resolved at more than $3\,σ$ at $L_{\rm int} =250\,\mathrm{fb}^{-1}$. We also show that Bhabha scattering with scattering angle less than 100 mrad can be safely used as luminosity measurements in $\mathrm{e}^{+}\mathrm{e}^{-}$ colliders since the effects of $Z'$ bosons are well suppressed for small scattering angle. We propose a new observable which can be measured at future TeV-scale $\mathrm{e}^{+} \mathrm{e}^{-}$ linear colliders.
