论文标题

将QCD校正重新校正,以在Z Pole的电子峰值碰撞中重夸克的前向噪声不对称:真的是一个问题吗?

Revisiting QCD corrections to the forward-backward charge asymmetry of heavy quarks in electron-positron collisions at the Z pole: really a problem?

论文作者

Maestre, Juan Alcaraz

论文摘要

我们详细介绍了QCD校正对$ \ Mathrm {e^+e^ - \ rightArrow q \ qu \ oftline {q}(g)} $进程的QCD校正对重夸克的测量。我们表明,通过使用简单的射流锁紧性切割,可以通过数量级减小这些校正的大小。预计在$δ\ mathrm {a_ {a_ {a_ {fb}^{0,q}} \大约10^{ - 4} $级别上,这种减少会导致系统的不确定性,以使高精度电动型电动测量的途径在未来的高光度$ \ mathrm $ \ mathrm andrive y Mathrm^e^e^e^+e^ - } $ collide中开放了高精度电动型的途径。

We review in some detail the QCD corrections to the measurement of the forward-backward charge asymmetry of heavy quarks in the $\mathrm{e^+e^-\rightarrow Q\overline{Q}(g)}$ process at the Z pole. We show that the size of these corrections can be reduced by an order of magnitude by using simple cuts on jet acollinearity. Such a reduction is expected to lead to systematic uncertainties at the $Δ\mathrm{A_{FB}^{0,Q}} \approx 10^{-4}$ level, opening up the path to high precision electroweak measurements with heavy flavors at future high luminosity $\mathrm{e^+e^-}$ colliders like the FCC-ee.

扫码加入交流群

加入微信交流群

微信交流群二维码

扫码加入学术交流群,获取更多资源