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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2104.01003hep-ph
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ILC上异常$τ\barτγ$耦合的模型无关研究

Model-independent study on the anomalous $τ\barτγ$ couplings at the ILC

M. Köksal

摘要:

过程$γγ\rightarrow τ\barτγ$的潜力进行了检查,在一个模型无关的方式使用有效的拉格朗日方法的ILC设计与标准配置的0.25 TeV/2000 fb $^{-1}$,0.35 TeV/200 fb $^{-1}$和0.5 TeV/4000 fb $^{-1}$。在$95\%$置信水平和$δ_{sys}=0,5,10 \%$的系统不确定度下,定义异常$τ\barτγ$耦合的$\tilde{a}_τ$和$\tilde{{d}_τ}$参数的极限与实验结果进行了比较。在不存在系统误差的情况下,获得的最佳极限分别为$-0.00082<\tilde{a}_τ<0.00050$和$|\tilde{{d}_τ}|<3.5969 \times 10^{-18}$ $e\,cm$。因此,我们的研究结果表明,$γγ$碰撞在ILC导致一个显着的改善,在现有的实验限制的异常磁和电的τ轻子的偶极矩。

英文摘要:

The potential of the process $γγ\rightarrow τ\barτγ$ is examined in a model-independent way using the effective Lagrangian approach for the ILC which is designed with standard configurations of 0.25 TeV/2000 fb$^{-1}$, 0.35 TeV/200 fb$^{-1}$ and 0.5 TeV/4000 fb$^{-1}$. The limits obtained for $\tilde{a}_τ$ and $\tilde{{d}_τ}$ parameters defining the anomalous $τ\barτγ$ couplings at $95\%$ confidence level and systematic uncertainties of $δ_{sys}=0,5,10 \%$ are compared with the experimental results. The best limits obtained without systematic error on the anomalous couplings are $-0.00082<\tilde{a}_τ<0.00050$ and $|\tilde{{d}_τ}|<3.5969 \times 10^{-18}$ $e\,cm$, respectively. Thus, our results show that $γγ$ collisions at the ILC lead to a remarkable improvement in the existing experimental limits on the anomalous magnetic and electric dipole moments of the tau lepton.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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