论文标题
与新的低能和高能量数据面对矢量leptoquark假设
Confronting the vector leptoquark hypothesis with new low- and high-energy data
论文作者
论文摘要
鉴于新数据，我们提出了简化的$ U_1 $ -Leptoquark模型的更新现象学分析，该模型涉及带电的电流$ b $ -Meson异常。该分析表明，低能数据（由Lepton风味普遍性比率$ r_d $和$ r_ {d^*} $主导）与由$ pp \ toτ\barτ$ drell-drell-drell-drellyan数据所构成的高能量约束。我们还表明，目前的数据与一个框架兼容，在该框架中，与左手和右手第三代费米斯相似的leptoquark夫妇，从模型构建的角度来看，这种场景是在动机上激励的。我们发现，在LHC的高光度阶段，将在95％的置信水平上探测该设置的高能意义。
In light of new data we present an updated phenomenological analysis of the simplified $U_1$-leptoquark model addressing charged-current $B$-meson anomalies. The analysis shows a good compatibility of low-energy data (dominated by the lepton flavor universality ratios $R_D$ and $R_{D^*}$) with the high-energy constraints posed by $pp\to τ\barτ$ Drell-Yan data. We also show that present data are well compatible with a framework where the leptoquark couples with similar strength to both left- and right-handed third-generation fermions, a scenario that is well-motivated from a model building perspective. We find that the high-energy implications of this setup will be probed at the 95% confidence level in the high-luminosity phase of the LHC.
