论文标题
魅力物理面对高 - $ P_T $ Lepton Tails
Charm Physics Confronts High-$p_T$ Lepton Tails
论文作者
论文摘要
我们介绍了（半松弛和中性电流的魅力梅森衰变（半松弛和中性电流）中可能短途新物理效应的系统调查。使用标准模型有效场理论（SMEFT）来分析低能量和高能量的最相关的实验数据，我们证明了魅力衰减与LHC处高不变的大量Lepton尾巴之间的惊人互补性。有趣的是，高-P_T $ DRELL-YAN数据在大多数新物理场景上提供竞争性限制。此外，考虑了$ s $ su（2）_l $量规不变性施加的$ k $，$π$和$τ$衰减的完整相关约束。 $ d _ {（s）} $衰减的界限，高 - $ P_T $ Lepton Tails和$ SU（2）_l $关系图表Smeft的空间影响了半（Leptonic）魅力味道转换。
We present a systematic survey of possible short-distance new-physics effects in (semi)leptonic charged- and neutral-current charmed meson decays. Using the Standard Model Effective Field Theory (SMEFT) to analyze the most relevant experimental data at low and high energies, we demonstrate a striking complementarity between charm decays and high invariant mass lepton tails at the LHC. Interestingly enough, high-$p_T$ Drell-Yan data offer competitive constraints on most new physics scenarios. Furthermore, the full set of correlated constraints from $K$, $π$ and $τ$ decays imposed by $SU(2)_L$ gauge invariance is considered. The bounds from $D_{(s)}$ decays, high-$p_T$ lepton tails and $SU(2)_L$ relations chart the space of the SMEFT affecting semi(leptonic) charm flavor transitions.
