论文标题
测试$ r_ {d^{（*）}} $在LHEC上的异常
Testing the $R_{D^{(*)}}$ Anomaly at the LHeC
论文作者
论文摘要
B物理学异常最近在几个理论框架中预测了对Leptoquarks（LQ）的新兴趣。在简化但保守的假设下，我们表明，LHC搜索的当前限制以及要解释$ r_ {d^{（*）}} $的观察值的要求，将$ r_2 $ leptoquark质量约束至800美元的范围为$ 800 \ leq m_ {r_2} {r_2}} \ leq 1000 $ gev。我们通过对信号和主要的标准模型背景进行剪切计数分析，通过其在$bτ$最终状态下的共鸣来研究LHEC $ r_2 $的搜索。我们发现，LHEC具有$ R_2 $的出色发现潜力，即使对于第一代的耦合，也很小至$ {\ cal o}（10^{ - 2}）$。
B-Physics anomalies have recently raised renewed interest in leptoquarks (LQ), predicted in several theoretical frameworks. Under simplifying but conservative assumptions, we show that the current limits from LHC searches together with the requirement to explain the observed value for $R_{D^{(*)}}$ constrain the $R_2$ leptoquark mass to be in the range of $800 \leq m_{R_2} \leq 1000$ GeV. We study the search for $R_2$ at the LHeC via its resonance in the $bτ$ final state by performing a cut-and-count analysis of the signal and the dominant Standard Model backgrounds. We find that the LHeC has an excellent discovery potential for $R_2$ even for couplings to the first generation as small as ${\cal O}(10^{-2})$.
