论文标题
$ b $梅森混合中的新物理学：未来的敏感性和限制
New physics in $B$ meson mixing: future sensitivity and limitations
论文作者
论文摘要
中性介子的混合对实验室实验中探测的一些最高尺度敏感。鉴于计划中的LHCB升级II，Belle II的可能升级以及对拟议的FCC-EE计划的TERA-$ Z $阶段中风味物理的广泛兴趣，我们研究了在这些基础标准的情况下对$ b_d $和$ b_s $混合的新物理贡献的约束。我们探讨了该程序的局限性，并确定$ | v_ {cb} | $的测量值是最大程度地提高未来敏感性的关键成分之一。我们推测该瓶颈可能的解决方案。鉴于当前具有半衰减$ b $衰减中标准模型（SM）的张力，我们探讨了其分辨率如何影响对混合中新物理的搜索。即使新物理学具有与SM相同的CKM和循环抑制，但敏感性也将达到2 TEV，如果取消任何SM抑制，则可能会更高。我们说明了该程序的发现潜力。
The mixing of neutral mesons is sensitive to some of the highest scales probed in laboratory experiments. In light of the planned LHCb Upgrade II, a possible upgrade of Belle II, and the broad interest in flavor physics in the tera-$Z$ phase of the proposed FCC-ee program, we study constraints on new physics contributions to $B_d$ and $B_s$ mixings which can be obtained in these benchmark scenarios. We explore the limitations of this program, and identify the measurement of $|V_{cb}|$ as one of the key ingredients in which progress beyond current expectations is necessary to maximize future sensitivity. We speculate on possible solutions to this bottleneck. Given the current tension with the standard model (SM) in semileptonic $B$ decays, we explore how its resolution may impact the search for new physics in mixing. Even if new physics has the same CKM and loop suppressions of flavor changing processes as the SM, the sensitivity will reach 2 TeV, and it can be much higher if any SM suppressions are lifted. We illustrate the discovery potential of this program.
