论文标题
为了追求新物理学，$ b_d^0 \至j/ψk^0 $和$ b_s^0 \ to j/ψϕ $在高精度边界处衰减
In Pursuit of New Physics with $B_d^0\to J/ψK^0$ and $B_s^0\to J/ψϕ$ Decays at the High-Precision Frontier
论文作者
论文摘要
衰减$ b_d^0 \ to j/ψk^0 _ {\ text {s}} $和$ b_s^0 \ to j/ψϕ $在确定$ b^0_q $ - $ \ bar b^0_q $（$ q = d，s $ q = d，s $）混合阶段$ cume $ discuse $ discative $ discative $ discative $ discation $ b^0_q $ - $ \ bar b^0_q $ - bar b^0_q $ - 这些数量提取的理论精度受到双重抑制的企鹅拓扑的限制，可以通过$ SU（3）$ su（3）$强烈相互作用的风味对称性通过控制通道来包含。使用当前可用的数据和新的同时分析，我们讨论了这些效果的最新图片，并将其包含在提取的$ ϕ_Q $值中。我们对这些阶段的标准模型预测进行了批判性观察，并探索了新物理学留下的房间。考虑到高精度物理时代的未来场景，我们说明我们可能会获得超出标准模型以外的物理信号，其显着性远高于五个标准偏差。 We also determine effective colour-suppression factors of $B_d^0\to J/ψK^0$, $B_d^0\to J/ψK^0_{\text{S}}$ and $B_d^0\to J/ψπ^0$ decays, which serve as benchmarks for QCD calculations of the underlying decay dynamics, and present a new method using information from semileptonic美元
The decays $B_d^0\to J/ψK^0_{\text{S}}$and $B_s^0\to J/ψϕ$ play a key role for the determination of the $B^0_q$-$\bar B^0_q$ ($q=d,s$) mixing phases $ϕ_d$ and $ϕ_s$, respectively. The theoretical precision of the extraction of these quantities is limited by doubly Cabibbo-suppressed penguin topologies, which can be included through control channels by means of the $SU(3)$ flavour symmetry of strong interactions. Using the currently available data and a new simultaneous analysis, we discuss the state-of-the-art picture of these effects and include them in the extracted $ϕ_q$ values. We have a critical look at the Standard Model predictions of these phases and explore the room left for new physics. Considering future scenarios for the high-precision era of flavour physics, we illustrate that we may obtain signals for physics beyond the Standard Model with a significance well above five standard deviations. We also determine effective colour-suppression factors of $B_d^0\to J/ψK^0$, $B_d^0\to J/ψK^0_{\text{S}}$ and $B_d^0\to J/ψπ^0$ decays, which serve as benchmarks for QCD calculations of the underlying decay dynamics, and present a new method using information from semileptonic $B_d^0\toπ^-\ell^+ν_{\ell}$ and $B_s^0\to K^-\ell^+ν_{\ell}$ decays.
