B_s -> D_s K的Delta Gamma_s中符号歧义的求解

对“用$B_s \to D_s K$解决$ΔΓ_s$中的符号歧义“一文的评论

Comment on "Resolving the sign ambiguity in $ΔΓ_s$ with $B_s \to D_s K$"

这是对Soumitra Nandi 1和Ulrich Nierste最近发表的论文“用$B_s \to D_s K$解决$ΔΓ_s$中的符号歧义”的评论，arXiv：0801.0143 [hep-ph]。

B0 -> D*- a1 +：手性测试和解决2β+γ中的歧义

B0 -> D*- a1+: Chirality tests and resolving an ambiguity in 2β+γ

我们指出，B介子衰变为矢量介子和轴矢量介子可以区分左、右手极化介子，而不是衰变为两个矢量介子。在B 0-> D ~*-α ~（1+）中的测量被用来检验弱b -> c电流的因子分解和V-A结构，以及解决2β+ γ中的离散模糊性。

Resolving the $ϕ_2$ ($α$) ambiguity in $B \to ρρ$

I propose an alternative method for measuring the $CP$ violating phase $ϕ_2$ ($α$) without ambiguity in an extended SU(2) isospin triangle analysis, which can ultimately be achieved by exploiting interference effects between $B^0 \to ρ^0 ρ^0$ and $B^0 \to a_1^\pm π^\mp$ in a time-dependent flavour-tagged amplitude analysis. Under certain assumptions on the effective $ϕ_2$ in each channel, I demonstrate with an idealised amplitude model that potential deviations in the measured $ϕ_2$ due to penguin contamination in $B^0 \to a_1^\pm π^\mp$ are sufficiently large within current experimental uncer…

Resolving the $ϕ_2$ ($α$) ambiguity in $B^0 \to a_1^\pm π^\mp$

I propose an alternative method for measuring the $CP$ violating phase $ϕ_2$ ($α$) without ambiguity in an extended SU(3) flavour symmetry analysis, which can ultimately be achieved by exploiting interference effects between $B \to AP$ and $B \to VV$ decay channels, where $A, V, P$ indicates an axial-vector, vector and pseudo-scalar meson, respectively. Under certain assumptions on the relevant decays based on current experimental results and minimal theoretical input, I demonstrate with an idealised amplitude model that a programme to extract a single solution for $ϕ_2$ in the range [0,$π$], …

通过$B_{u,d} \to J/ψK^\ast$和$B_s \to J/ψϕ$衰变解决CKM角$β$中的离散模糊性

Resolving a Discrete Ambiguity in the CKM Angle $β$ through $B_{u,d} \to J/ψK^\ast$ and $B_s \to J/ψϕ$ Decays

众所周知，$\sin(2β)$，其中$β$是CKM矩阵的酉三角形的角度之一，可以通过测量衰变$B_d \to J/ψK_S$中的混合诱导CP破坏以理论上干净的方式确定。这个CKM角的另一个清晰的提取是由$B_d \to J/ψ(\to l^+l^-) K^{\ast0}(\to π^0 K_S)$衰变产物的随时间变化的角分布提供的，在这种情况下，我们比在$B_d \to J/ψK_S$的情况下有更多的可观测量，因此除了$\sin(2β)$之外，还可以直接探测$\cos(2β)$。不幸的是，在$\cos(2β)$中仍然存在符号模糊性。如果它可以被解决，在CKM角度$β$的提取中的离散模糊性也可以被解决，这将允许CP违反的CKM模型的更深刻的测试。本说明表明，对$B_{u,d} \to J/ψK^{\ast}$和$B_s \to J/ψϕ$衰减过程的详细时间依赖性研究可以确定$\cos(2β)$的符号，从而消除CKM角$β$提取中的相应模糊性。

解决FSM中Higgs耦合的模糊性，从而大幅提升模型的预测范围与前景

Resolving an ambiguity of Higgs couplings in the FSM, greatly improving thereby the model's predictive range and prospects

本文解决了FSM中Higgs耦合的模糊性，证明其有效作用量除两项隐藏部分混合修正外与SM一致，且这两项修正恰好解释了近期实验报告的W质量增强和g-2等异常现象。