论文标题
希格斯（Higgs
Higgs decay into a lepton pair and a photon revisited
论文作者
论文摘要
我们介绍了$ h \ to \ ell^+el^el^ - γ$的差分衰减率的新计算，其中$ \ ell = e $或$μ$在标准模型中。分支级分和前向不对称的不对称性，根据光子相对于Lepton Momena的飞行方向定义，取决于最终状态颗粒的能量和不变质量的切割。对于这些切割的典型选择，我们找到分支比$ b（h \ to e \ bareγ）= 5.8 \ cdot 10^{ - 5} $和$ b（h \ toμ\ barμγ）= 6.4 \ cdot 10^{ - 5} $ and the Forward-Backward Asmmmmetries $ \ Mathcal {a}^{（e）} _ {\ text {fb}} = 0.343 $和$ \ MATHCAL {a}^{（μ）} _ {\ text {fext {fb}} = 0.255 $。我们为在实验分析中使用的差衰减率提供紧凑的分析表达式。
We present new calculations of the differential decay rates for $H\to \ell^+\ell^- γ$ with $\ell=e$ or $μ$ in the Standard Model. The branching fractions and forward-backward asymmetries, defined in terms of the flight direction of the photon relative to the lepton momenta, depend on the cuts on energies and invariant masses of the final state particles. For typical choices of these cuts we find the branching ratios $B(H\to e \bar e γ)=5.8\cdot 10^{-5}$ and $B(H\to μ\bar μγ)=6.4\cdot 10^{-5}$ and the forward-backward asymmetries $\mathcal{A}^{(e)}_{\text{FB}}=0.343$ and $\mathcal{A}^{(μ)}_{\text{FB}}=0.255$. We provide compact analytic expressions for the differential decay rates for the use in experimental analyses.
