论文标题
在130 GEV处有轻微多余的过量
Slight excess at 130 GeV in search for a charged Higgs boson decaying to a charm quark and a bottom quark at the Large Hadron Collider
论文作者
论文摘要
搜索带有充电的希格斯玻色子（$ h^\ pm $）腐烂的夸张夸克和底部夸克（$ h^\ pm \ to cb $）在顶级夸克（$ t \ t \ h^\ pm b $）中进行了大型强子撞机（LHC）。在Atlas合作的最新搜索中（所有运行II数据，139 fb $^{ - 1} $）已观察到局部超过3σ$的本地超过$3σ$，最好通过质量（$ m_ {h^\ pm} $）收取的higgs玻色子（$ m_ {h^\ pm} $），约130 GEV和br $（br $^br）的产品（br^br）。 b）\ times {\ rm br}（h^\ pm \ to cb）= 0.16 \％\ pm 0.06 \％$。在两种二键式模型（2hdm）的背景下，具有$ h^\ pm $独立的Yukawa耦合，我们呈现了该超过的参数空间（假设是真实的）可以考虑到LHC搜索$ h^\ pm \ pm pm for cs $和$ h^pm pm} $ pm pm \ to $ for的限制。 GEV和从$ b \到Sγ$的约束。然后表明，在2HDM中不能用自然风味保存来解释这种多余的东西，但是可以在翻转的三刺d-doublet模型（3HDM）和对齐的2HDM（A2HDM）中容纳。 Upcoming searches with 139 fb$^{-1}$ in the channels $H^\pm\to cb$ (CMS), $H^\pm \to cs$ (ATLAS/CMS) and $H^\pm \to τν$ (ATLAS/CMS) will determine if the excess is the first sign of an $H^\pm$ with $m_{H^\pm}=130$ GEV。
Searches for a charged Higgs boson ($H^\pm$) decaying to a charm quark and a bottom quark ($H^\pm \to cb$) have been carried out at the Large Hadron Collider (LHC) in the decay of top quarks ($t\to H^\pm b$). In a recent search by the ATLAS collaboration (with all Run II data, 139 fb$^{-1}$) a local excess of around $3σ$ has been observed, which is best fitted by a charged Higgs boson with a mass ($m_{H^\pm}$) of around 130 GeV and a product of branching ratios (BRs) given by BR$(t\to H^\pm b)\times{\rm BR}(H^\pm\to cb)=0.16\%\pm 0.06\%$. In the context of Two-Higgs-Doublet Models (2HDM) with independent Yukawa couplings for $H^\pm$ we present the parameter space for which this excess (assuming it to be genuine) can be accommodated, taking into account the limits from LHC searches for $H^\pm\to cs$ and $H^\pm\to τν$ at $m_{H^\pm}$=130 GeV and the constraint from $b\to sγ$. It is then shown that such an excess cannot be explained in 2HDMs with natural flavour conservation, but can be accommodated in the flipped Three-Higgs-Doublet Model (3HDM) and in the aligned 2HDM (A2HDM). Upcoming searches with 139 fb$^{-1}$ in the channels $H^\pm\to cb$ (CMS), $H^\pm \to cs$ (ATLAS/CMS) and $H^\pm \to τν$ (ATLAS/CMS) will determine if the excess is the first sign of an $H^\pm$ with $m_{H^\pm}=130$ GeV.
