论文标题
hl-lhc的矢量样y夸克的单个生产
Single Production of Vectorlike Y Quarks at the HL-LHC
论文作者
论文摘要
我们研究了带电电荷的外来矢量$ y $ y $ y $ y $ y $ | q_ {y} | = 4/3 $的单一生产，其随后在高光度LHC（HL-LHC）处的衰减。夸克（VLQ）衰减的大多数矢量都有中间状态的electroweak $ w $玻色子。除了他们的直接作品或成对外，$ w $ boson还参与了衰减链，这是由于顶级夸克的衰变，这有助于背景。尤其是这种情况，因为估计由高横截面生产的矢量$ y $ Quark只能通过$ W $ boson和Down Type Quark（$ d，s，b $）衰减。我们计算信号的横截面（对于不同的耦合和质量值）和相关的标准模型（SM）背景。经过信号和背景事件的快速模拟后，对参数的敏感性的估计（量范围范围为1000-2500 GEV耦合值$κ__{y} = 0.5 $，质量范围为500-2000 GEV，耦合值$κ__} = 0.3 $和$κ___{y} = 0.15 = 0.15 $） $ \ sqrt {s} = 14 $ tev和300 fb $^{ - 1} $，1000 fb $^{ - 1} $和3000 fb $^{ - 1} $的集成光度投影。
We study single production of exotic vectorlike $Y$ quark with electric charge $|Q_{Y}|=4/3$ and its subsequent decay at the High Luminosity LHC (HL-LHC). Most of the vector like quark (VLQ) decays have the electroweak $W$ bosons in the intermediate state. Besides their direct productions singly or pairs, the $W$-bosons are involved in decay chains as a result of the decay of a top quark which contributes to the background. This is particularly the case since vectorlike $Y$ quark, which is estimated to be produced with a high cross-section, can only decay via a $W$ boson and a down type quark ($d,s,b$). We calculate the cross sections of signal (for different couplings and mass values) and relevant Standard Model (SM) backgrounds. After a fast simulation of signal and background events, estimations of the sensitivity to the parameters (mass range 1000-2500 GeV for coupling value $κ_{Y}=0.5$, and mass range 500-2000 GeV for coupling values $κ_{Y}=0.3$ and $κ_{Y}=0.15$) have been presented at the HL-LHC with center of mass energy $\sqrt{s}=14$ TeV and integrated luminosity projections of 300 fb$^{-1}$, 1000 fb$^{-1}$ and 3000 fb$^{-1}$.
