%0 Journal Article %1 hikasa2015single %A Hikasa, Ken-ichi %A Li, Jinmian %A Wu, Lei %A Yang, Jin Min %D 2015 %K LHC MSSM SUSY monosquark project_monosquark %R 10.1103/PhysRevD.93.035003 %T Single top squark production as a probe of natural supersymmetry at the LHC %U http://arxiv.org/abs/1505.06006 %X Light top squarks (stops) and light higgsinos are the key features of natural SUSY, where the higgsinos $\chi^\pm_1$ and $\chi^0_1,2$ are nearly degenerate and act as the missing transverse energy ($E^miss_T$) at the LHC. Besides the strong production, the stop can be produced via the electroweak interaction. The determination of the electroweak properties of the stop is an essential task for the LHC and future colliders. So in this paper, we investigate the single stop ($t_1$) production $pp t_1+ E^miss_T$ in the natural SUSY at the LHC, which gives the monotop signature $t+ E^miss_T$ from $t_1t \chi^0_1,2$ or the monobottom signature $b+ E^miss_T$ from $t_1 b \chi^+_1$. We perform Monte Carlo simulations for these signatures and obtain the results: (1) The signal $b+ E^miss_T$ has a better sensitivity than $t+ E^miss_T$ for probing natural SUSY; (2) The parameter region with a higgsino mass 100 GeV$łesssim$ 225 GeV and stop mass $m_t_1 łesssim$ 620 GeV, can be probed through the single stop production with $S/B > 3$ and $4\% S/B łesssim19\%$ at 14 TeV HL-LHC with an integrated luminosity of 3000 fb$^-1$.

@article{hikasa2015single, abstract = {Light top squarks (stops) and light higgsinos are the key features of natural SUSY, where the higgsinos $\tilde{\chi}^{\pm}_{1}$ and $\tilde{\chi}^0_{1,2}$ are nearly degenerate and act as the missing transverse energy ($E^{miss}_T$) at the LHC. Besides the strong production, the stop can be produced via the electroweak interaction. The determination of the electroweak properties of the stop is an essential task for the LHC and future colliders. So in this paper, we investigate the single stop ($\tilde{t}_1$) production $pp \to \tilde{t}_1+ E^{miss}_T$ in the natural SUSY at the LHC, which gives the monotop signature $t+ E^{miss}_T$ from $\tilde{t}_1\to t \tilde{\chi}^0_{1,2}$ or the monobottom signature $b+ E^{miss}_T$ from $\tilde{t}_1 \to b \tilde{\chi}^+_{1}$. We perform Monte Carlo simulations for these signatures and obtain the results: (1) The signal $b+ E^{miss}_T$ has a better sensitivity than $t+ E^{miss}_T$ for probing natural SUSY; (2) The parameter region with a higgsino mass 100 GeV$\lesssim \mu \lesssim$ 225 GeV and stop mass $m_{\tilde{t}_1} \lesssim$ 620 GeV, can be probed through the single stop production with $S/\sqrt{B} > 3$ and $4\% \lesssim S/B \lesssim19\%$ at 14 TeV HL-LHC with an integrated luminosity of 3000 fb$^{-1}$.}, added-at = {2019-06-26T18:13:36.000+0200}, author = {Hikasa, Ken-ichi and Li, Jinmian and Wu, Lei and Yang, Jin Min}, biburl = {https://www.bibsonomy.org/bibtex/25755593f0f7b46a1e500d3e74bd30bf7/diragami}, description = {Single top squark production as a probe of natural supersymmetry at the LHC}, doi = {10.1103/PhysRevD.93.035003}, interhash = {dd8ccddae05cec73e41feddbc856f33c}, intrahash = {5755593f0f7b46a1e500d3e74bd30bf7}, keywords = {LHC MSSM SUSY monosquark project_monosquark}, note = {cite arxiv:1505.06006Comment: 6 pages, 4 figures, References and discussion added, accepted by Phys. Rev. D}, timestamp = {2019-06-26T18:13:36.000+0200}, title = {Single top squark production as a probe of natural supersymmetry at the LHC}, url = {http://arxiv.org/abs/1505.06006}, year = 2015 }