| Article | |
| Report number | arXiv:2202.03258 |
| Title | Enhanced Higgs pair production from higgsino decay at the HL-LHC |
| Related title | Enhanced Higgs pair production from higgsino decay at the HL-LHC |
| Author(s) | Dai, Jianpeng (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS) ; Liu, Tao (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Wang, Daohan (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS) ; Yang, Jin Min (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS) |
| Publication | 2022-10 |
| Imprint | 2022-02-07 |
| Number of pages | 23 |
| Note | 1+19 pages, 7 figs, 4 tables, analysis result added, references added and a typo removed |
| In: | Nucl. Phys. B 983 (2022) 115912 |
| DOI | 10.1016/j.nuclphysb.2022.115912 |
| Subject category | Particle Physics - Experiment ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | CERN LHC |
| Project | CERN HL-LHC |
| Abstract | The scenario of multi-sector SUSY breaking predicts pseudo-goldstinos which are not absorbed by the gravitino and their mass can be as low as ${{\cal O} (0.1)}$ GeV. Since the interactions of pseudo-goldstinos are not so weak as gravitino, a produced higgsino can decay to a pseudo-goldstino plus a Higgs boson insider the detector at the LHC, and thus the higgsino pair production can lead to the signal of Higgs pair plus missing energy. For the scenario of natural SUSY which requires rather light higgsinos, such events may sizably outnumber the Higgs pair events predicted by the SM and be accessible at the HL-LHC (14 TeV with a luminosity of 3 $\rm{ab}^{-1}$). In this work we examine the observability of such Higgs pair plus missing energy from the decay of light higgsinos produced at the HL-LHC. Considering three channels of the Higgs-pair decay ($bbWW^*$, $bb\gamma\gamma$, $bbbb$), our detailed Monte Carlo simulations for the signal and backgrounds show that the best channel is $bbbb+\textrm{E\!\!\!\! \!\slash}_T$, whose statistical significance can reach $2\sigma$ level for a light higgsino allowed by current experiments. This is over the SM Higgs pair result which is about $1.8\sigma$. |
| Copyright/License | preprint: (License: CC BY 4.0) publication: © 2022-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
記錄創建於2022-02-23，最後更新在2023-10-25
