Resonant Higgs pair production as a probe of stop at the LHC
Abstract Searching for top squark (stop) is a crucial task of the LHC. When the flavor conserving two body decays of the stop are kinematically forbidden, the stops produced near the threshold will live long enough to form bound states which subsequently decay through annihilation into the Standard...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-09-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | http://link.springer.com/article/10.1007/JHEP09(2017)037 |
| _version_ | 1818440731072659456 |
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| author | Guang Hua Duan Lei Wu Rui Zheng |
| author_facet | Guang Hua Duan Lei Wu Rui Zheng |
| author_sort | Guang Hua Duan |
| collection | DOAJ |
| description | Abstract Searching for top squark (stop) is a crucial task of the LHC. When the flavor conserving two body decays of the stop are kinematically forbidden, the stops produced near the threshold will live long enough to form bound states which subsequently decay through annihilation into the Standard Model (SM) final states. In the region of stop mixing angle θ t ˜ → 0 $$ {\theta}_{\tilde{t}}\to 0 $$ or π/2, we note that the LHC-13 TeV diphoton resonance data can give a strong bound on the spin-0 stoponium ( η t ˜ $$ {\eta}_{\tilde{t}} $$ ) and exclude the constituent stop mass m t ˜ $$ {m}_{\tilde{t}} $$ up to about 290 GeV. While in the large stop mixing region, the stoponium will dominantly decay to the Higgs pair. By analyzing the process pp → η t ˜ → h → b b ¯ h → τ + τ − $$ pp\to {\eta}_{\tilde{t}}\to h\left(\to b\overline{b}\right)h\left(\to {\tau}^{+}{\tau}^{-}\right) $$ , we find that a large portion of the parameter space on the m t ˜ 1 − θ t ˜ $$ {m}_{{\tilde{t}}_1}-{\theta}_{\tilde{t}} $$ plane can be probed at 2σ- significance level at the LHC with the luminosity ℒ = 3000 fb−1. |
| first_indexed | 2024-12-14T18:17:01Z |
| format | Article |
| id | doaj.art-072c360dc009474998962997cf1a0bb8 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-14T18:17:01Z |
| publishDate | 2017-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-072c360dc009474998962997cf1a0bb82022-12-21T22:52:10ZengSpringerOpenJournal of High Energy Physics1029-84792017-09-012017911210.1007/JHEP09(2017)037Resonant Higgs pair production as a probe of stop at the LHCGuang Hua Duan0Lei Wu1Rui Zheng2Institute of Theoretical Physics, Chinese Academy of SciencesDepartment of Physics and Institute of Theoretical Physics, Nanjing Normal UniversityDepartment of Physics, University of CaliforniaAbstract Searching for top squark (stop) is a crucial task of the LHC. When the flavor conserving two body decays of the stop are kinematically forbidden, the stops produced near the threshold will live long enough to form bound states which subsequently decay through annihilation into the Standard Model (SM) final states. In the region of stop mixing angle θ t ˜ → 0 $$ {\theta}_{\tilde{t}}\to 0 $$ or π/2, we note that the LHC-13 TeV diphoton resonance data can give a strong bound on the spin-0 stoponium ( η t ˜ $$ {\eta}_{\tilde{t}} $$ ) and exclude the constituent stop mass m t ˜ $$ {m}_{\tilde{t}} $$ up to about 290 GeV. While in the large stop mixing region, the stoponium will dominantly decay to the Higgs pair. By analyzing the process pp → η t ˜ → h → b b ¯ h → τ + τ − $$ pp\to {\eta}_{\tilde{t}}\to h\left(\to b\overline{b}\right)h\left(\to {\tau}^{+}{\tau}^{-}\right) $$ , we find that a large portion of the parameter space on the m t ˜ 1 − θ t ˜ $$ {m}_{{\tilde{t}}_1}-{\theta}_{\tilde{t}} $$ plane can be probed at 2σ- significance level at the LHC with the luminosity ℒ = 3000 fb−1.http://link.springer.com/article/10.1007/JHEP09(2017)037Supersymmetry Phenomenology |
| spellingShingle | Guang Hua Duan Lei Wu Rui Zheng Resonant Higgs pair production as a probe of stop at the LHC Journal of High Energy Physics Supersymmetry Phenomenology |
| title | Resonant Higgs pair production as a probe of stop at the LHC |
| title_full | Resonant Higgs pair production as a probe of stop at the LHC |
| title_fullStr | Resonant Higgs pair production as a probe of stop at the LHC |
| title_full_unstemmed | Resonant Higgs pair production as a probe of stop at the LHC |
| title_short | Resonant Higgs pair production as a probe of stop at the LHC |
| title_sort | resonant higgs pair production as a probe of stop at the lhc |
| topic | Supersymmetry Phenomenology |
| url | http://link.springer.com/article/10.1007/JHEP09(2017)037 |
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