ITP OpenIR  > SCI期刊论文
Han, CC; Wu, L; Yang, JM; Zhang, MC; Zhang, Y; Han, CC (reprint author), Asia Pacific Ctr Theoret Phys, San 31, Pohang 790784, South Korea.
New approach for detecting a compressed bino/wino at the LHC
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractIn some supersymmetric models like split supersymmetry or models with nonuniversal gaugino mass, 'bino [lightest sparticle (LSP)] and wino [next-to-lightest sparticle (NLSP)] may have rather small mass splitting in order to provide the correct dark matter relic density through bino/wino coannihilation. Such a scenario with the compressed bino/wino is difficult to explore at the LHC. In this work we propose to probe this scenario from pp -> j (chi) over tilde (0)(2)(chi) over tilde (+/-)(1) followed by (chi) over tilde (0)(2) -> gamma(chi) over tilde (0)(1) and (chi) over tilde (+/-)(1) -> W*(chi) over tilde (0)(1) -> l(+/-)nu(chi) over tilde (0)(1) (this method is also applicable to the compressed bino/Higgsino scenario). Through a detailed Monte Carlo simulation for both the signal and the backgrounds, we find that for a mass splitting Delta M similar to 10-15 GeV between bino (LSP) and wino (NLSP), the 14 TeV LHC with a luminosity of 1000 fb(-1) can probe the wino up to 150 GeV (the sensitivity can reach 3.4 sigma for Delta M = 10 GeV and 2 sigma for Delta M = 15 GeV). We also investigate the dark matter detection sensitivities for this scenario and find that the planned XENON-1T (2017) cannot fully cover the parameter space with a wino below 150 GeV allowed by relic density and the LUX limits.
2015
Volume91Issue:5Pages:55030
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.91.055030
Indexed BySCI
Funding OrganizationKorea Ministry of Education, Science and Technology (MEST) under the Young Scientist Training Program at the Asia Pacific Center for Theoretical Physics (APCTP) ; Korea Ministry of Education, Science and Technology (MEST) under the Young Scientist Training Program at the Asia Pacific Center for Theoretical Physics (APCTP) ; Korea Ministry of Education, Science and Technology (MEST) under the Young Scientist Training Program at the Asia Pacific Center for Theoretical Physics (APCTP) ; Korea Ministry of Education, Science and Technology (MEST) under the Young Scientist Training Program at the Asia Pacific Center for Theoretical Physics (APCTP) ; Australian Research Council ; Australian Research Council ; Australian Research Council ; Australian Research Council ; National Natural Science Foundation of China (NNSFC) [11222548, 11305049, 11405047, 11275245, 10821504, 11135003] ; National Natural Science Foundation of China (NNSFC) [11222548, 11305049, 11405047, 11275245, 10821504, 11135003] ; National Natural Science Foundation of China (NNSFC) [11222548, 11305049, 11405047, 11275245, 10821504, 11135003] ; National Natural Science Foundation of China (NNSFC) [11222548, 11305049, 11405047, 11275245, 10821504, 11135003] ; Specialized Research Fund for the Doctoral Program of Higher Education [20134104120002] ; Specialized Research Fund for the Doctoral Program of Higher Education [20134104120002] ; Specialized Research Fund for the Doctoral Program of Higher Education [20134104120002] ; Specialized Research Fund for the Doctoral Program of Higher Education [20134104120002]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21045
CollectionSCI期刊论文
Corresponding AuthorHan, CC (reprint author), Asia Pacific Ctr Theoret Phys, San 31, Pohang 790784, South Korea.
Recommended Citation
GB/T 7714
Han, CC,Wu, L,Yang, JM,et al. New approach for detecting a compressed bino/wino at the LHC[J]. PHYSICAL REVIEW D,2015,91(5):55030.
APA Han, CC,Wu, L,Yang, JM,Zhang, MC,Zhang, Y,&Han, CC .(2015).New approach for detecting a compressed bino/wino at the LHC.PHYSICAL REVIEW D,91(5),55030.
MLA Han, CC,et al."New approach for detecting a compressed bino/wino at the LHC".PHYSICAL REVIEW D 91.5(2015):55030.
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