Single top squark production as a probe of natural supersymmetry at the LHC

doi:http://dx.doi.org/10.1103/PhysRevD.93.035003

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	Single top squark production as a probe of natural supersymmetry at the LHC
	Hikasa, K ; Li, JM ; Wu, L 3; Yang, JM
刊名	PHYSICAL REVIEW D
	2016
卷号	93 期号:3 页码:35003
关键词	MISSING TRANSVERSE-MOMENTUM PP COLLISIONS SEARCH EVENTS JETS PAIR
DOI	http://dx.doi.org/10.1103/PhysRevD.93.035003
英文摘要	Light top squarks (stops) and light higgsinos are the key features of natural supersymmetry (SUSY), where the higgsinos (chi) over tilde (+/-)(1) and (chi) over tilde (0)(1,2) are nearly degenerate and act as the missing transverse energy (is not an element of(T)) at the LHC. Besides the pair production via strong interaction, 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) over tilde (1)) production pp ->(t) over tilde (1) + is not an element of(T) via the electroweak interaction in natural SUSY at the LHC, which gives the monotop signature t + is not an element of(T) from (t) over tilde (1) -> t (chi) over tilde (0)(1,2) or the monobottom signature b + is not an element of(T) from (t) over tilde (1) -> b (chi) over tilde (+)(1). We perform Monte Carlo simulations for these signatures and obtain the observations: (1) The signal b + is not an element of(T) has a better sensitivity than t + is not an element of(T) for probing natural SUSY; (2) the parameter region with a higgsino mass 100 GeV <= mu <= 225 GeV and stop mass m(t1)(-) less than or similar to 620 GeV can be probed through such single stop production with S/root B > 3 and 4% less than or similar to S/B less than or similar to 19% at the 14 TeV LHC with an integrated luminosity of 3000 fb(-1).
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
资助机构	Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [24540246] ; Australian Research Council ; CAS Center for Excellence in Particle Physics (CCEPP) ; National Natural Science Foundation of China (NNSFC) [11305049, 11275057, 11375001, 11405047, 11275245, 10821504, 11135003] ; Specialized Research Fund for the Doctoral Program of Higher Education [20134104120002]
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23321]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Sydney, Sch Phys, ARC Ctr Excellence Particle Phys Terascale, Sydney, NSW 2006, Australia 2.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan 3.Univ Adelaide, ARC Ctr Excellence Particle Phys Terascale, Dept Phys, Adelaide, SA 5005, Australia 4.Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Hikasa, K,Li, JM,Wu, L,et al. Single top squark production as a probe of natural supersymmetry at the LHC[J]. PHYSICAL REVIEW D,2016,93(3):35003.
APA	Hikasa, K,Li, JM,Wu, L,&Yang, JM.(2016).Single top squark production as a probe of natural supersymmetry at the LHC.PHYSICAL REVIEW D,93(3),35003.
MLA	Hikasa, K,et al."Single top squark production as a probe of natural supersymmetry at the LHC".PHYSICAL REVIEW D 93.3(2016):35003.