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题名: Single top squark production as a probe of natural supersymmetry at the LHC
作者: Hikasa, K ;  Li, JM ;  Wu, L ;  Yang, JM
刊名: PHYSICAL REVIEW D
出版日期: 2016
卷号: 93, 期号:3, 页码:35003
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.93.035003
通讯作者: Hikasa, K ;  Yang, JM (reprint author), Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan. ;  Li, JM (reprint author), Univ Adelaide, ARC Ctr Excellence Particle Phys Terascale, Dept Phys, Adelaide, SA 5005, Australia. ;  Wu, L (reprint author), Univ Sydney, Sch Phys, ARC Ctr Excellence Particle Phys Terascale, Sydney, NSW 2006, Australia. ;  Yang, JM (reprint author), Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
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).
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: MISSING TRANSVERSE-MOMENTUM ;  PP COLLISIONS ;  SEARCH ;  EVENTS ;  JETS ;  PAIR
收录类别: SCI
项目资助者: 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]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21778
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
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.
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