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1. chinaXiv:201612.00462 [pdf]

SUSY dark matter in light of CDMS II results: a comparative study for different models

Cao,J; Hikasa,K; Wang,W; Yang,JM; Yu,L

We perform a comparative study of the neutralino dark matter scattering on nucleon in three popular supersymmetric models: the minimal (MSSM), the next-to-minimal (NMSSM) and the nearly minimal (nMSSM). First, we give the predictions of the elastic cross

submitted time 2016-12-28 Hits1664Downloads923 Comment 0

2. chinaXiv:201612.00459 [pdf]

Constraints of dark matter direct detection experiments on the MSSM and implications on LHC Higgs search

Cao,J; Hikasa,K; Wang,W; Yang,JM; Yu,L

Assuming the lightest neutralino solely composes the cosmic dark matter, we examine the constraints of the CDMS-II and XENON100 dark matter direct searches on the parameter space of the MSSM Higgs sector. We find that the current CDMS-II/XENON100 limits c

submitted time 2016-12-28 Hits1579Downloads922 Comment 0

3. chinaXiv:201612.00449 [pdf]

Light dark matter in NMSSM and implication on Higgs phenomenology

Cao,J; Hikasa,K; Wang,W; Yang,JM; Hikasa,K; Wang,W; Yang,JM

For the experimental search of neutralino dark matter, it is important to know its allowed mass and scattering cross section with the nucleon. In order to figure out how light a neutralino dark matter can be predicted in low energy supersymmetry, we scan

submitted time 2016-12-28 Hits1383Downloads794 Comment 0

4. chinaXiv:201612.00443 [pdf]

Testing new physics models by top charge asymmetry and polarization at the LHC

Cao,J; Hikasa,K; Wang,L; Wu,L; Yang,JM

As a top quark factory, the LHC can test the new physics models used to explain the top quark forward-backward asymmetry A^t_FB measured at the Tevatron. In this work we perform a comparative study for two such models: the W'-model and the color triplet d

submitted time 2016-12-28 Hits1425Downloads760 Comment 0

5. chinaXiv:201612.00422 [pdf]

Current experimental bounds on stop mass in natural SUSY

Han,C; Hikasa,K; Wu,L; Yang,JM; Zhang,Y

Motivated by the recent progress of direct search for the productions of stop pair and sbottom pair at the LHC, we examine the constraints of the search results on the stop (t ? ) mass in natural SUSY. We first scan the parameter space of natural SUSY in the framework of MSSM, considering the constraints from the Higgs mass, B-physics and electroweak precision measurements. Then in the allowed parameter space we perform a Monte Carlo simulation for stop pair production followed by t ? → tχ ?0 or t ? → bχ ?+ and sbottom pair production followed by ?b → bχ ?0 or ?b → tχ ??. 1111 1111 Using the combined results of ATLAS with 20.1 fb?1 from the search of l + jets + E/ T , hadronic tt ?+E/T and 2b+E/T, we find that a stop lighter than 600 GeV can be excluded at 95% CL in this scenario.

submitted time 2016-12-28 Hits1428Downloads783 Comment 0

6. chinaXiv:201612.00416 [pdf]

Pseudo-goldstino and electroweak gauginos at the LHC

Hikasa,K; Liu,T; Wang,L; Yang,JM

The multi-sector SUSY breaking predicts the existence of pseudo-goldstino, which could couple more strongly to visible fields than ordinary gravitino. Then the lightest neutralino and chargino can decay into a pseudo-goldstino plus a Z-boson, Higgs boson

submitted time 2016-12-28 Hits1202Downloads645 Comment 0

7. chinaXiv:201612.00401 [pdf]

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

Hikasa,K; Li,J; Wu,L; Yang,JM

Light top squarks (stops) and light higgsinos are the key features of natural supersymmetry (SUSY), where the higgsinos χ?1± and χ?1,20 are nearly degenerate and act as the missing transverse energy (ET) at the LHC. Besides the pair production via strong

submitted time 2016-12-28 Hits1059Downloads620 Comment 0

8. chinaXiv:201612.00367 [pdf]

SUSY-induced FCNC top-quark processes at the large hadron collider

Cao,J; Eilam,G; Frank,M; Hikasa,K; Liu,G; Turan,I; Yang,J

We systematically calculate various flavor-changing neutral-current top-quark processes induced by supersymmetry at the Large Hadron Collider, which include five decay modes and six production channels. To reveal the characteristics of these processes, we

submitted time 2016-12-28 Hits1173Downloads664 Comment 0

9. chinaXiv:201612.00243 [pdf]

Leptonic mono-top from single stop production at LHC

Duan,GH; Hikasa,K; Wu,L; Yang,JM; Zhang,M

Top squark (stop) can be produced via QCD interaction but also the electroweak interaction at the LHC. In this paper, we investigate the observability of the associated production of stop and chargino, pp→t~1χ~?1pp→t~1χ~1?pp \to \tilde{t}_1\tilde{\chi}^-_

submitted time 2016-12-27 Hits834Downloads468 Comment 0

10. chinaXiv:201612.00242 [pdf]

Status of CMSSM in light of current LHC Run-2 and LUX data

Han,C; Hikasa,K; Wu,L; Yang,JM; Zhang,Y

Motivated by the latest results of the LHC Run-2 and LUX experiments, we examine the status of the constrained minimal supersymmetric standard model (CMSSM) by performing a global fit. We construct a likelihood function including the electroweak precision

submitted time 2016-12-27 Hits680Downloads370 Comment 0

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