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1. chinaXiv:201612.00415 [pdf]

SUSY induced top quark FCNC decay t→cht→cht \rightarrow { ch} after Run I of LHC

Cao,J; Han,C; Wu,L; Yang,JM; Zhang,M
Subjects:

In light of the Higgs discovery and the nonobservation of sparticles at the LHC, we revisit the supersymmetric theory (SUSY) induced top quark flavor-changing decay into the Higgs boson. We perform a scan over the relevant SUSY parameter space by consider

submitted time 2016-12-28 Hits1293Downloads717 Comment 0

2. chinaXiv:201612.00412 [pdf]

New approach for detecting a compressed bino/wino at the LHC

Han,C; Wu,L; Yang,JM; Zhang,M; Zhang,Y
Subjects:

In some supersymmetric models like split supersymmetry or models with non-universal gaugino mass, bino (LSP) and winos (NLSP) may have rather small mass splitting in order to provide the correct dark matter relic density through bino/wino co-annihilation. 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 → jχ ?02χ ?±1 followed by χ ?02 → γχ ?01 and χ ?±1 → W?χ ?01 → l±νχ ?01 (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 ?M ? 5 ? 15 GeV between bino (LSP) and wino (NLSP), the 14 TeV LHC with luminosity of 500fb?1 can probe the wino up to 150 GeV (the sensitivity can reach 5σ for ?M = 5 GeV and 2σ for ?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 wino below 150 GeV allowed by relic density and the LUX limits.

submitted time 2016-12-28 Hits1272Downloads708 Comment 0

3. chinaXiv:201612.00405 [pdf]

Higgs self-coupling in the MSSM and NMSSM after the LHC Run 1

Wu,L; Yang,JM; Yuan,C; Zhang,M
Subjects:

Measuring the Higgs self-coupling is one of the crucial physics goals at the LHC Run-2 and other future colliders. In this work, we attempt to figure out the size of SUSY effects on the trilinear self-coupling of the 125 GeV Higgs boson in the MSSM and NM

submitted time 2016-12-28 Hits1042Downloads628 Comment 0

4. chinaXiv:201612.00403 [pdf]

hhh Coupling in SUSY Models after LHC Run I

Wu,L; Yang,JM; Yuan,C; Zhang,M
Subjects:

We examine the Higgs triple coupling in MSSM and NMSSM under current constraints, which include the LHC measurements, Higgs data, B physics, electroweak precision observables, relic density and so on. The ratio λMSSMhhh/λSMhhhλhhhMSSM/λhhhSM\lambda^{\rm M

submitted time 2016-12-28 Hits1002Downloads632 Comment 0

5. chinaXiv:201612.00397 [pdf]

Closing up a light stop window in natural SUSY at LHC

Kobakhidze,A; Liu,N; Wu,L; Yang,JM; Zhang,M
Subjects:

Top squark (stop) plays a key role in the radiative stability of the Higgs boson mass in supersymmetry (SUSY). In this work, we use the LHC Run-1 data to determine the lower mass limit of the right-handed stop in a natural SUSY scenario, where the higgsin

submitted time 2016-12-28 Hits944Downloads539 Comment 0

6. chinaXiv:201612.00396 [pdf]

750 GeV diphoton resonance in a top and bottom seesaw model

Kobakhidze,A; Wang,F; Wu,L; Yang,JM; Zhang,M
Subjects:

The top and bottom seesaw model, which extends the top seesaw in order to accommodate a 125 GeV Higgs boson, predicts vector-like top/bottom partners and these partners can be bounded to form several neutral and charged singlet composite scalars by some n

submitted time 2016-12-28 Hits1179Downloads644 Comment 0

7. chinaXiv:201612.00395 [pdf]

750 GeV diphoton resonance, 125 GeV Higgs and muon g ? 2 anomaly in deflected anomaly mediation SUSY breaking scenarios

Wang,F; Wu,L; Yang,JM; Zhang,M
Subjects:

We propose to interpret the 750 GeV diphoton excess in deflected anomaly mediation supersymmetry breaking scenarios, which can naturally predict couplings be- tween a singlet field and vector-like messengers. The CP-even scalar component (S) of the singlet field can serve as the 750 GeV resonance. The messenger scale, which is of order the gravitino scale, can be as light as Fφ ? O(10) TeV when the messenger species NF and the deflection parameter d are moderately large. Such messengers can induce the large loop decay process S → γγ. Our results show that such a scenario can successfully accommo- date the 125 GeV Higgs boson, the 750 GeV diphoton excess and the muon g ? 2 without conflicting with the LHC constraints. We also comment on the possible explanations in the gauge mediation supersymmetry breaking scenario.

submitted time 2016-12-28 Hits1154Downloads654 Comment 0

8. chinaXiv:201612.00251 [pdf]

Interpreting 750 GeV diphoton resonance as degenerate Higgs bosons in NMSSM with vector-like particles

Wang,F; Wang,W; Wu,L; Yang,JM; Zhang,M
Subjects:

In this work, we explain the 750 GeV diphoton resonance in the Next to Minimal Supersymmetric Standard Model (NMSSM) by introducing vector-like particles. Such an extension is well motivated from the top-down view since some grand unified theories usually

submitted time 2016-12-27 Hits998Downloads553 Comment 0

9. chinaXiv:201612.00250 [pdf]

Explaining 750 GeV diphoton excess from top/bottom partner cascade decay in two-Higgs-doublet model extension

Han,X; Wang,L; Wu,L; Yang,JM; Zhang,M
Subjects:

In this paper, we interpret the 750 GeV diphoton excess in the Zee–Babu extension of the two-Higgs-doublet model by introducing a top partner ( T )/bottom partner ( B ). In the alignment limit, the 750 GeV resonance is identified as the heavy CP-even Higg

submitted time 2016-12-27 Hits1059Downloads597 Comment 0

10. chinaXiv:201612.00245 [pdf]

Top-squark in natural SUSY under current LHC run-2 data

Han,C; Ren,J; Wu,L; Yang,JM; Zhang,M
Subjects:

We utilize the recent LHC-13 TeV data to study the lower mass bound on top-squark (stop) in natural supersymmetry. We recast the LHC sparticle inclusive search of (≥1)jets+EmissT(≥1)jets+ETmiss(\ge 1){\rm jets} + E^{miss}_T with αTαT\alpha_T variable, the

submitted time 2016-12-27 Hits912Downloads536 Comment 0

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