Natural NMSSM with a Light Singlet Higgs and Singlino LSP

Supersymmetry (SUSY) is an attractive extension of the Standard Model (SM) of particle physics which solves the SM hierarchy problem. Motivated by the theoretical

\mu

-term problem of the Minimal Supersymmetric Model (MSSM), the Next-to MSSM (NMSSM) can also account for experimental deviations from the SM like the anomalous muon magnetic moment and the dark matter relic density. Natural SUSY, motivated by naturalness considerations, exhibits small fine tuning and a characteristic phenomenology with light higgsinos, stops, and gluinos. We describe a scan in NMSSM parameter space motivated by Natural SUSY and guided by the phenomenology of an NMSSM with a slightly broken Peccei–Quinn symmetry and a lightly coupled singlet. We identify a scenario which survives experimental constraints with a light singlet Higgs and a singlino lightest SUSY particle. We then discuss how the scenario is not presently excluded by searches at the Large Hadron Collider (LHC) and which channels are promising for discovery at the LHC and International Linear Collider.

Note:

Added results of checks on LHC Run 1 exclusion with CheckMATE

new physics
naturalness
supersymmetry: dark matter
minimal supersymmetric standard model
scalar particle: new particle
scalar particle: singlet
LSP: dark matter
dark matter: relic density
muon: magnetic moment
magnetic moment: anomaly

References(86)

Figures(10)

[1]

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

ATLAS

Collaboration

•

Georges Aad
(
- Freiburg U.
)

et al.

- Phys.Lett.B 716 (2012) 1-29
•
e-Print:
- 1207.7214
•
DOI:
- 10.1016/j.physletb.2012.08.020

[2]

Observation of a New Boson at a Mass of 125 GeV with the CMS Experiment at the LHC

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 716 (2012) 30-61
•
e-Print:
- 1207.7235
•
DOI:
- 10.1016/j.physletb.2012.08.021

[3]

Higgs Boson Theory and Phenomenology

Marcela Carena
(
- Fermilab
)
,
Howard E. Haber
(
- UC, Santa Cruz
)

- Prog.Part.Nucl.Phys. 50 (2003) 63-152
•
e-Print:
- hep-ph/0208209
•
DOI:
- 10.1016/S0146-6410(02)00177-1

[4]

Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments

ATLAS and
CMS

Collaborations

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Rev.Lett. 114 (2015) 191803
•
e-Print:
- 1503.07589
•
DOI:
- 10.1103/PhysRevLett.114.191803

[5]

Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 $\,\text {TeV}$

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Eur.Phys.J.C 75 (2015) 5, 212
•
e-Print:
- 1412.8662
•
DOI:
- 10.1140/epjc/s10052-015-3351-7

[6]

Measurements of the Higgs boson production and decay rates and coupling strengths using pp collision data at $\sqrt{s}=7$ and 8 TeV in the ATLAS experiment

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Eur.Phys.J.C 76 (2016) 1, 6
•
e-Print:
- 1507.04548
•
DOI:
- 10.1140/epjc/s10052-015-3769-y

[7]

Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Eur.Phys.J.C 75 (2015) 10, 476,
- Eur.Phys.J.C 76 (2016) 3, 152 (erratum)
•
e-Print:
- 1506.05669
•
DOI:
- 10.1140/epjc/s10052-015-3685-1

[8]

Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.D 92 (2015) 1, 012004
•
e-Print:
- 1411.3441
•
DOI:
- 10.1103/PhysRevD.92.012004

[9]

Limits on the Higgs boson lifetime and width from its decay to four charged leptons

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Rev.D 92 (2015) 7, 072010
•
e-Print:
- 1507.06656
•
DOI:
- 10.1103/PhysRevD.92.072010

[10]

A Supersymmetry primer

Stephen P. Martin
(
- Northern Illinois U. and
- Fermilab
)

- ,
- Adv.Ser.Direct.High Energy Phys. 21 (2010) 1-153,
- Adv.Ser.Direct.High Energy Phys. 18 (1998) 1-98
•
e-Print:
- hep-ph/9709356
•
DOI:
- 10.1142/9789812839657_0001