ATLAS on-Z Excess via gluino-Higgsino-singlino decay chains in the NMSSM - INSPIRE

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ATLAS on-Z Excess via gluino-Higgsino-singlino decay chains in the NMSSM

Keisuke Harigaya
(
- UC, Berkeley and
- LBNL, Berkeley and
- Tokyo U., ICRR
)
,
Masahiro Ibe
(
- Tokyo U., ICRR and
- Tokyo U., IPMU
)
,
Teppei Kitahara
(
- KIT, Karlsruhe, TTP and
- KIT, Karlsruhe, IKP and
- KEK, Tsukuba
)

Oct 26, 2015

16 pages

Published in:

JHEP 01 (2016) 030

Published: Jan 7, 2016

e-Print:

1510.07691 [hep-ph]

DOI:

10.1007/JHEP01(2016)030

Report number:

UCB-PTH-15-11,
IPMU15-0186,
TTP15-037,
KEK-TH-1859

View in:

ADS Abstract Service

reference search4 citations

Citations per year

Abstract: (Springer)

Recently the ATLAS experiment has reported 3.0 σ excess in an on-Z signal region in searches for supersymmetric particles. We find that the next-to-minimal supersymmetric standard model can explain this excess by the production of gluinos which mainly decay via

\tilde{g}\to g{\tilde{\chi}}_{2,3}^0\to gZ{\tilde{\chi}}_1^0

where

{\tilde{\chi}}_{2,3}^0

and

{\tilde{\chi}}_1^0

are the Higgsino and the singlino-like neutralinos, respectively. We show that the observed dark matter density is explained by the thermal relic density of the singlino-like neutralino, simultaneously. We also discuss the searches for the Higgs sector of this scenario at the Large Hadron Collider.

Note:

16 pages, 2 figures, 1 table

Supersymmetry Phenomenology
new physics
supersymmetry
minimal supersymmetric standard model
CERN LHC Coll
ATLAS
Higgs particle
gluino: production
gluino: decay
neutralino: dark matter

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