Coupling Unification and Dark Matter in a Standard Model Extension with Adjoint Majorana Fermions - INSPIRE

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Coupling Unification and Dark Matter in a Standard Model Extension with Adjoint Majorana Fermions

Tasuku Aizawa
(
- Tokyo U., ICRR
)
,
Masahiro Ibe
(
- Tokyo U., ICRR and
- Tokyo U., IPMU
)
,
Kunio Kaneta
(
- Tokyo U., ICRR
)

Nov 21, 2014

14 pages

Published in:

Phys.Rev.D 91 (2015) 7, 075012

Published: Apr 17, 2015

e-Print:

1411.6044 [hep-ph]

DOI:

10.1103/PhysRevD.91.075012

Report number:

IPMU-14-0343,
ICRR-REPORT-695-2014-21

View in:

ADS Abstract Service

reference search13 citations

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Abstract: (APS)

We revisit an extension of the Standard Model with Majorana fermions in adjoint representations, where SU(2)L triplet and SU(3)c octet fermions are introduced. The model provides not only a precise coupling unification but also a dark matter candidate [an SU(2)L triplet fermion]. In particular, we show that an SU(3)c octet fermion, which is required for successful unification, can be a good nonthermal source of the triplet fermion dark matter. We also show that the scenario predicts a rather short lifetime of the proton compared with the minimal supersymmetric grand unified theory, and the most parameter space can be explored by future experiments such as the Hyper-Kamiokande experiment.

Note:

29 pages, 11 figures

12.10.Kt
95.35.+d
13.30.-a
fermion: Majorana
fermion: triplet
fermion: dark matter
fermion: octet
standard model: supersymmetry
p: lifetime
SU(3): octet

References(101)

Figures(11)

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