Enhanced Higgs Mass in Compact Supersymmetry

Tobioka, Kohsaku; Kitano, Ryuichiro; Murayama, Hitoshi

doi:10.1007/JHEP04(2016)025

Enhanced Higgs Mass in Compact Supersymmetry

Kohsaku Tobioka
(
- Tel Aviv U. and
- Weizmann Inst. and
- KEK, Tsukuba
)
,
Ryuichiro Kitano
(
- Tokyo U., IPMU and
- KEK, Tsukuba and
- Sokendai, Tsukuba
)
,
Hitoshi Murayama
(
- LBL, Berkeley and
- Tokyo U., IPMU and
- UC, Berkeley
)

Nov 12, 2015

29 pages

Published in:

JHEP 04 (2016) 025

Published: Apr 5, 2016

e-Print:

1511.04081 [hep-ph]

DOI:

10.1007/JHEP04(2016)025

Report number:

IPMU15-0193,
KEK-TH-1873,
UCB-PTH-15-12,
IPMU15-0193.-KEK-TH-1873.-UCB-PTH-15-12

View in:

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Abstract: (Springer)

The current LHC results make weak scale supersymmetry difficult due to relatively heavy mass of the discovered Higgs boson and the null results of new particle searches. Geometrical supersymmetry breaking from extra dimensions, Scherk-Schwarz mechanism, is possible to accommodate such situations. A concrete example, the Compact Supersymmetry model, has a compressed spectrum ameliorating the LHC bounds and large mixing in the top and scalar top quark sector with

\left|{A}_t\right|\sim 2{m}_{\tilde{t}}

which radiatively raises the Higgs mass. While the zero mode contribution of the model has been considered, in this paper we calculate the Kaluza-Klein tower effect to the Higgs mass. Although such contributions are naively expected to be as small as a percent level for 10 TeV Kaluza-Klein modes, we find the effect significantly enhances the radiative correction to the Higgs quartic coupling by from 10 to 50%. This is mainly because the top quark wave function is pushed out from the brane, which makes the top mass depend on higher powers in the Higgs field. As a result the Higgs mass is enhanced up to 15 GeV from the previous calculation. We also show the whole parameter space is testable at the LHC run II.

Note:

30 pages, 8 figures, appendix C added, conclusion unchanged, journal version

Supersymmetry Phenomenology
new physics
Kaluza-Klein
space-time: higher-dimensional
supersymmetry: symmetry breaking
Higgs particle: mass
mass: radiative correction
Higgs particle: coupling constant
stop: mass
stop: mixing

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