TY - JOUR
T1 - Gravity dual and CERN LHC study of single-sector supersymmetry breaking
AU - Gabella, Maxime
AU - Gherghetta, Tony
AU - Giedt, Joel
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 2007/9/7
Y1 - 2007/9/7
N2 - We propose a gravitational dual of "single-sector" models of supersymmetry breaking which contain no messenger sector and naturally explain the scale of supersymmetry breaking and the fermion mass hierarchy. In five dimensions these models can be given a simple interpretation. Inspired by flux-background solutions of type IIB supergravity, a metric background that deviates from AdS5 in the IR breaks supersymmetry, while the fermion mass hierarchy results from the wave function overlap of bulk fermions with a UV-confined Higgs field. The first and second generation squarks and sleptons, which are localized near the IR brane, directly feel the supersymmetry breaking and obtain masses of order 10 TeV. These are interpreted as composite states of the dual 4D theory. The gauginos and third generation squarks and sleptons are elementary states that obtain soft masses of order 1 TeV at the loop level via direct gauge mediation. This particle spectrum leads to distinctive signatures at the LHC, similar to the usual gauge mediation with a neutralino NLSP that decays promptly to a gravitino LSP, but with lower event rates. Nevertheless we show that with 1-10fb-1 of LHC data "single-sector" models can easily be detected above background and distinguished from conventional gravity and gauge mediation.
AB - We propose a gravitational dual of "single-sector" models of supersymmetry breaking which contain no messenger sector and naturally explain the scale of supersymmetry breaking and the fermion mass hierarchy. In five dimensions these models can be given a simple interpretation. Inspired by flux-background solutions of type IIB supergravity, a metric background that deviates from AdS5 in the IR breaks supersymmetry, while the fermion mass hierarchy results from the wave function overlap of bulk fermions with a UV-confined Higgs field. The first and second generation squarks and sleptons, which are localized near the IR brane, directly feel the supersymmetry breaking and obtain masses of order 10 TeV. These are interpreted as composite states of the dual 4D theory. The gauginos and third generation squarks and sleptons are elementary states that obtain soft masses of order 1 TeV at the loop level via direct gauge mediation. This particle spectrum leads to distinctive signatures at the LHC, similar to the usual gauge mediation with a neutralino NLSP that decays promptly to a gravitino LSP, but with lower event rates. Nevertheless we show that with 1-10fb-1 of LHC data "single-sector" models can easily be detected above background and distinguished from conventional gravity and gauge mediation.
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U2 - 10.1103/PhysRevD.76.055001
DO - 10.1103/PhysRevD.76.055001
M3 - Article
AN - SCOPUS:34548591912
SN - 1550-7998
VL - 76
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 5
M1 - 055001
ER -