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Title: The heavy gluino in natural no-scale F -SU(5)

Abstract

In light of recent 80–137 fb-1 results at the LHC Run 2 establishing a lower gluino mass limit of 2.25 TeV, we revisit the supersymmetric GUT model Flipped SU (5) with extra vector-like particles, known as F - SU (5), with vanishing No-Scale Supergravity boundary conditions at the string scale of about 2×1017 GeV, including the supersymmetry breaking Bμ parameter which is strictly enforced as Bμ=0 . Given the proportional dependence of all model scales on a single parameter M1/2 , No-Scale F - SU (5) was shown to possess no electroweak fine-tuning and thus persists as a natural one-parameter model. In this fresh analysis here, we demand consistency with the measured 125 GeV light Higgs boson mass, though we forgo an upper limit on the lightest neutralino relic density. The resulting phenomenology delivers a gluino mass of M(g˜)≲7.5 TeV and a lightest supersymmetric particle (LSP) of M(χ˜10)≲1.6 TeV. In order to dilute the relic density down to the WMAP and Planck measurements, we rely upon a single cosmological master coupling λ6 .

Authors:
; ; ;
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1571357
Alternate Identifier(s):
OSTI ID: 1802170
Grant/Contract Number:  
FG02-13ER42020; SC0010813
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 799 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics

Citation Formats

Ford, Thomas, Li, Tianjun, Maxin, James A., and Nanopoulos, Dimitri V. The heavy gluino in natural no-scale F -SU(5). Netherlands: N. p., 2019. Web. doi:10.1016/j.physletb.2019.135038.
Ford, Thomas, Li, Tianjun, Maxin, James A., & Nanopoulos, Dimitri V. The heavy gluino in natural no-scale F -SU(5). Netherlands. https://doi.org/10.1016/j.physletb.2019.135038
Ford, Thomas, Li, Tianjun, Maxin, James A., and Nanopoulos, Dimitri V. Sun . "The heavy gluino in natural no-scale F -SU(5)". Netherlands. https://doi.org/10.1016/j.physletb.2019.135038.
@article{osti_1571357,
title = {The heavy gluino in natural no-scale F -SU(5)},
author = {Ford, Thomas and Li, Tianjun and Maxin, James A. and Nanopoulos, Dimitri V.},
abstractNote = {In light of recent 80–137 fb-1 results at the LHC Run 2 establishing a lower gluino mass limit of 2.25 TeV, we revisit the supersymmetric GUT model Flipped SU (5) with extra vector-like particles, known as F - SU (5), with vanishing No-Scale Supergravity boundary conditions at the string scale of about 2×1017 GeV, including the supersymmetry breaking Bμ parameter which is strictly enforced as Bμ=0 . Given the proportional dependence of all model scales on a single parameter M1/2 , No-Scale F - SU (5) was shown to possess no electroweak fine-tuning and thus persists as a natural one-parameter model. In this fresh analysis here, we demand consistency with the measured 125 GeV light Higgs boson mass, though we forgo an upper limit on the lightest neutralino relic density. The resulting phenomenology delivers a gluino mass of M(g˜)≲7.5 TeV and a lightest supersymmetric particle (LSP) of M(χ˜10)≲1.6 TeV. In order to dilute the relic density down to the WMAP and Planck measurements, we rely upon a single cosmological master coupling λ6 .},
doi = {10.1016/j.physletb.2019.135038},
journal = {Physics Letters B},
number = C,
volume = 799,
place = {Netherlands},
year = {2019},
month = {12}
}