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Title: LHC luminosity and energy upgrades confront natural supersymmetry models

Abstract

The electroweak fine-tuning measure Δ EW allows for correlated supersymmetry (SUSY) soft terms as are expected in any ultraviolet complete theory. Requiring no less than 3% electroweak fine-tuning implies upper bounds of about 360 GeV on all Higgsinos, while top squarks are lighter than ~ 3 TeV and gluinos are bounded by ~ 6 9 TeV . We examine the reach for SUSY of the planned high luminosity (HL: 3 ab - 1 at 14 TeV) and the proposed high energy (HE: 15 ab - 1 at 27 TeV) upgrades of the LHC via four LHC collider search channels relevant for natural SUSY: 1. gluino pair production followed by gluino decay to third generation (s)quarks, 2. top squark pair production followed by decay to third generation quarks and light Higgsinos, 3. neutral Higgsino pair production with QCD jet radiation (resulting in monojet events with soft dileptons), and 4. wino pair production followed by decay to light Higgsinos leading to same-sign diboson production. We confront our reach results with upper limits on superpartner masses in four natural SUSY models: natural gravity mediation via the 1. two- and 2. three-extra-parameter nonuniversal Higgs models, 3. natural minilandscape models with generalized mirage mediation and 4. natural anomaly mediation We find that while the HL-LHC can probe considerable portions of natural SUSY parameter space in all these models, the HE-LHC will decisively cover the entire natural SUSY parameter space with better than 3% fine-tuning

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States); Univ. of Oklahoma, Norman, OK (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1477576
Alternate Identifier(s):
OSTI ID: 1597964
Report Number(s):
arXiv:1808.04844
Journal ID: ISSN 2470-0010; PRVDAQ; 075010
Grant/Contract Number:  
SC0010504
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 98 Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; LHC; supersymmetry

Citation Formats

Baer, Howard, Barger, Vernon, Gainer, James S., Sengupta, Dibyashree, Serce, Hasan, and Tata, Xerxes. LHC luminosity and energy upgrades confront natural supersymmetry models. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.98.075010.
Baer, Howard, Barger, Vernon, Gainer, James S., Sengupta, Dibyashree, Serce, Hasan, & Tata, Xerxes. LHC luminosity and energy upgrades confront natural supersymmetry models. United States. doi:10.1103/PhysRevD.98.075010.
Baer, Howard, Barger, Vernon, Gainer, James S., Sengupta, Dibyashree, Serce, Hasan, and Tata, Xerxes. Fri . "LHC luminosity and energy upgrades confront natural supersymmetry models". United States. doi:10.1103/PhysRevD.98.075010.
@article{osti_1477576,
title = {LHC luminosity and energy upgrades confront natural supersymmetry models},
author = {Baer, Howard and Barger, Vernon and Gainer, James S. and Sengupta, Dibyashree and Serce, Hasan and Tata, Xerxes},
abstractNote = {The electroweak fine-tuning measure ΔEW allows for correlated supersymmetry (SUSY) soft terms as are expected in any ultraviolet complete theory. Requiring no less than 3% electroweak fine-tuning implies upper bounds of about 360 GeV on all Higgsinos, while top squarks are lighter than ~3TeV and gluinos are bounded by ~6–9TeV. We examine the reach for SUSY of the planned high luminosity (HL: 3ab-1 at 14 TeV) and the proposed high energy (HE: 15ab-1 at 27 TeV) upgrades of the LHC via four LHC collider search channels relevant for natural SUSY: 1. gluino pair production followed by gluino decay to third generation (s)quarks, 2. top squark pair production followed by decay to third generation quarks and light Higgsinos, 3. neutral Higgsino pair production with QCD jet radiation (resulting in monojet events with soft dileptons), and 4. wino pair production followed by decay to light Higgsinos leading to same-sign diboson production. We confront our reach results with upper limits on superpartner masses in four natural SUSY models: natural gravity mediation via the 1. two- and 2. three-extra-parameter nonuniversal Higgs models, 3. natural minilandscape models with generalized mirage mediation and 4. natural anomaly mediation We find that while the HL-LHC can probe considerable portions of natural SUSY parameter space in all these models, the HE-LHC will decisively cover the entire natural SUSY parameter space with better than 3% fine-tuning},
doi = {10.1103/PhysRevD.98.075010},
journal = {Physical Review D},
number = 7,
volume = 98,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
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DOI: 10.1103/PhysRevD.98.075010

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Cited by: 8 works
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    Works referencing / citing this record:

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