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Title: Precision corrections to fine tuning in SUSY

Abstract

Requiring that the contributions of supersymmetric particles to the Higgs mass are not highly tuned places upper limits on the masses of superpartners — in particular the higgsino, stop, and gluino. We revisit the details of the tuning calculation and introduce a number of improvements, including RGE resummation, two-loop effects, a proper treatment of UV vs. IR masses, and threshold corrections. This improved calculation more accurately connects the tuning measure with the physical masses of the superpartners at LHC-accessible energies. After these refinements, the tuning bound on the stop is now also sensitive to the masses of the 1st and 2nd generation squarks, which limits how far these can be decoupled in Effective SUSY scenarios. We find that, for a fixed level of tuning, our bounds can allow for heavier gluinos and stops than previously considered. Despite this, the natural region of supersymmetry is under pressure from the LHC constraints, with high messenger scales particularly disfavored.

Authors:
 [1];  [1];  [1]
  1. Rutgers Univ., Piscataway, NJ (United States). New High Energy Theory Center (NHETC). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Rutgers Univ., Piscataway, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1425790
Grant/Contract Number:
SC0013678
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 6; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; supersymmetry phenomenology

Citation Formats

Buckley, Matthew R., Monteux, Angelo, and Shih, David. Precision corrections to fine tuning in SUSY. United States: N. p., 2017. Web. doi:10.1007/JHEP06(2017)103.
Buckley, Matthew R., Monteux, Angelo, & Shih, David. Precision corrections to fine tuning in SUSY. United States. doi:10.1007/JHEP06(2017)103.
Buckley, Matthew R., Monteux, Angelo, and Shih, David. Tue . "Precision corrections to fine tuning in SUSY". United States. doi:10.1007/JHEP06(2017)103. https://www.osti.gov/servlets/purl/1425790.
@article{osti_1425790,
title = {Precision corrections to fine tuning in SUSY},
author = {Buckley, Matthew R. and Monteux, Angelo and Shih, David},
abstractNote = {Requiring that the contributions of supersymmetric particles to the Higgs mass are not highly tuned places upper limits on the masses of superpartners — in particular the higgsino, stop, and gluino. We revisit the details of the tuning calculation and introduce a number of improvements, including RGE resummation, two-loop effects, a proper treatment of UV vs. IR masses, and threshold corrections. This improved calculation more accurately connects the tuning measure with the physical masses of the superpartners at LHC-accessible energies. After these refinements, the tuning bound on the stop is now also sensitive to the masses of the 1st and 2nd generation squarks, which limits how far these can be decoupled in Effective SUSY scenarios. We find that, for a fixed level of tuning, our bounds can allow for heavier gluinos and stops than previously considered. Despite this, the natural region of supersymmetry is under pressure from the LHC constraints, with high messenger scales particularly disfavored.},
doi = {10.1007/JHEP06(2017)103},
journal = {Journal of High Energy Physics (Online)},
number = 6,
volume = 2017,
place = {United States},
year = {Tue Jun 20 00:00:00 EDT 2017},
month = {Tue Jun 20 00:00:00 EDT 2017}
}

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Cited by: 2works
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