Gluino reach and mass extraction at the LHC in radiatively-driven natural SUSY

Baer, Howard A.; Barger, Vernon; Gainer, James S.; Huang, Peisi; Savoy, Michael; Sengupta, Dibyashree; Tata, Xerxes

doi:10.1140/epjc/s10052-017-5067-3

Gluino reach and mass extraction at the LHC in radiatively-driven natural SUSY

Journal Article · Thu Jul 27 00:00:00 EDT 2017 · European Physical Journal. C, Particles and Fields

DOI:https://doi.org/10.1140/epjc/s10052-017-5067-3· OSTI ID:1777469

^[1]; Barger, Vernon ^[2]; Gainer, James S. ^[3]; Huang, Peisi ^[4]; Savoy, Michael ^[5]; Sengupta, Dibyashree ^[5]; Tata, Xerxes ^[3]

Univ. of Oklahoma, Norman, OK (United States); University of Oklahoma
Univ. of Wisconsin, Madison, WI (United States)
Univ. of Hawaii, Honolulu, HI (United States)
Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Texas A & M Univ., College Station, TX (United States)
Univ. of Oklahoma, Norman, OK (United States)

Radiatively-driven natural SUSY (RNS) models enjoy electroweak naturalness at the 10% level while respecting LHC sparticle and Higgs mass constraints. Gluino and top-squark masses can range up to several TeV (with other squarks even heavier) but a set of light Higgsinos are required with mass not too far above mh ~ 125 GeV. Within the RNS framework, gluinos dominantly decay via g˜ → tt ˜*₁, t ¯t ˜ ₁→ tt ¯Z_1,2 or tb¯W-₁ + c.c., where the decay products of the higgsino-like W^~₁ and Z^~₂ are very soft. Gluino pair production is, therefore, signaled by events with up to four hard b-jets and large E_T. We devise a set of cuts to isolate a relatively pure gluino sample at the (high-luminosity) LHC and show that in the RNS model with very heavy squarks, the gluino signal will be accessible for m_g˜ < 2400 (2800) GeV for an integrated luminosity of 300 (3000) fb^-1. We also show that the measurement of the rate of gluino events in the clean sample mentioned above allows for a determination of m_g˜ with a statistical precision of 2–5% (depending on the integrated luminosity and the gluino mass) over the range of gluino masses where a 5σ discovery is possible at the LHC.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Oklahoma, Norman, OK (United States)

Sponsoring Organization:: National Science Foundation; USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0009956

OSTI ID:: 1777469

Alternate ID(s):: OSTI ID: 22630600

Report Number(s):: arXiv:1612.00795

Journal Information:: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 7 Vol. 77; ISSN 1434-6044

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Exploration of the MSSM with Non-Universal Higgs Masses Ellis, J.; Falk, T.; Olive, K. A. arXiv https://doi.org/10.48550/arxiv.hep-ph/0210205	text	January 2002
Supersymmetric Higgs and Radiative Electroweak breaking Ibanez, L. E.; Ross, G. G. arXiv https://doi.org/10.48550/arxiv.hep-ph/0702046	text	January 2007
Naturalness Constraints in Supersymmetric Theories with Non-Universal Soft Terms Dimopoulos, S.; Giudice, G. F. arXiv https://doi.org/10.48550/arxiv.hep-ph/9507282	text	January 1995
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations Alwall, J.; Frederix, R.; Frixione, S. Springer https://doi.org/10.5167/uzh-107572	text	January 2014

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Higgs and superparticle mass predictions from the landscape Baer, Howard; Barger, Vernon; Serce, Hasan Journal of High Energy Physics, Vol. 2018, Issue 3 https://doi.org/10.1007/jhep03(2018)002	journal	March 2018
LHC SUSY and WIMP dark matter searches confront the string theory landscape Baer, Howard; Barger, Vernon; Salam, Shadman Journal of High Energy Physics, Vol. 2019, Issue 4 https://doi.org/10.1007/jhep04(2019)043	journal	April 2019
Natural SUSY at LHC with right-sneutrino LSP Chatterjee, Arindam; Dutta, Juhi; Rai, Santosh Kumar Journal of High Energy Physics, Vol. 2018, Issue 6 https://doi.org/10.1007/jhep06(2018)042	journal	June 2018
Study of dark matter physics in non-universal gaugino mass scenario Kawamura, Junichiro; Omura, Yuji Journal of High Energy Physics, Vol. 2017, Issue 8 https://doi.org/10.1007/jhep08(2017)072	journal	August 2017
ILC as a natural SUSY discovery machine and precision microscope: From light Higgsinos to tests of unification Baer, Howard; Berggren, Mikael; Fujii, Keisuke Physical Review D, Vol. 101, Issue 9 https://doi.org/10.1103/physrevd.101.095026	journal	May 2020
Aspects of the same-sign diboson signature from wino pair production with light higgsinos at the high luminosity LHC Baer, Howard; Barger, Vernon; Gainer, James S. Physical Review D, Vol. 97, Issue 3 https://doi.org/10.1103/physrevd.97.035012	journal	February 2018
LHC luminosity and energy upgrades confront natural supersymmetry models Baer, Howard; Barger, Vernon; Gainer, James S. Physical Review D, Vol. 98, Issue 7 https://doi.org/10.1103/physrevd.98.075010	journal	October 2018
Naturalness versus stringy naturalness with implications for collider and dark matter searches Baer, Howard; Barger, Vernon; Salam, Shadman Physical Review Research, Vol. 1, Issue 2 https://doi.org/10.1103/physrevresearch.1.023001	journal	September 2019
The ILC as a natural SUSY discovery machine and precision microscope: from light higgsinos to tests of unification Baer, Howard; Berggren, Mikael; Fujii, Keisuke Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-05231	text	January 2019
Aspects of the same-sign diboson signature from wino pair production with light higgsinos at the high luminosity LHC Baer, Howard; Barger, Vernon; Gainer, James S. arXiv https://doi.org/10.48550/arxiv.1710.09103	text	January 2017
LHC luminosity and energy upgrades confront natural supersymmetry models Baer, Howard; Barger, Vernon; Gainer, James S. arXiv https://doi.org/10.48550/arxiv.1808.04844	text	January 2018
The ILC as a natural SUSY discovery machine and precision microscope: from light higgsinos to tests of unification Baer, Howard; Berggren, Mikael; Fujii, Keisuke arXiv https://doi.org/10.48550/arxiv.1912.06643	text	January 2019

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