What is a natural SUSY scenario?

Journal of High Energy Physics 2015.06 (2015): 070 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)

Bibliographic Details
Authors: Casas, J. Alberto, Moreno, Jesús M., Robles, Sandra, Rolbiecki, Krzysztof, Zaldívar, Bryan
Format: article
Publication Date:2015
Country:España
Institution:Universidad Autónoma de Madrid
Repository:Biblos-e Archivo. Repositorio Institucional de la UAM
Language:English
OAI Identifier:oai:repositorio.uam.es:10486/676633
Online Access:http://hdl.handle.net/10486/676633
https://dx.doi.org/10.1007/JHEP06(2015)070
Access Level:Open access
Keyword:Supersymmetry phenomenology
Física
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spelling What is a natural SUSY scenario?Casas, J. AlbertoMoreno, Jesús M.Robles, SandraRolbiecki, KrzysztofZaldívar, BryanSupersymmetry phenomenologyFísicaJournal of High Energy Physics 2015.06 (2015): 070 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)The idea of “Natural SUSY”, understood as a supersymmetric scenario where the fine-tuning is as mild as possible, is a reasonable guide to explore supersymmetric phenomenology. In this paper, we re-examine this issue in the context of the MSSM including several improvements, such as the mixing of the fine-tuning conditions for different soft terms and the presence of potential extra fine-tunings that must be combined with the electroweak one. We give tables and plots that allow to easily evaluate the fine-tuning and the corresponding naturalness bounds for any theoretical model defined at any high energy (HE) scale. Then, we analyze in detail the complete fine-tuning bounds for the unconstrained MSSM, defined at any HE scale. We show that Natural SUSY does not demand light stops. Actually, an average stop mass below 800 GeV is disfavored, though one of the stops might be very light. Regarding phenomenology, the most stringent upper bound from naturalness is the one on the gluino mass, which typically sets the present level fine tuning at O(1%). However, this result presents a strong dependence on the HE scale. E.g. if the latter is 107 GeV the level of fine-tuning is ∼ four times less severe. Finally, the most robust result of Natural SUSY is by far that Higgsinos should be rather light, certainly below 700 GeV for a fine-tuning of O(1%) or milder. Incidentally, this upper bound is not far from ≈1 TeV, which is the value required if dark matter is made of HiggsinosThis work has been partially supported by the MICINN, Spain, under contract FPA2010-17747, FPA2013-44773-P, Consolider-Ingenio CPAN CSD2007-00042, as well as MULTIDARK CSD2009-00064. We also thank the Spanish MINECO Centro de excelencia Severo Ochoa Program under grant SEV-2012-0249. B.Z. is supported by the IISN, an ULB-ARC grant and by the Belgian Federal Science Policy through the Interuniversity Attraction Pole P7/37, S.R. by Campus of Excellence UAM+CSIC and K.R. by Spanish Research Council (CSIC) within the JAE-Doc programSpringer VerlagSISSADepartamento de Física TeóricaFacultad de Ciencias20152015-06-11research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/676633https://dx.doi.org/10.1007/JHEP06(2015)070reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6766332026-06-23T12:46:27Z
dc.title.none.fl_str_mv What is a natural SUSY scenario?
title What is a natural SUSY scenario?
spellingShingle What is a natural SUSY scenario?
Casas, J. Alberto
Supersymmetry phenomenology
Física
title_short What is a natural SUSY scenario?
title_full What is a natural SUSY scenario?
title_fullStr What is a natural SUSY scenario?
title_full_unstemmed What is a natural SUSY scenario?
title_sort What is a natural SUSY scenario?
dc.creator.none.fl_str_mv Casas, J. Alberto
Moreno, Jesús M.
Robles, Sandra
Rolbiecki, Krzysztof
Zaldívar, Bryan
author Casas, J. Alberto
author_facet Casas, J. Alberto
Moreno, Jesús M.
Robles, Sandra
Rolbiecki, Krzysztof
Zaldívar, Bryan
author_role author
author2 Moreno, Jesús M.
Robles, Sandra
Rolbiecki, Krzysztof
Zaldívar, Bryan
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Física Teórica
Facultad de Ciencias
dc.subject.none.fl_str_mv Supersymmetry phenomenology
Física
topic Supersymmetry phenomenology
Física
description Journal of High Energy Physics 2015.06 (2015): 070 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-06-11
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/676633
https://dx.doi.org/10.1007/JHEP06(2015)070
url http://hdl.handle.net/10486/676633
https://dx.doi.org/10.1007/JHEP06(2015)070
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
SISSA
publisher.none.fl_str_mv Springer Verlag
SISSA
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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