Show simple item record

dc.contributor.authorRandall, Lisa
dc.contributor.authorReece, Matthew
dc.date.accessioned2014-06-05T18:35:00Z
dc.date.issued2013
dc.identifier.citationRandall, Lisa, and Matthew Reece. 2013. “Single-Scale Natural SUSY.” J. High Energ. Phys. 2013 (8) (August).en_US
dc.identifier.issn1029-8479en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:12249601
dc.description.abstractWe consider the prospects for natural SUSY models consistent with current data. Recent constraints make the standard paradigm unnatural so we consider what could be a minimal extension consistent with what we now know. The most promising such scenarios extend the MSSM with new tree-level Higgs interactions that can lift its mass to at least 125 GeV and also allow for flavor-dependent soft terms so that the third generation squarks are lighter than current bounds on the first and second generation squarks. We argue that a common feature of almost all such models is the need for a new scale near 10 TeV, such as a scale of Higgsing or confinement of a new gauge group. We consider the question whether such a model can naturally derive from a single mass scale associated with supersymmetry breaking. Most such models simply postulate new scales, leaving their proximity to the scale of MSSM soft terms a mystery. This coincidence problem may be thought of as a mild tuning, analogous to the usual μ problem. We find that a single mass scale origin is challenging, but suggest that a more natural origin for such a new dynamical scale is the gravitino mass, m 3/2, in theories where the MSSM soft terms are a loop factor below m 3/2. As an example, we build a variant of the NMSSM where the singlet S is composite, and the strong dynamics leading to compositeness is triggered by masses of order m 3/2 for some fields. Our focus is the Higgs sector, but our model is compatible with a light stop (either with the first and second generation squarks heavy, or with R-parity violation or another mechanism to hide them from current searches). All the interesting low-energy mass scales, including linear terms for S playing a key role in EWSB, arise dynamically from the single scale m 3/2. However, numerical coefficients from RG effects and wavefunction factors in an extra dimension complicate the otherwise simple story.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherSpringer Science + Business Mediaen_US
dc.relation.isversionofdoi:10.1007/jhep08(2013)088en_US
dc.relation.hasversionhttp://arxiv.org/pdf/1206.6540v2.pdfen_US
dash.licenseOAP
dc.subjectBeyond Standard Modelen_US
dc.subjectSupersymmetric Standard Modelen_US
dc.subjectSupersymmetric Effective Theoriesen_US
dc.titleSingle-scale natural SUSYen_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalJournal of High Energy Physicsen_US
dash.depositing.authorReece, Matthew
dc.date.available2014-06-05T18:35:00Z
dc.identifier.doi10.1007/jhep08(2013)088*
dash.contributor.affiliatedRandall, Lisa
dash.contributor.affiliatedReece, Matthew


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record