title: Likelihood analysis of supersymmetric SU(5) GUTs.
abstract: We perform a likelihood analysis of the constraints from accelerator experiments and astrophysical observations on supersymmetric (SUSY) models with SU(5) boundary conditions on soft SUSY-breaking parameters at the GUT scale. The parameter space of the models studied has seven parameters: a universal gaugino mass [Formula: see text], distinct masses for the scalar partners of matter fermions in five- and ten-dimensional representations of SU(5), [Formula: see text] and [Formula: see text], and for the [Formula: see text] and [Formula: see text] Higgs representations [Formula: see text] and [Formula: see text], a universal trilinear soft SUSY-breaking parameter [Formula: see text], and the ratio of Higgs vevs [Formula: see text]. In addition to previous constraints from direct sparticle searches, low-energy and flavour observables, we incorporate constraints based on preliminary results from 13 TeV LHC searches for jets + [Formula: see text] events and long-lived particles, as well as the latest PandaX-II and LUX searches for direct Dark Matter detection. In addition to previously identified mechanisms for bringing the supersymmetric relic density into the range allowed by cosmology, we identify a novel [Formula: see text] coannihilation mechanism that appears in the supersymmetric SU(5) GUT model and discuss the role of [Formula: see text] coannihilation. We find complementarity between the prospects for direct Dark Matter detection and SUSY searches at the LHC.
authors.affiliation: DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: E
authors.identifier: 0000-0002-6827-5022
authors.initials: E
authors.lastname: Bagnaschi
authors.affiliation: High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK.
authors.forename: J C
authors.initials: JC
authors.lastname: Costa
authors.affiliation: Department of Physics, Institute for Particle Physics Phenomenology, University of Durham, Science Laboratories, South Road, Durham, DH1 3LE UK.|Faculty of Physics, Institute of Theoretical Physics, University of Warsaw, ul. Pasteura 5, 02-093 Warsaw, Poland.
authors.forename: K
authors.initials: K
authors.lastname: Sakurai
authors.affiliation: Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Borsato
authors.affiliation: High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK.
authors.forename: O
authors.initials: O
authors.lastname: Buchmueller
authors.affiliation: Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 USA.|Physics Department, University of Illinois at Chicago, Chicago, IL 60607-7059 USA.
authors.forename: R
authors.initials: R
authors.lastname: Cavanaugh
authors.affiliation: Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain.
authors.forename: V
authors.initials: V
authors.lastname: Chobanova
authors.affiliation: High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK.
authors.forename: M
authors.initials: M
authors.lastname: Citron
authors.affiliation: Experimental Physics Department, CERN, 1211 Geneva 23, Switzerland.|Antwerp University, 2610 Wilrijk, Belgium.
authors.forename: A
authors.initials: A
authors.lastname: De Roeck
authors.affiliation: ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, University of Melbourne, Parkville, 3010 Australia.
authors.forename: M J
authors.initials: MJ
authors.lastname: Dolan
authors.affiliation: Theoretical Particle Physics and Cosmology Group, Department of Physics, King's College London, London, WC2R 2LS UK.|Theoretical Physics Department, CERN, 1211 Geneva 23, Switzerland.
authors.forename: J R
authors.initials: JR
authors.lastname: Ellis
authors.affiliation: H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL UK.
authors.forename: H
authors.initials: H
authors.lastname: Flächer
authors.affiliation: Campus of International Excellence UAM+CSIC, Cantoblanco, 28049 Madrid, Spain.|Instituto de Física Teórica UAM-CSIC, C/Nicolas Cabrera 13-15, 28049 Madrid, Spain.|Instituto de Física de Cantabria (CSIC-UC), Avda. de Los Castros s/n, 39005 Santander, Spain.
authors.forename: S
authors.initials: S
authors.lastname: Heinemeyer
authors.affiliation: Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland.
authors.forename: G
authors.initials: G
authors.lastname: Isidori
authors.affiliation: Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Lucio
authors.affiliation: Universidade de Santiago de Compostela, 15706 Santiago de Compostela, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Martínez Santos
authors.affiliation: William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Olive
authors.affiliation: High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK.
authors.forename: A
authors.initials: A
authors.lastname: Richards
authors.affiliation: High Energy Physics Group, Blackett Laboratory, Imperial College, Prince Consort Road, London, SW7 2AZ UK.
authors.forename: K J
authors.initials: KJ
authors.lastname: de Vries
authors.affiliation: DESY, Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Weiglein