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Higgs portals for thermal Dark Matter. EFT perspectives and the NMSSM
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. The Oskar Klein Centre for Cosmoparticle Physics, Department of PhysicsStockholm UniversityStockholmSweden.
2018 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, Vol. 2018, no 4, article id 69Article in journal (Refereed) Published
Abstract [en]

We analyze a low energy effective model of Dark Matter in which the thermal relic density is provided by a singlet Majorana fermion which interacts with the Higgs fields via higher dimensional operators. Direct detection signatures may be reduced if blind spot solutions exist, which naturally appear in models with extended Higgs sectors. Explicit mass terms for the Majorana fermion can be forbidden by a Z3 symmetry, which in addition leads to a reduction of the number of higher dimensional operators. Moreover, a weak scale mass for the Majorana fermion is naturally obtained from the vacuum expectation value of a scalar singlet field. The proper relic density may be obtained by the s-channel interchange of Higgs and gauge bosons, with the longitudinal mode of the Z boson (the neutral Goldstone mode) playing a relevant role in the annihilation process. This model shares many properties with the Next-to-Minimal Supersymmetric extension of the Standard Model (NMSSM) with light singlinos and heavy scalar and gauge superpartners. In order to test the validity of the low energy effective field theory, we compare its predictions with those of the ultraviolet complete NMSSM. Extending our framework to include Z3 neutral Majorana fermions, analogous to the bino in the NMSSM, we find the appearance of a new bino-singlino well tempered Dark Matter region. 

Place, publisher, year, edition, pages
Springer Verlag , 2018. Vol. 2018, no 4, article id 69
Keywords [en]
Beyond Standard Model, Cosmology of Theories beyond the SM, Effective Field Theories, Supersymmetric Effective Theories
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-227370DOI: 10.1007/JHEP04(2018)069ISI: 000430130300001Scopus ID: 2-s2.0-85045414213OAI: oai:DiVA.org:kth-227370DiVA, id: diva2:1212843
Note

Export Date: 9 May 2018; Article; Correspondence Address: Baum, S.; The Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, Alba Nova, Sweden; email: sbaum@fysik.su.se; Funding details: 638-2013-8993, Stiftung Oskar-Helene-Heim; Funding details: Wayne State University; Funding details: University of Chicago; Funding details: DOE, U.S. Department of Energy; Funding details: DE-AC02-07CH11359, Fermilab; Funding details: NRS, National Rosacea Society; Funding details: VR, Vetenskapsrådet; Funding details: SC, Office of Science; Funding details: Supreme Court of the United States; Funding details: HEP, High Energy Physics; Funding details: DE-AC02-06CH11357, DOE, U.S. Department of Energy; Funding details: NS, DOE, U.S. Department of Energy; Funding details: PHY-1607611, NSF, National Science Foundation; Funding details: ACP, Aspen Center for Physics; Funding text: We would like to thank Bibhushan Shakya for interesting discussions related to this work. SB acknowledges support from the Swedish Research Council (Vetenskapsrådet) through the Oskar Klein Centre (Contract No. 638-2013-8993). NRS is supported by Wayne State University. This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. Work at University of Chicago is supported in part by U.S. Department of; Funding text: Energy grant number DE-FG02-13ER41958. Work at ANL is supported in part by the U.S. Department of Energy under Contract No. DE-AC02-06CH11357. The work of MC, NS and CW was partially performed at the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-1607611. QC 20180604

Available from: 2018-06-04 Created: 2018-06-04 Last updated: 2018-06-04Bibliographically approved

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