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NMSSM Higgs boson search strategies at the LHC and the mono-Higgs signature in particular
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Stockholm University, Sweden.
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. University of Michigan, United States; Stockholm University, Sweden.
2017 (English)In: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 95, no 11, article id 115036Article in journal (Refereed) Published
Abstract [en]

We study the collider phenomenology of the extended Higgs sector of the next-to-minimal supersymmetric Standard Model (NMSSM). The region of NMSSM parameter space favored by a 125 GeV SM-like Higgs and naturalness generically features a light Higgs and neutralino spectrum as well as a large O(1) coupling between the Higgs doublets and the NMSSM singlet fields. In such regimes, the heavier Higgs bosons can decay dominantly into lighter Higgs bosons and neutralinos. We study the prospects of observing such decays at the 13 TeV LHC, focusing on mono-Higgs signatures as probes of such regions of parameter space. We present results for the mono-Higgs reach in a framework easily applicable to other models featuring similar decay topologies. In the NMSSM, we find that the mono-Higgs channel can probe TeV scale Higgs bosons and has sensitivity even in the low tanĪ², large mA regime that is difficult to probe in the MSSM. Unlike for many conventional Higgs searches, the reach of the mono-Higgs channel will improve significantly with the increased luminosity expected to be collected at the LHC in the ongoing and upcoming runs.

Place, publisher, year, edition, pages
American Physical Society , 2017. Vol. 95, no 11, article id 115036
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-216466DOI: 10.1103/PhysRevD.95.115036ISI: 000404472700009Scopus ID: 2-s2.0-85022338239OAI: oai:DiVA.org:kth-216466DiVA, id: diva2:1162034
Note

Funding details: ACP, Aspen Center for Physics; Funding details: PHY-1066293, NSF, National Science Foundation; Funding details: U-M, University of Michigan; Funding details: UC, University of Cincinnati; Funding text: K.F. and S.B. acknowledge support from the Swedish Research Council (Vetenskapsrdet) through the Oskar Klein Centre (Contract No. 638-2013-8993). K.F. and B.S. acknowledge support from DoE Grant No. DE-SC007859 at the University of Michigan. B.S. also acknowledges support from the University of Cincinnati. N.R.S. is supported by Wayne State University. S.B. would like to thank the University of Michigan and Wayne State University, where part of this work was conducted, for hospitality. This work was performed in part at the Aspen Center for Physics, which is supported by National Science Foundation Grant No. PHY-1066293. B.S. also thanks the CERN Theory Group, where part of this work was conducted, for hospitality.

QC 201712101

Available from: 2017-12-01 Created: 2017-12-01 Last updated: 2017-12-01Bibliographically approved

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