{"title":"Search for Dark Matter Particles Predicted by the Scalar Portal Model with a Two-Doublet Expansion of Higgs Sector and One Extra Singlet","authors":"M. V. Savina, K. V. Slizhevskii, S. V. Shmatov","doi":"10.1134/S1063779624701612","DOIUrl":null,"url":null,"abstract":"<p>The paper presents an overview of search results for dark matter (DM) candidate particles in DM scalar portal models at the Large Hadron Collider. Calculations of cross sections of DM particle production are presented for the process of associated DM production with a gauge <i>Z</i><sup>0</sup> boson in a model with a two-doublet Higgs sector containing an additional scalar or pseudoscalar. It is shown that when analyzing the data of proton–proton collisions at an energy in the center-of-mass system of 13 TeV with a corresponding integrated luminosity of 137 fb<sup>−1</sup>, collected by CMS experiment at the LHC in 2016–2018, no significant excess of the expected signal over the background predicted by the standard model is observed. Constraints on the parameter space of (2HDM+a) scalar portal model obtained by CMS during the LHC second run (Run 2) and prospects for the third run are discussed.</p>","PeriodicalId":729,"journal":{"name":"Physics of Particles and Nuclei","volume":"56 2","pages":"340 - 345"},"PeriodicalIF":0.6000,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Particles and Nuclei","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063779624701612","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, PARTICLES & FIELDS","Score":null,"Total":0}
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Abstract
The paper presents an overview of search results for dark matter (DM) candidate particles in DM scalar portal models at the Large Hadron Collider. Calculations of cross sections of DM particle production are presented for the process of associated DM production with a gauge Z0 boson in a model with a two-doublet Higgs sector containing an additional scalar or pseudoscalar. It is shown that when analyzing the data of proton–proton collisions at an energy in the center-of-mass system of 13 TeV with a corresponding integrated luminosity of 137 fb−1, collected by CMS experiment at the LHC in 2016–2018, no significant excess of the expected signal over the background predicted by the standard model is observed. Constraints on the parameter space of (2HDM+a) scalar portal model obtained by CMS during the LHC second run (Run 2) and prospects for the third run are discussed.
期刊介绍：
The journal Fizika Elementarnykh Chastits i Atomnogo Yadr of the Joint Institute for Nuclear Research (JINR, Dubna) was founded by Academician N.N. Bogolyubov in August 1969. The Editors-in-chief of the journal were Academician N.N. Bogolyubov (1970–1992) and Academician A.M. Baldin (1992–2001). Its English translation, Physics of Particles and Nuclei, appears simultaneously with the original Russian-language edition. Published by leading physicists from the JINR member states, as well as by scientists from other countries, review articles in this journal examine problems of elementary particle physics, nuclear physics, condensed matter physics, experimental data processing, accelerators and related instrumentation ecology and radiology.
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