Shining light into the Higgs portal with γγ colliders
| Autor: | García-Abenza, Adrián, No, J.M. |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission, Ministerio de Ciencia, Innovación y Universidades (España), SCOAP, No, J. M. [0000-0002-1321-8960], No, J. M. |
| Rok vydání: | 2022 |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | 10 pags., 8 figs., 2 tabs. High-energy γγ colliders constitute a potential running mode of future lepton colliders such as the ILC and CLIC. We study the sensitivity of a high-energy γγ collider to the Higgs portal scenario to a hidden sector above the invisible Higgs decay threshold. We show that such γγ collisions could allow to probe the existence of dark sectors through the Higgs portal with precision competitive with other planned collider facilities, profiting from the unique combination of sizable cross-section with clean final state and collider environment. In addition, this search could cover the singlet Higgs portal parameter space yielding a first-order electroweak phase transition in the early Universe. J. M. N. was supported by Ramón y Cajal Fellowship contract RYC-2017-22986, and also acknowledges support from the Spanish MINECO’s “Centro de Excelencia Severo Ochoa” Programme under grant SEV-2016-0597, from the European Union’s Horizon 2020 research and innovation programme under the Marie SklodowskaCurie grant agreement 860881 (ITN HIDDeN) and from the Spanish Proyectos de I+D de Generación de Conocimiento via grant PGC2018-096646-A-I00. A. G.-A. thanks the MICIU, for his grant within the “Garantía Juvenil” program |
| Databáze: | OpenAIRE |
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