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NA64 status report 2023

In this report, we summarise the 2016-2022 combined analysis on A$'\rightarrow$invisible searches with 9.37$\times10^{11}$ electrons on target. With such statistics, NA64 started probing for the first time the well-motivated region of parameter space suggested by benchmark light Dark Matter mod...

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Detalles Bibliográficos
Autores principales: Molina Bueno, Laura, Crivelli, Paolo, NA64 collaboration, The
Publicado: 2023
Materias:
Acceso en línea:http://cds.cern.ch/record/2868332
Descripción
Sumario:In this report, we summarise the 2016-2022 combined analysis on A$'\rightarrow$invisible searches with 9.37$\times10^{11}$ electrons on target. With such statistics, NA64 started probing for the first time the well-motivated region of parameter space suggested by benchmark light Dark Matter models, thus making further searches extremely exciting and important. In addition, the experiment has significantly extended its physics potential exploiting the use of positrons and muons beams. This year, we present the first results obtained at H4 using 100 GeV positrons and at M2 using 160 GeV muons. Both techniques would allow to improve the LDM sensitivity at higher dark photon masses. Finally, we will also report on the two runs carried out in 2023 at H4 and M2 beam lines and conclude with an overview of our plans for the next year.