Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 66: Semiconductor Detectors: Radiation Hardness, new Materials and Concepts 2

T 66.9: Vortrag

Mittwoch, 23. März 2022, 18:15–18:30, T-H25

Physics case for a forward timing disc covering 3<η<4 of the CMS detector at HL-LHC — •Anna Albrecht¹, Anna Benecke², Andreas Hinzmann¹, Ben Kilminster³, and Stefanos Leontsinis³ — ¹Universität Hamburg — ²UC Louvain — ³University of Zurich

The LHC will be upgraded to a collider with 10 times higher luminosity, the high luminosity (HL)-LHC. One main challenge arising from the upcoming high luminosity, is the large amount of interactions that occur in one proton-proton bunch crossing, and therefore the separation of the interaction of interest from the additional ones (pileup). The insertion of a new timing layer in the upgraded CMS experiment is planned, to use timing as an additional discrimination variable between signal and pileup.

One interesting channel to probe at the HL-LHC is vector boson fusion (VBF) Higgs pair production that has two characteristic jets in the forward region of the detector. The separation of this signal from pileup is extremely challenging. In this physics case study, the performance of an extension of the timing layer from η < 3 to η < 4 is estimated by using the Delphes simulation software.