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CMS precision timing physics impact for the HL-LHC upgrade

Cerri, Olmo (2018) CMS precision timing physics impact for the HL-LHC upgrade. . (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20181203-153643129

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Abstract

As part of the Phase II upgrade program, the Compact Muon Solenoid (CMS) detector will incorporate a new timing layer designed to measure minimum ionizing particles (MIPs) with a time resolution of ∼30 ps. Precision timing will mitigate the impact of the challenging levels of pileup expected at the High Luminosity LHC. The time information assigned to each track will enable the use of 4D-vertexing which will render a 5-fold pile-up reduction, thus recovering the current conditions. Precision timing will also enable new time-based isolations and improved b-tagging algorithms. All of this translates into a ∼20% gain in effective luminosity when looking at di-Higgs boson events decaying to a pair of b-quarks and two photons. We present the expected improvements in physics performance with precision timing with the upgraded CMS detector.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
https://arxiv.org/abs/1810.00860arXivDiscussion Paper
Additional Information:Work supported by funding from California Institute of Technology High Energy Physics under Contract de-sc0011925 with the United States Department of Energy.
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0011925
Record Number:CaltechAUTHORS:20181203-153643129
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181203-153643129
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91409
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:03 Dec 2018 23:44
Last Modified:03 Dec 2018 23:44

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