Search for new physics in the τ lepton plus missing transverse momentum final state in proton-proton collisions at √s=13 TeV
A search for physics beyond the standard model (SM) in the final state with a hadronically decaying tau lepton and a neutrino is presented. This analysis is based on data recorded by the CMS experiment from proton-proton collisions at a center-of-mass energy of 13TeV at the LHC, corresponding to a total integrated luminosity of 138 fb(-1). The transverse mass spectrum is analyzed for the presence of new physics. No significant deviation from the SM prediction is observed. Limits are set on the production cross section of a W' boson decaying into a tau lepton and a neutrino. Lower limits are set on the mass of the sequential SM-like heavy charged vector boson and the mass of a quantum black hole. Upper limits are placed on the couplings of a new boson to the SM fermions. Constraints are put on a nonuniversal gauge interaction model and an effective field theory model. For the first time, upper limits on the cross section of t-channel leptoquark (LQ) exchange are presented. These limits are translated into exclusion limits on the LQ mass and on its coupling in the t-channel. The sensitivity of this analysis extends into the parameter space of LQ models that attempt to explain the anomalies observed in B meson decays. The limits presented for the various interpretations are the most stringent to date. Additionally, a model-independent limit is provided.
WOS:001090971800001
2023-09-08
9
051
REVIEWED
Funder | Grant Number |
Marie-Curie program (European Union) | |
European Research Council (European Union) | |
Horizon 2020 Grant (European Union) | 675440 |
COST Action (European Union) | CA16108 |
Alfred P. Sloan Foundation | |
Alexander von Humboldt Foundation | |
Belgian Federal Science Policy Office | |
Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium) | |
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium) | |
F.R.S.-FNRS under the "Excellence of Science -EOS" -be.h project | 30820817 |
FWO (Belgium) under the "Excellence of Science -EOS" -be.h project | 30820817 |
Beijing Municipal Science & Technology Commission | Z191100007219010 |
Ministry of Education, Youth and Sports (MEYS) of the Czech Republic | |
Hellenic Foundation for Research and Innovation (HFRI) (Greece) | 2288 |
Deutsche Forschungsgemeinschaft (DFG) | EXC 2121 |
Hungarian Academy of Sciences (Hungary) | |
New National Excellence Program -UNKP (Hungary) | |
NKFIH (Hungary) | K 124845 |
Council of Science and Industrial Research, India | |
Latvian Council of Science | |
Ministry of Education and Science (Poland) | 2022/WK/14 |
National Science Center (Poland) | Opus 2021/41/B/ST2/01369 |
Fundacao para a Ciencia e a Tecnologia (Portugal) | CEECIND/01334/2018 |
National Priorities Research Program by Qatar National Research Fund (Spain) | |
MCIN/AEI (Spain) | |
ERDF "a way of making Europe" (Spain) | |
Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu (Spain) | MDM-2017-0765 |
Programa Severo Ochoa del Principado de Asturias (Spain) | |
Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand) | |
National Science, Research and Innovation Fund via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation (Thailand) | B05F650021 |
Kavli Foundation | |
Nvidia Corporation | |
SuperMicro Corporation | |
Welch Foundation | C-1845 |
Weston Havens Foundation (U.S.A.) | |