Search for long-lived particles decaying to leptons with large impact parameter in proton–proton collisions at s=13Te

• Published in: The European physical journal. C, Particles and fields Vol. 82; no. 2
• Main Authors: Krammer, N., Pitters, F. M., Templ, S., Darwish, M. R., Velde, C. Vander, Tytgat, M., Caputo, C., Chapon, E., Chen, G. M., Kapoor, A., Tani, L., Ochando, C., Chabert, E. C., Bernet, C., Donckt, M. Vander, Toriashvili, T., Fackeldey, P., Meyer, A., Cardini, A., Metwally, J., Walter, D., Connor, P., Kasieczka, G., Kyriakis, A., Sikler, F., Bansal, S., Dutta, S., Sarkar, S., Mishra, D. K., Khakzad, M., De Guio, F., Malberti, M., Bisello, D., Pazzini, J., Calzaferri, S., Ratti, S. P., Manca, E., Campana, M., Rovelli, C., Legger, F., Monteno, M., Staiano, A., Candelise, V., Oh, Y. D., Choi, M., Bluj, M., Golutvin, I., Lanev, A., Zhizhin, I., Ovtin, I., Skovpen, Y., Elumakhov, D., Ramos, J. P. Fernández, Trevisani, N., Gomez, G., Vila, I., Wickramarathna, D. D. C., Dharmaratna, W. G. D., Gouskos, L., Mallios, S., Sharma, A., Zeuner, W. D., Ristic, B., Liechti, S. P., Robmann, P., Kuo, C. M., Simsek, A. E., Tali, B., Ocalan, K., Özçelik, Ö., Zorbilmez, C., Brew, C., Linacre, J., Vojinovic, M., Kanuganti, A. R., Buccilli, A., Henderson, C., Gastler, D., Rohlf, J., Jensen, F., Gary, J. W., Gerosa, R., Guiang, J., Tadel, M., Incandela, J., Andrews, M. B., Paulini, M., Heller, R., Kwok, K. H. M., Guerrero, D., Butalla, S., Hangal, D. A., Wang, X., Rogan, C., Mitchell, T., Krohn, M., Tabb, W., Agarwal, G., Li, W., Huang, T.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.02.2022; Springer Nature B.V
• Subjects: Astronomy; Astrophysics and Cosmology; Collaboration; Elementary Particles; Hadrons; Heavy Ions; Large Hadron Collider; Leptons; Lifetime; Luminosity; Mathematical models; Measurement Science and Instrumentation; Muons; Nuclear Energy; Nuclear Physics; Parameters; Particle collisions; Particle decay; Particle physics; Physics; Physics and Astronomy; Protons; Quantum Field Theories; Quantum Field Theory; Quarks; Regular Article - Experimental Physics; Searching; Sensors; String Theory
• ISSN: 1434-6044; 1434-6052
• DOI: 10.1140/epjc/s10052-022-10027-3

A search for new long-lived particles decaying to leptons using proton–proton collision data produced by the CERN LHC at s = 13 Te is presented. Events are selected with two leptons (an electron and a muon, two electrons, or two muons) that both have transverse impact parameter values between 0.01 and 10 cm and are not required to form a common vertex. Data used for the analysis were collected with the CMS detector in 2016, 2017, and 2018, and correspond to an integrated luminosity of 118 (113) fb - 1 in the e e channel ( e μ and μ μ channels). The search is designed to be sensitive to a wide range of models with displaced e μ , e e , and μ μ final states. The results constrain several well-motivated models involving new long-lived particles that decay to displaced leptons. For some areas of the available phase space, these are the most stringent constraints to date.