Search for resonant and nonresonant new phenomena in high-mass dilepton final states at s = 13 TeV

A bstract A search is presented for physics beyond the standard model (SM) using electron or muon pairs with high invariant mass. A data set of proton-proton collisions collected by the CMS experiment at the LHC at s = 13 TeV from 2016 to 2018 corresponding to a total integrated luminosity of up to...

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Vydáno v:	The journal of high energy physics Ročník 2021; číslo 7
Hlavní autoři:	Andrejkovic, J. W., Pitters, F. M., Schieck, J., Templ, S., Darwish, M. R., Thomas, L., Niedziela, M., David, P., Prisciandaro, J., Vischia, P., Avila, C., Brigljevic, V., Finger, M., Dewanjee, R. K., Hamel de Monchenault, G., Falmagne, G., Lobanov, A., Apparu, D., Fischer, B., Asmuss, P., Fröhlich, A., Schleper, P., Hartmann, F., Daskalakis, G., Garg, R. B., Priyanka, P., Bharti, M., Kumar, S., Cavallo, F. R., Guiducci, L., Latino, G., Simonetto, F., Zanetti, M., Lariccia, P., Menichelli, M., Pandolfi, F., Salvatico, R., Casarsa, M., Hoorani, H. R., Górski, M., Hollar, J., Voytishin, N., Epshteyn, V., Danilov, M., Terkulov, A., Blinov, V., Uzunian, A., Alcaraz Maestre, J., Chhibra, S. S., Fasanella, D., Sakulin, H., Van Onsem, G. P., Dissertori, G., Mikuni, V. M., Neutelings, I., Reimers, A., Onengut, G., Goldstein, J., Stylianou, N., Belyaev, A., McMaster, B., Yu, D., Branson, J. G., Deelen, N., Richman, J., Vorobiev, I., Quach, D., Banerjee, S., Grünendahl, S., Klabbers, P., McBride, P., Merkel, P., Acosta, D., Avery, P., Rosenzweig, D., Shi, K., Khristenko, V., Moeller, A., Bean, A., Royon, C., Eno, S. C., Shi, Z., Jain, Sh, Oliveros, S., Bryson, M., Claes, D. R., Hay, L., Hildreth, M., Mohrman, K., Addesa, F. M., Norberg, S., Yang, M., Freed, S., Ranken, E., Hughes, E., Acharya, H., Luo, S., Bose, T., Pinna, D., Vetens, W.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Berlin/Heidelberg Springer Berlin Heidelberg 27.07.2021 Springer Nature B.V
Témata:	Classical and Quantum Gravitation Collaboration Dark matter Deviation Elementary Particles Fermions Flavor (particle physics) Gravitons High energy physics Large Hadron Collider Leptons Luminosity Mass spectra Particle collisions Particle physics Particle spin Physics Physics and Astronomy Protons Quantum Field Theories Quantum Field Theory Quantum Physics Regular Article - Experimental Physics Relativity Theory Sensors Solenoids Standard model (particle physics) String Theory Particle and resonance production Beyond Standard Model Hadron-Hadron scattering (experiments) Lepton production
ISSN:	1029-8479
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Popis
Shrnutí:	A bstract A search is presented for physics beyond the standard model (SM) using electron or muon pairs with high invariant mass. A data set of proton-proton collisions collected by the CMS experiment at the LHC at s = 13 TeV from 2016 to 2018 corresponding to a total integrated luminosity of up to 140 fb − 1 is analyzed. No significant deviation is observed with respect to the SM background expectations. Upper limits are presented on the ratio of the product of the production cross section and the branching fraction to dileptons of a new narrow resonance to that of the Z boson. These provide the most stringent lower limits to date on the masses for various spin-1 particles, spin-2 gravitons in the Randall-Sundrum model, as well as spin-1 mediators between the SM and dark matter particles. Lower limits on the ultraviolet cutoff parameter are set both for four-fermion contact interactions and for the Arkani-Hamed, Dimopoulos, and Dvali model with large extra dimensions. Lepton flavor universality is tested at the TeV scale for the first time by comparing the dimuon and dielectron mass spectra. No significant deviation from the SM expectation of unity is observed.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14
ISSN:	1029-8479
DOI:	10.1007/JHEP07(2021)208