Searches for additional Higgs bosons and for vector leptoquarks in ττ final states in proton-proton collisions at s = 13 TeV

Journal
Journal of High Energy Physics
Date Issued
2023-07-01
Author(s)
Tumasyan, A.
Adam, W.
Andrejkovic, J. W.
Bergauer, T.
Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Escalante Del Valle, A.
Hussain, P. S.
Jeitler, M.
Krammer, N.
Lechner, L.
Liko, D.
Mikulec, I.
Paulitsch, P.
Pitters, F. M.
Schieck, J.
Schöfbeck, R.
Schwarz, D.
Templ, S.
Waltenberger, W.
Wulz, C. E.
Darwish, M. R.
Janssen, T.
Kello, T.
Rejeb Sfar, H.
Van Mechelen, P.
Bols, E. S.
D’Hondt, J.
De Moor, A.
Delcourt, M.
El Faham, H.
Lowette, S.
Moortgat, S.
Morton, A.
Müller, D.
Sahasransu, A. R.
Tavernier, S.
Van Doninck, W.
Vannerom, D.
Clerbaux, B.
De Lentdecker, G.
Favart, L.
Hohov, D.
Jaramillo, J.
Lee, K.
Mahdavikhorrami, M.
Makarenko, I.
Malara, A.
Paredes, S.
Pétré, L.
Postiau, N.
Starling, E.
Thomas, L.
Vanden Bemden, M.
Vander Velde, C.
Vanlaer, P.
Dobur, D.
Knolle, J.
Lambrecht, L.
Mestdach, G.
Niedziela, M.
Rendón, C.
Roskas, C.
Samalan, A.
Skovpen, K.
Tytgat, M.
Van Den Bossche, N.
Vermassen, B.
Wezenbeek, L.
Benecke, A.
Bruno, G.
Bury, F.
Caputo, C.
David, P.
Delaere, C.
Donertas, I. S.
Giammanco, A.
Jaffel, K.
Jain, Sa
Lemaitre, V.
Mondal, K.
Prisciandaro, J.
Taliercio, A.
Tran, T. T.
Vischia, P.
Wertz, S.
Alves, G. A.
Coelho, E.
Hensel, C.
Moraes, A.
Rebello Teles, P.
Aldá Júnior, W. L.
Alves Gallo Pereira, M.
Barroso Ferreira Filho, M.
Brandao Malbouisson, H.
Carvalho, W.
Chinellato, J.
Da Costa, E. M.
Da Silveira, G. G.
DOI
Abstract
Three searches are presented for signatures of physics beyond the standard model (SM) in ττ final states in proton-proton collisions at the LHC, using a data sample collected with the CMS detector at s = 13 TeV, corresponding to an integrated luminosity of 138 fb−1. Upper limits at 95% confidence level (CL) are set on the products of the branching fraction for the decay into τ leptons and the cross sections for the production of a new boson ϕ, in addition to the H(125) boson, via gluon fusion (ggϕ) or in association with b quarks, ranging from O(10 pb) for a mass of 60 GeV to 0.3 fb for a mass of 3.5 TeV each. The data reveal two excesses for ggϕ production with local p-values equivalent to about three standard deviations at mϕ = 0.1 and 1.2 TeV. In a search for t-channel exchange of a vector leptoquark U1, 95% CL upper limits are set on the dimensionless U1 leptoquark coupling to quarks and τ leptons ranging from 1 for a mass of 1 TeV to 6 for a mass of 5 TeV, depending on the scenario. In the interpretations of the Mh125 and Mh,EFT125 minimal supersymmetric SM benchmark scenarios, additional Higgs bosons with masses below 350 GeV are excluded at 95% CL.
Volume
2023
Subjects