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    Bergauer, T.; Spanring, M.; Templ, S.; Chekhovsky, V.; Van Putte, S.; Van Mulders, P.; Clerbaux, B.; Moureaux, L.; Postiau, N.; Moraes, A.; Belchior Batista Das Chagas, E.; Novaes, S.F.; Ban, Y.; Lyu, X.; Starodumov, A.; Razis, P.A.; Jarry, P.; Lenzi, B.; Ahuja, S.; Kucher, I.; Asilar, E.; Eliseev, D.; Raspereza, A.; Maier, S.; Quast, G.; Kokkas, P.; Veres, G.I.; Maity, M.; Behera, S.C.; Nuzzo, S.; Selvaggi, G.; Borgonovi, L.; Giommi, L.; Benaglia, A.; Tabarelli de Fatis, T.; Sciacca, C.; Lanev, A.; Nikitenko, A.; Konstantinov, D.; Moran, D.; Sánchez Navas, S.; Duarte Campderros, J.; d'Enterria, D.; Fallavollita, F.; Pierini, M.; Van Onsem, G.P.; Niedziela, J.; Meiring, P.; Molinatti, U.; Ceard, L.; Akgun, B.; Brooke, J.J.; Newbold, D.M.; Borg, J.; Buchmuller, O.; Wardle, N.; Dittmann, J.; Wilson, J.; Perez, C.U.; Benelli, G.; Duh, Y.t.; Wong, W.Y.; Pellett, D.; Lam, T.; Schnaible, C.; Burt, K.; Karapostoli, G.; Cheng, Y.; Quach, D.; Albrow, M.; Apresyan, A.; Bauerdick, L.A.T.; Berryhill, J.; Hirschauer, J.; Mrenna, S.; O'Dell, V.; Uplegger, L.; Field, R.D.; Noonan, D.; Evdokimov, O.; Wang, X.; Alhusseini, M.; Bylinkin, A.; Feng, Y.; Brandt, S.; Harris, P.; Hansen, P.; Kubota, Y.; Acosta, J.G.; Wood, D.; Alimena, J.; Schulte, J.F.; Parashar, N.; Baty, A.; de Barbaro, P.; Somalwar, S.; Kamon, T.; Mueller, R.; Volobouev, I.; Joyce, M.

    Physics letters. B, 08/2021, Letnik: 819
    Journal Article

    A search for leptoquarks produced singly and in pairs in proton-proton collisions is presented. We consider the leptoquark (LQ) to be a scalar particle of charge −1/3e coupling to a top quark plus a tau lepton (tτ) or a bottom quark plus a neutrino (bν), or a vector particle of charge +2/3e, coupling to tν or bτ. These choices are motivated by models that can explain a series of anomalies observed in the measurement of B meson decays. In this analysis the signatures tτνb and tτν are probed, using data recorded by the CMS experiment at the CERN LHC at s=13 TeV and that correspond to an integrated luminosity of 137 fb−1. These signatures have not been previously explored in a dedicated search. The data are found to be in agreement with the standard model prediction. Lower limits at 95% confidence level are set on the LQ mass in the range 0.98–1.73 TeV, depending on the LQ spin and its coupling λ to a lepton and a quark, and assuming equal couplings for the two LQ decay modes considered. These are the most stringent constraints to date on the existence of leptoquarks in this scenario.