Andreev, Yu. M.Banerjee, D.Oberhauser B., BantoBernhard, J.Bisio, P.Burtsev, V.E.Celentano, A.Charitonidis, N.Chumakov, A.G.Cooke, D.Crivelli, P.Depero, E.Dermenev, A.V.Donskov, S.V.Dusaev, R.R.Enik, T.Frolov, V.N.Gardikiotis, A.Gerassimov, S.G.Gninenko, S.N.Hösgen, M.Jeckel, M.Kachanov, V.A.Karneyeu, A.E.Kekelidze, G.Ketzer, B.Kirpichnikov, D.V.Kirsanov, M.M.Kolosov, V.N.Kovalenko, S.G.Kramarenko, V.A.Kravchuk, L.V.Krasnikov, N.V.Kuleshov, S.V.Lyubovitskij, V.E.Lysan, V.Marsicano, L.Matveev, V.A.Mikhailov, Yu. V.Molina Bueno, L.Peshekhonov, D.V.Polyakov, V.A.Radics, B.Rubbia, A.Samalantin, K.M.Samoylenko, V.D.Sieber, H.Shchukin, D.Soto, O.Tikhomirov, V.O.Tlisova, I.V.Toropin, A.N.Vasilishin, B.I.Volkov, P.V.Volkov, V. Yu.Voronchikhin, I.Zamora Saá, J.2023-06-232023-06-232022-10-14Physical Review Letters, Volume 129, Issue 16, 14 October 2022, Article number 1618010031-9007https://repositorio.unab.cl/xmlui/handle/ria/51038Indexación: Scopus.A search for a new Z′ gauge boson associated with (un)broken B-L symmetry in the keV-GeV mass range is carried out for the first time using the missing-energy technique in the NA64 experiment at the CERN SPS. From the analysis of the data with 3.22×1011 electrons on target collected during 2016-2021 runs, no signal events were found. This allows us to derive new constraints on the Z′-e coupling strength, which, for the mass range 0.3mZ′ 100 MeV, are more stringent compared to those obtained from the neutrino-electron scattering data. © 2022 authors. Published by the American Physical Society.enBosonsGagesGermanium alloysCoupling strengthsGauge bosonsMissing energyScattering dataStringentsElectron scatteringArtículoAttribution 4.0 International (CC BY 4.0)10.1103/PhysRevLett.129.161801