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arxiv: 2207.09979 · v2 · pith:NGXEFCP3new · submitted 2022-07-20 · ✦ hep-ex · hep-ph

Search for a New B-L Z' Gauge Boson with the NA64 Experiment at CERN

Yu. M. Andreev , D. Banerjee , B. Banto-Oberhauser , J. Bernhard , P. Bisio , M. Bondi , V. Burtsev , A. Celentano
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N. Charitonidis A. G. Chumakov D. Cooke P. Crivelli E. Depero A. V. Dermenev S. V. Donskov R. R. Dusaev T. Enik V. N. Frolov A. Gardikiotis S. G. Gerassimov S. N. Gninenko M. Hosgen M. Jeckel V. A. Kachanov A. E. Karneyeu G. D. Kekelidze B. Ketzer D. V. Kirpichnikov M. M. Kirsanov V. N. Kolosov S. G. Kovalenko V. A. Kramarenko L. V. Kravchuk N. V. Krasnikov S. V. Kuleshov V. E. Lyubovitskij V. Lysan L. Marsicano V. A. Matveev Yu. V. Mikhailov L. Molina Bueno D. V. Peshekhonov V. A. Polyakov B. Radics A. Rubbia K. Salamatin V. D. Samoylenko H. Sieber D. Shchukin O. Soto V. O. Tikhomirov I. Tlisova A. N. Toropin B. I. Vasilishin P. V. Volkov V. Yu. Volkov I. Voronchikhin J. Zamora-Saa
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classification ✦ hep-ex hep-ph
keywords bosoncerndataexperimentgaugemassna64range
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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 3.22e11 electrons on target collected during 2016-2021 runs no signal events were found. This allows to derive new constraints on the $Z'-e$ coupling strength, which for the mass range $0.3 < m_{Z'} < 100$ MeV are more stringent compared to those obtained from the neutrino-electron scattering data.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Improved limits on a new $Z'$ in $B-L$ scenarios with the NA64 experiment at CERN

    hep-ex 2026-06 unverdicted novelty 4.0

    NA64 reports improved upper limits on g_{B-L} for sub-GeV Z' masses using resonant production and invisible decay channels from a dataset three times larger than prior analyses.

  2. Improved limits on a new $Z'$ in $B-L$ scenarios with the NA64 experiment at CERN

    hep-ex 2026-06 unverdicted novelty 3.0

    NA64 sets improved upper limits on g_{B-L} for sub-GeV Z' using 9.4e11 electrons on target, exceeding prior neutrino-scattering bounds in the unbroken U(1)_{B-L} scenario.