| Article | |
| Report number | arXiv:2206.03101 |
| Title | Search for a light $Z′$ in the $L_μ-L_τ$ scenario with the NA64-$e$ experiment at CERN |
| Related title | Search for a light muon-philic $Z^\prime$ with the NA64-$e$ experiment at CERN |
| Author(s) |
Andreev, Yu.M. (Moscow, INR) ; Banerjee, D. (CERN) ; Oberhauser, B. Banto (CERN) ; Bernhard, J. (Zurich, ETH) ; Bisio, P. (Genoa U. ; INFN, Genoa) ; Bondì, M. (Rome U., Tor Vergata ; INFN, Rome2) ; Burtsev, V.E. (Dubna, JINR) ; Celentano, A. (INFN, Genoa) ; Charitonidis, N. (CERN) ; Chumakov, A.G. (Tomsk Polytechnic U. ; Tomsk Pedagogical Inst.) ; Cooke, D. (University Coll. London) ; Crivelli, P. (Zurich, ETH) ; Depero, E. (Zurich, ETH) ; Dermenev, A.V. (Moscow, INR) ; Donskov, S.V. (Serpukhov, IHEP) ; Dusaev, R.R. (Tomsk Polytechnic U.) ; Enik, T. (Dubna, JINR) ; Frolov, V.N. (Dubna, JINR) ; Gardikiotis, A. (Patras U.) ; Gerassimov, S.G. (Lebedev Inst. ; Munich, Tech. U.) ; Gninenko, S.N. (Moscow, INR) ; Hösgen, M. (Bonn U., HISKP) ; Jeckel, M. (CERN) ; Kachanov, V.A. (Serpukhov, IHEP) ; Karneyeu, A.E. (Moscow, INR) ; Kekelidze, G. (Dubna, JINR) ; Ketzer, B. (Bonn U., HISKP) ; Kirpichnikov, D.V. (Moscow, INR) ; Kirsanov, M.M. (Moscow, INR) ; Kolosov, V.N. (Serpukhov, IHEP) ; Konorov, I.V. (Lebedev Inst. ; Munich, Tech. U.) ; Kovalenko, S.G. (Andres Bello Natl. U. ; Rio Grande do Norte U.) ; Kramarenko, V.A. (Dubna, JINR ; SINP, Moscow) ; Kravchuk, L.V. (Moscow, INR) ; Krasnikov, N.V. (Moscow, INR ; Dubna, JINR) ; Kuleshov, S.V. (Andres Bello Natl. U. ; Rio Grande do Norte U.) ; Lyubovitskij, V.E. (Tomsk Polytechnic U. ; Santa Maria U., Valparaiso ; Tomsk Pedagogical Inst. ; Rio Grande do Norte U.) ; Lysan, V. (Dubna, JINR) ; Marsicano, L. (INFN, Genoa) ; Matveev, V.A. (Dubna, JINR) ; Mikhailov, Yu.V. (Serpukhov, IHEP) ; Bueno, L. Molina (Valencia U., IFIC ; Zurich, ETH) ; Peshekhonov, D.V. (Dubna, JINR) ; Polyakov, V.A. (Serpukhov, IHEP) ; Radics, B. (Zurich, ETH) ; Rojas, R. (Santa Maria U., Valparaiso) ; Rubbia, A. (Zurich, ETH) ; Samalantin, K. (Dubna, JINR) ; Samoylenko, V.D. (Serpukhov, IHEP) ; Sieber, H. (Zurich, ETH) ; Shchukin, D. (Lebedev Inst.) ; Tikhomirov, V.O. (Lebedev Inst.) ; Tlisova, I. (Moscow, INR) ; Toropin, A.N. (Moscow, INR) ; Trifonov, A. Yu (Tomsk Polytechnic U. ; Tomsk Pedagogical Inst.) ; Ulloa, P. (Andres Bello Natl. U.) ; Vasilishin, B.I. (Tomsk Polytechnic U.) ; Arenas, G. Vasquez (Santa Maria U., Valparaiso) ; Volkov, P.V. (Dubna, JINR ; SINP, Moscow) ; Volkov, V.Yu. (SINP, Moscow) ; Voronchikhin, I. (Tomsk Polytechnic U. ; Tomsk Pedagogical Inst.) |
| Publication | 2022-08-01 |
| Imprint | 2022-06-07 |
| Number of pages | 11 |
| Note | 11 pages, 9 figures. This version was accepted for publication |
| In: | Phys. Rev. D 106 (2022) 032015 |
| DOI | 10.1103/PhysRevD.106.032015 (publication) |
| Subject category | hep-ph ; Particle Physics - Phenomenology ; hep-ex ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN SPS ; NA64 |
| Abstract | The extension of Standard Model made by inclusion of additional $U(1)$ gauge $L_\mu-L_\tau$ symmetry can explain the difference between the measured and the predicted value of the muon magnetic moment and solve the tension in $B$ meson decays. This model predicts the existence of a new, light $Z^\prime$ vector boson, predominantly coupled to second and third generation leptons, whose interaction with electrons is due to a loop mechanism involving muons and taus. In this work, we present a rigorous evaluation of the upper limits in the $Z^\prime$ parameter space, obtained from the analysis of the data collected by the NA64-$e$ experiment at CERN SPS, that performed a search for light dark matter with $2.84\times10^{11}$ electrons impinging with 100 GeV on an active thick target. The resulting limits, despite being included in a region already investigated by neutrino experiments,touch the muon $g-2$ preferred band for values of the $Z^\prime$ mass of order of 1 MeV. The sensitivity projections for the future high-statistics NA64-$e$ runs demonstrate the power of the electrons/positron beam approach in this theoretical scenario. |
| Copyright/License | publication: © 2022-2024 authors (License: CC BY 4.0), sponsored by SCOAP³ preprint: (License: CC BY 4.0) |
Corresponding record in: Inspire
Notice créée le 2022-06-24, modifiée le 2024-09-28
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