| Article | |
| Report number | arXiv:2102.01885 ; CERN-EP-2021-017 |
| Title | Constraints on New Physics in the Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector |
| Author(s) |
Andreev, Yu. M. (Moscow, INR) ; Banerjee, D. (CERN) ; Bernhard, J. (CERN) ; Burtsev, V.E. (Dubna, JINR) ; 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) ; Charitonidis, N. (CERN) ; Feshchenko, A. (Dubna, JINR) ; Frolov, V.N. (Dubna, JINR) ; Gardikiotis, A. (Patras U.) ; Gerassimov, S.G. (Munich, Tech. U. ; Lebedev Inst.) ; Gninenko, S.N. (Moscow, INR) ; Hösgen, M. (Bonn U., HISKP) ; 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. (Munich, Tech. U. ; Lebedev Inst.) ; Kovalenko, S.G. (Andres Bello Natl. U.) ; Kramarenko, V.A. (Dubna, JINR ; SINP, Moscow) ; Kravchuk, L.V. (Moscow, INR) ; Krasnikov, N.V. (Dubna, JINR ; Moscow, INR) ; Kuleshov, S.V. (Andres Bello Natl. U.) ; Lyubovitskij, V.E. (Tomsk Polytechnic U. ; Tomsk Pedagogical Inst. ; CCTVal, Valparaiso) ; Lysan, V. (Dubna, JINR) ; Matveev, V.A. (Dubna, JINR) ; Mikhailov, Yu. V. (Serpukhov, IHEP) ; Molina Bueno, L. (Zurich, ETH) ; Peshekhonov, D.V. (Dubna, JINR) ; Polyakov, V.A. (Serpukhov, IHEP) ; Radics, B. (Zurich, ETH) ; Rojas, R. (CCTVal, Valparaiso) ; Rubbia, A. (Zurich, ETH) ; 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.) ; Vasilishin, B.I. (Tomsk Polytechnic U.) ; Volkov, P.V. (Dubna, JINR ; SINP, Moscow) ; Volkov, V. Yu. (SINP, Moscow) |
| Publication | 2021-05-26 |
| Imprint | 2021-02-03 |
| Number of pages | 6 |
| Note | 6 pages, 4 figures |
| In: | Phys. Rev. Lett. 126 (2021) 21 |
| DOI | 10.1103/PhysRevLett.126.211802 (publication) |
| Subject category | hep-ph ; Particle Physics - Phenomenology ; hep-ex ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN SPS ; NA64 |
| Abstract | We performed a search for a new generic $X$ boson, which could be a scalar ($S$), pseudoscalar ($P$), vector ($V$) or an axial vector ($A$) particle produced in the 100 GeV electron scattering off nuclei, $e^- Z \to e^- Z X$, followed by its invisible decay in the NA64 experiment at CERN. No evidence for such process was found in the full NA64 data set of $2.84\times 10^{11}$ electrons on target. We place new bounds on the $S, P, V, A$ coupling strengths to electrons, and set constraints on their contributions to the electron anomalous magnetic moment $a_e$, $|\Delta a_{X}| \lesssim 10^{-15} - 10^{-13}$ for the $X$ mass region $m_X\lesssim 1$ GeV. These results are an order of magnitude more sensitive compared to the current accuracy on $a_e$ from the electron $g-2$ experiments and recent high-precision determination of the fine structure constant. |
| Copyright/License | preprint: (License: CC-BY-4.0) publication: © 2021-2025 authors (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
Record creato 2021-02-06, modificato l'ultima volta il 2024-09-02
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