@article{6ec97aa5e3f54269ad43a936ab006069,
title = "Constraints on New Physics in Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector",
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→e-ZX, followed by its invisible decay in the NA64 experiment at CERN. No evidence for such a process was found in the full NA64 dataset of 2.84×1011 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 ae, |ΔaX|?10-15-10-13 for the X mass region 1 MeV?mX?1 GeV. These results are an order of magnitude more sensitive compared to the current accuracy on ae from the electron g-2 experiments and recent high-precision determination of the fine structure constant.",
author = "\{(NA64 Collaboration)\} and Andreev, \{Yu M.\} and D. Banerjee and J. Bernhard and Burtsev, \{V. E.\} and Chumakov, \{A. G.\} and D. Cooke and P. Crivelli and E. Depero and Dermenev, \{A. V.\} and Donskov, \{S. V.\} and Dusaev, \{R. R.\} and T. Enik and N. Charitonidis and A. Feshchenko and Frolov, \{V. N.\} and A. Gardikiotis and Gerassimov, \{S. G.\} and Gninenko, \{S. N.\} and M. H{\"o}sgen and Kachanov, \{V. A.\} and Karneyeu, \{A. E.\} and G. Kekelidze and B. Ketzer and Kirpichnikov, \{D. V.\} and Kirsanov, \{M. M.\} and Kolosov, \{V. N.\} and Konorov, \{I. V.\} and Kovalenko, \{S. G.\} and Kramarenko, \{V. A.\} and Kravchuk, \{L. V.\} and Krasnikov, \{N. V.\} and Kuleshov, \{S. V.\} and Lyubovitskij, \{V. E.\} and V. Lysan and Matveev, \{V. A.\} and Mikhailov, \{Yu V.\} and \{Molina Bueno\}, L. and Peshekhonov, \{D. V.\} and Polyakov, \{V. A.\} and B. Radics and R. Rojas and A. Rubbia and Samoylenko, \{V. D.\} and H. Sieber and D. Shchukin and Tikhomirov, \{V. O.\} and I. Tlisova and Toropin, \{A. N.\} and Trifonov, \{A. Yu\} and Vasilishin, \{B. I.\}",
note = "Publisher Copyright: {\textcopyright} 2021 authors.",
year = "2021",
month = may,
day = "25",
doi = "10.1103/PhysRevLett.126.211802",
language = "English",
volume = "126",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",
}