Constraints on New Physics in Electron g−2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector / Yu. M. Andreev, D. Banerjee, S. V. Donskov [et al.]

Уровень набора: Physical Review LettersАльтернативный автор-лицо: Andreev, Yu. M., Yury Mikhaylovich;Banerjee, D.;Donskov, S. V., Sergey Vasiljevich;Chumakov, A. G., physicist, laboratory assistant-researcher of Tomsk Polytechnic University, 1992-, Aleksandr Grigorjevich;Dusaev, R. R., specialist in the field of nuclear physics, Engineer of Tomsk Polytechnic University, 1988-, Renat Ramilyevich;Lyubovitskiy (Lyubovitskij), V. E., physicist, Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany), 1963-, Valery Efimovich;Trifonov, A. Yu., physicist, mathematician, Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, 1963-, Andrey Yurievich;Vasilishin, B. I., engineer-physicist, laboratory researcher at Tomsk Polytechnic University, 1990-, Bogdan IvanovichКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет, Исследовательская школа физики высокоэнергетических процессов, (2017- );Национальный исследовательский Томский политехнический университет, Школа базовой инженерной подготовки, Отделение математики и информатикиЯзык: английский.Страна: .Резюме или реферат: 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..Примечания о наличии в документе библиографии/указателя: [References: 70 tit.].Тематика: электронный ресурс | труды учёных ТПУ Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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[References: 70 tit.]

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.

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