Search for an Axionlike Particle in <i>B</i> Meson Decays

Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M, Koch, H
et al (show 235 more authors) (2022) Search for an Axionlike Particle in <i>B</i> Meson Decays. PHYSICAL REVIEW LETTERS, 128 (13). 131802-.

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Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in flavor-changing B meson decays. We report herein a search for an ALP, a, in the reaction B^{±}→K^{±}a, a→γγ using data collected by the BABAR experiment at SLAC. No significant signal is observed, and 90% confidence level upper limits on the ALP coupling to electroweak bosons are derived as a function of ALP mass, improving current constraints by several orders of magnitude in the range 0.175  GeV<m_{a}<4.78  GeV.

Item Type: Article
Uncontrolled Keywords: <i>BABAR</i> Collaboration
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 17 May 2022 15:48
Last Modified: 17 Oct 2023 17:25
DOI: 10.1103/PhysRevLett.128.131802
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