TY - JOUR
T1 - Light scalars with lepton number to solve the (g-2)e anomaly
AU - Gardner, Susan
AU - Yan, Xinshuai
N1 - Publisher Copyright:
© 2020 authors.
PY - 2020/10
Y1 - 2020/10
N2 - Scalars that carry lepton number can help mediate would-be lepton number-violating processes, such as neutrinoless double β decay or lepton scattering-mediated nucleon-antinucleon conversion. Here, we show that such new scalars can also solve the anomaly in precision determinations of the fine-structure constant α from atom interferometry and from the electron's anomalous magnetic moment, ae(g-2)e/2, by reducing |ae|. Study of the phenomenological constraints on these solutions favor a doubly charged scalar with mass below the GeV scale. Significant constraints arise from the measurement of the parity-violating asymmetry in Møller scattering, and we consider the implications of the next-generation MOLLER experiment at Jefferson Laboratory and of an improved ae measurement.
AB - Scalars that carry lepton number can help mediate would-be lepton number-violating processes, such as neutrinoless double β decay or lepton scattering-mediated nucleon-antinucleon conversion. Here, we show that such new scalars can also solve the anomaly in precision determinations of the fine-structure constant α from atom interferometry and from the electron's anomalous magnetic moment, ae(g-2)e/2, by reducing |ae|. Study of the phenomenological constraints on these solutions favor a doubly charged scalar with mass below the GeV scale. Significant constraints arise from the measurement of the parity-violating asymmetry in Møller scattering, and we consider the implications of the next-generation MOLLER experiment at Jefferson Laboratory and of an improved ae measurement.
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U2 - 10.1103/PhysRevD.102.075016
DO - 10.1103/PhysRevD.102.075016
M3 - Article
AN - SCOPUS:85093497018
SN - 2470-0010
VL - 102
JO - Physical Review D
JF - Physical Review D
IS - 7
M1 - 075016
ER -