https://doi.org/10.1140/epjc/s10052-023-12213-3
Regular Article - Theoretical Physics
Unparticle effects at the MUonE experiment
1
Faculty of Fundamental Sciences, PHENIKAA University, 12116, Hanoi, Vietnam
2
Department of Theoretical Physics, University of Science, 70000, Ho Chi Minh City, Vietnam
3
Vietnam National University, 70000, Ho Chi Minh City, Vietnam
4
Department of Physics, National Tsing Hua University, 300044, Hsinchu, Taiwan, ROC
a
ninh.leduc@phenikaa-uni.edu.vn
Received:
16
April
2023
Accepted:
2
November
2023
Published online:
15
November
2023
We investigate possible effects of unparticles at the MUonE experiment by considering a general model for unparticle with broken scale invariance, characterized by the scaling dimension d and the energy scale at which the scale invariance is broken. Taking into account available relevant constraints on the couplings of the unparticles with the Standard Model (SM) leptons, we found that the MUonE experiment at the level of 10 ppm systematic accuracy is sensitive to such effects if
and
GeV for vector unparticles. The effects of scalar unparticles are too feeble to be detected. The vector unparticles can induce a significant shift on the best-fit value of
at the MUonE, thereby providing an opportunity to detect unparticles or to obtain a new bound on the unparticle-SM couplings in the case of no anomaly.
© The Author(s) 2023
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