Physical Review D
We present a search for axionlike particles, a, produced in photon-proton collisions at a center-of-mass energy of approximately 4 GeV, focusing on the scenario where the a-gluon coupling is dominant. The search uses a → γγ and a → π+π−π0 decays, and a data sample corresponding to an integrated luminosity of 168 pb−1 collected with the GlueX detector. The search for a → γγ decays is performed in the mass range of 180 < ma <480 MeV, while the search for a → π+π−π0 decays explores the 600 < ma < 720 MeV region. No evidence for a signal is found, and 90% confidence-level exclusion limits are placed on the a-gluon coupling strength. These constraints are the most stringent to date over much of the mass ranges considered.
Original Publication Citation
Adhikari, S., Akondi, C.S., Albrecht, M., ... Zhou, J. Zhou, X., Zihlmann, B. (2022) Search for photoproduction of axionlike particles at GlueX. Physical Review D, 105(5), 1-8, Article 052007. https://doi.org/10.1103/PhysRevD.105.052007
Adhikari, Shankar; Akondi, C.S.; Albrecht, M.; Amaryan, Moskov; Viducic, Tyler P.; Zhang, Z.; Zhao, Z.; Zhou, J.; The GLUEX Collaboration; and et al., "Search for Photoproduction of Axionlike Particles at GlueX" (2022). Physics Faculty Publications. 584.