Two-photon transitions of charmonia on the light front
Li, Y., Li, M., & Vary, J. P. (2022). Two-photon transitions of charmonia on the light front. Physical Review D, 105(7), Article L071901. https://doi.org/10.1103/PhysRevD.105.L071901
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Physical Review DDate
2022Copyright
© The Authors 2022
We investigate the two-photon transitions Hc¯c→γ∗γ of the charmonium system in light-front dynamics. The light-front wave functions were obtained from solving the effective Hamiltonian based on light-front holography and one-gluon exchange interaction within the basis light-front quantization approach. We compute the two-photon transition form factors as well as the two-photon decay widths for S- and P-wave charmonia, ηc and χcJ and their excitations. Without introducing any free parameters, our predictions are in good agreement with the recent experimental measurements by BABAR and Belle, shedding light on the relativistic nature of charmonium.
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American Physical Society (APS)ISSN Search the Publication Forum
2470-0010Keywords
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https://converis.jyu.fi/converis/portal/detail/Publication/148926315
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European Commission; Research Council of FinlandFunding program(s)
RIA Research and Innovation Action, H2020; Academy Project, AoF; ERC European Research Council, H2020
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about funding
This work is supported by the New faculty start-up fund of the University of Science and Technology of China. Y. L and J. P. Vary are supported in part by the U.S. Department of Energy (DOE) under Grant No. DE-FG02-87ER40371. M. L. is supported by the Academy of Finland, Project No. 321840 and under the European Unions Horizon 2020 research and innovation program by the European Research Council (ERC, Grant agreement No. ERC-2015-CoG-681707) and by the STRONG-2020 project (Grant agreement No. 824093). The content of this article does not reflect the official opinion of the European Union and responsibility for the information and views expressed therein lies entirely with the authors. M. L. acknowledges financial support from Xunta de Galicia (Centro singular de investigacin de Galicia accreditation 2019-2022), European Union European Regional Development Fund (ERDF), the Maria de Maeztu Units of Excellence program, the Spanish Research State Agency, and European Research Council Project No. ERC-2018-ADG-835105 YoctoLHC. ...License
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