Two-photon transitions of charmonia on the light front

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Li , Y , Li , M & Vary , J P 2022 , ' Two-photon transitions of charmonia on the light front ' , Physical Review D , vol. 105 , no. 7 , L071901 .

Title: Two-photon transitions of charmonia on the light front
Author: Li, Yang; Li, Meijian; Vary, James P.
Contributor organization: Helsinki Institute of Physics
Date: 2022-04-11
Language: eng
Number of pages: 8
Belongs to series: Physical Review D
ISSN: 2470-0010
Abstract: We investigate the two-photon transitions H-c (C) over bar -> gamma*gamma 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, eta(c) and chi(cJ) 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.
Subject: 114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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