Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1849180 | Physics Letters B | 2015 | 5 Pages |
Abstract
Starting from the hypothesis that the X(3872)X(3872) is a DD¯⁎ molecule, we discuss the radiative decays of the X(3872)X(3872) into γJ/ψγJ/ψ and γψ′γψ′ from an effective field theory point of view. We show that radiative decays are very weakly sensitive to the long-range structure of the X(3872)X(3872). In particular, contrary to earlier claims, we argue that the experimentally determined ratio of the mentioned branching fractions is not in conflict with a wave function of the X(3872)X(3872) that is dominated by the DD¯⁎ hadronic molecular component.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Feng-Kun Guo, C. Hanhart, Yu.S. Kalashnikova, Ulf-G. Meißner, A.V. Nefediev,