Isospin breaking of the narrow charmonium state of Belle at 3872 MeV as a deuson

By N. Tornqvist. 2004

405 citations recorded by the source corpus.

Abstract The narrow charmonium state near 3872 MeV reported by the Belle Collaboration and confirmed by CDF lies almost exactly at the D 0 D ∗0 threshold. As was predicted many years ago it can be a D D ∗ deuteronlike meson–meson state called a deuson. If so, its spin-parity should be 1++, or possibly 0−+, and its isospin predominantly 0. An important decay mode should be via D 0 D ∗0 to D 0 D 0 π 0 . Large isospin breaking is expected because of the isospin mass splitting between the neutral and charged D ( D ∗ ) mesons. Because of this large isospin breaking the decay X(3872)→J/ψρ would be allowed, while J/ψσ would be forbidden by C-parity, as indicated by the present data.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/b9d8de3ad4d8cb305730a8ddb92c1b7c698c3131

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Exotics: Heavy pentaquarks and tetraquarks (2017, background): “There are quite a number of arguments in favour of the molecule interpretation, as pointed out by Törnqvist [197]: • The molecule states should be JPC=0−+ or JPC=1++.”
Multiquark Resonances (2016, methodology): “Table 2: Bound states allowed by the one-pion-exchange potential as found in [66].”
Multiquark States (2017, background): “Such assignments are favored if the constituents can be bound via exchange of a light pseudoscalar, such as pion [37, 38, 39] or possibly η [40].”