Low-energy universality and the new charmonium resonance at 3870-MeV

By E. Braaten, M. Kusunoki. 2003

178 citations recorded by the source corpus.

The recently-discovered narrow charmonium resonance near 3870 MeV is interpreted as a hadronic molecule whose constituents are the charm mesons D^0 and \bar D^{*0} or \bar D^0 and D^{*0}. Because of an accidental fine-tuning of the molecule to very near the D^0 \bar D^{*0} threshold, it has some universal properties that are completely determined by the unnaturally large D^0 \bar D^{*0} scattering length a. Its narrow width can be explained by the suppression by a factor of 1/a of decay modes other than the decay of a constituent \bar D^{*0} or D^{*0}. Its production rates are also suppressed by a factor of 1/a. A particularly predictive mechanism for generating the large scattering length is the accidental fine-tuning of a P-wave charmonium state to the D^0 \bar D^{*0} threshold.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/065628acb0686de71637ed89b4bdc4fdb53726d6

How researchers see this paper

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

In Atomic and Molecular Physics, and Optics

1. E. Swanson
2. R. Mitchell
3. Alessandro Pilloni
4. A. Polosa
5. A. Esposito
6. H. Hammer
7. R. Lebed
8. E. Braaten

In Nuclear and High Energy Physics

1. Alessandro Pilloni
2. A. Esposito
3. A. Polosa
4. R. Mitchell
5. E. Swanson
6. J. Lange
7. S. Stone
8. A. Ali

Citations in the corpus

• Exotics: Heavy pentaquarks and tetraquarks (2017, background): “05 which seems to contradict the prediction for molecules in [148], which however was based on neutral molecular”
• Multiquark Resonances (2016, methodology): “In [19] two possible explanations for this phenomenon are given.”
• Universality in few‐body systems with large scattering length (2004, background): “If the X(3872) is indeed a D0D̄∗0/D̄0D∗0 molecule, then it has universal properties that are determined by the unnaturally large scattering length [35,36].”
• Heavy-quark QCD exotica (2016, background): “Indeed, for sufficiently small B, the only length parameter describing the bound state is the scattering length, R→ a, a phenomenon known as low-energy universality [212].”