Details

Autor(en) / Beteiligte

• Sanchez, M Sanchez
• Geng, Li-Sheng
• Lu, Jun-Xu
• Hyodo, Tetsuo
• Valderrama, M Pavon

Titel

Exotic doubly charmed Ds0(2317)D and Ds1(2460)D molecules

Ist Teil von

• Physical review. D, 2018-09, Vol.98 (5)

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The Ds0*(2317)D and Ds1*(2460)D* heavy meson systems can exchange a kaon that is emitted in the S-wave due to the opposite intrinsic parity of the Ds0*(Ds1*) and D(D*) mesons. As a consequence of the mass difference of the Ds0*(Ds1*) and D(D*) mesons, the range of the kaon exchange potential will be significantly longer than expected, corresponding to an effective mass of about 200 MeV. The potential will be very strong: the strength of the interaction is proportional to (mDs0−mD)2/fπ2 and (mDs1−mD*)2/fπ2. This combination of range and strength almost guarantees the existence of Ds0*(2317)D and Ds1*(2460)D* bound states with JP=0− and JP=0−, 2−, respectively. Concrete calculations indicate a binding energy of 5–15 MeV independently of JP. The Ds0*(2317)D and Ds1*(2460)D* molecules have manifestly exotic flavor quantum numbers: C=2, S=1, and I=1/2. We expect the existence of bottom counterparts composed of the BBs0 and B*Bs1* mesons, which will be more bound and have a richer spectrum that might include a shallow P-wave state and an excited S-wave state.