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

被引：34

作者：

Sanchez, M. Sanchez ^{[1
]}

Geng, Li-Sheng ^{[2
,3
]}

Lu, Jun-Xu ^{[2
,3
]}

Hyodo, Tetsuo ^{[4
]}

Valderrama, M. Pavon ^{[2
,3
]}

机构：

[1] Univ Paris Saclay, Inst Phys Nucl, Univ Paris Sud, CNRS,IN2P3, F-91406 Orsay, France

[2] Beihang Univ, Sch Phys & Nucl Energy Engn, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China

[3] Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, Beijing 100191, Peoples R China

[4] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 05期

基金：

中国国家自然科学基金;

关键词：

HEAVY MESONS; DECAYS; CHARMONIUM; STABILITY; STATES;

D O I：

10.1103/PhysRevD.98.054001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The D*(s0) (2317)D and D*(s1) (2460)D* heavy meson systems can exchange a kaon that is emitted in the S-wave due to the opposite intrinsic parity of the D*(s0) (D*(s1)) and D(D*) mesons. As a consequence of the mass difference of the D*(s0) (D*(s1)) 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 (m(Ds0)- m(D))(2)/f(pi)(2) and (m(Ds1)- m(D)*)(2)/f(pi)(2).This combination of range and strength almost guarantees the existence of D*(s0) (2317)D and D*(s1) (2460)D* bound states with J(P) = 0(-) and J(P) = 0(-), 2(-), respectively. Concrete calculations indicate a binding energy of 5-15 MeV independently of J(P). The D*(s0) (2317)D and D*(s1) (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*B*(s1) 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.

引用

页数：6

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Exotic doubly charmed D*s0 (2317)D and D*s1 (2460)D* molecules

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