Diquark-antidiquark states with hidden or open charm and the nature of X(3872) -: art. no. 014028

被引：687

作者：

Maiani, L ^{[1
]}

Piccinini, F

Polosa, AD

Riquer, V

机构：

[1] Univ Roma La Sapienza, Rome, Italy

[2] Ist Nazl Fis Nucl, Rome, Italy

[3] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[4] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy

[5] Univ Bari, Dipartimento Fis, Bari, Italy

[6] Ist Nazl Fis Nucl, I-70126 Bari, Italy

[7] CERN, Theory Dept, CH-1211 Geneva, Switzerland

来源：

PHYSICAL REVIEW D | 2005年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.71.014028

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Heavy-light diquarks can be the building blocks of a rich spectrum of states which can accommodate some of the newly observed charmoniumlike resonances not fitting a pure c<<(c)over bar> assignment. We examine this possibility for hidden and open charm diquark-antidiquark states deducing spectra from constituent quark masses and spin-spin interactions. Taking the X(3872) as input we predict the existence of a 2(++) state that can be associated to the X(3940) observed by Belle and reexamine the state claimed by SELEX, X(2632). The possible assignment of the previously discovered states D-s(2317) and D-s(2457) is discussed. We predict X(3872) to be made of two components with a mass difference related to m(u)-m(d) and discuss the production of X(3872) and of its charged partner X+/- in the weak decays of B-+,B-0.

引用

页码：014028 / 1

页数：12

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