Simple relativistic quark models

In the past decade, a lot of new hadrons containing heavy quarks were discovered which do not fit into the scheme provided by the traditional quark models. Such states are known as the XYZ states and they are conventionally referred to as exotic ones. At present, there is no consensus on their nature, and different models and approaches have been suggested to explain their unusual properties. The talk is devoted to a brief overview of the molecule model for such exotic states.

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Quark models for mesons

EPJ Web of Conferences ◽

10.1051/epjconf/20122001007 ◽

2012 ◽

Vol 20 ◽

pp. 01007 ◽

Cited By ~ 1

Author(s):

Jialun Ping ◽

Chengrong Deng ◽

Hongxia Huang ◽

Fangfang Dong ◽

Fan Wang

Keyword(s):

Quark Models

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MASSIVE-QUARK BARYONS AS SKYRMIONS

Modern Physics Letters A ◽

10.1142/s0217732391002268 ◽

1991 ◽

Vol 06 (23) ◽

pp. 2087-2100 ◽

Cited By ~ 1

Author(s):

MANNQUE RHO

Keyword(s):

Degrees Of Freedom ◽

Pivotal Role ◽

Massive Scalar ◽

Massive Quark ◽

B Quarks ◽

Quark Models

Massive-quark baryons containing one or more charm (c) or bottom (b) quarks are described as massive scalar doublet fields "wrapped" by the soliton of the light (up and down) flavors. The spin-isospin transmutation that takes place to make the trapped scalar behave like heavy-flavored quarks is analogous to what happens to a scalar doublet in the presence of a 't Hooft–Polyakov monopole. The Wess–Zumino term plays a pivotal role here. This model predicts spectra that resemble closely those of quark models. This feature is interpreted in terms of an induced gauge (or Berry) structure associated with "fast" and "slow" degrees of freedom corresponding, respectively, to the massive- and light-flavor quarks involved in the baryon structure.

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