Tetra- and Penta-Quark Structures in the Constituent Quark Model
نویسندگان
چکیده
منابع مشابه
String Junction Model, Cluster Hypothesis, Penta-Quark Baryon and Tetra-Quark Meson
Thirty years ago we proposed string junction model of hadrons and examined structure and reaction of hadrons including exotic ones. Mass m of exotic hadrons of light quarks is roughly given by m ∼ NJ · mB, where NJ is the total number of junctions and mB ∼ 1 GeV is the ordinary light baryon mass. In this paper we introduce “cluster hypothesis” into the model by which mass of a complex hadron is...
متن کاملQuark Confinement in a Constituent Quark Model
On the level of an effective quark theory, we define confinement by the absence of quark anti-quark thresholds in correlation functions. We then propose a confining Nambu-Jona-Lasinio-type model. The confinement is implemented in analogy to Anderson localization in condensed matter systems. We study the model's phase structure as well as its behavior under extreme conditions, i.e. high temperat...
متن کاملHypercentral Constituent Quark Model and Isospin for the Baryon Static Properties
So far the static properties of hadrons have been introduced in various models. The static properties of hadrons (charge radius, magnetic moment, etc.) are useful for understanding the quark structure of hadron. In this work we have introduced the hypercentral constituent quark and isospin dependent potentials. Here constituent quarks interact with each other via a potential in which we have ta...
متن کاملQuadrupole Transition in the Constituent Quark Model
Information on the intrinsic deformation of the proton can be obtained by studying the electromagnetic p → ∆+ quadrupole transition. Recent experiments have shown that the electric quadrupole (E2) strength in γp → ∆+ is about 10 times larger than predicted by the simple quark model using only one-body currents. Our analysis provides evidence for the dominance of exchange currents in the N → ∆ q...
متن کاملBaryon Spectroscopy and the Constituent Quark Model
We explore further the idea that the lattice QCD data for hadron properties in the region mπ > 0.2GeV 2 can be described by the constituent quark model. This leads to a natural explanation of the fact that nucleon excited states are generally stable for pion masses greater than their physical excitation energies. Finally we apply these same ideas to the problem of how pentaquarks might behave i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symmetry
سال: 2020
ISSN: 2073-8994
DOI: 10.3390/sym12111869