scholarly journals Overview of multiquark states

2018 ◽  
Author(s):  
Christian Fischer ◽  
Gernot Eichmann
Keyword(s):  
Multiquark States

Multiquark states and the breaking of exchange degeneracy

1979 ◽  
Vol 151 ◽  
pp. 226-236 ◽  
Author(s):  
Gary R. Goldstein ◽  
P. Haridas
Keyword(s):  
Exchange Degeneracy ◽  
Multiquark States

scholarly journals Shedding Light on Hexaquarks

2018 ◽  
Vol 46 ◽  
pp. 1860033 ◽  
Author(s):  
M. Bashkanov ◽  
T. Skorodko ◽  
H. Clement ◽  
D. P. Watts
Keyword(s):  
Internal Structure ◽  
Large Set ◽  
Physical Size ◽  
Decay Channels ◽  
Quantum Numbers ◽  
New Findings ◽  
Reaction Channels ◽  
Experimental Side ◽  
Multiquark States ◽  
Made In

Several new findings in the four, five and six quark systems reheat the interest in the field of multiquark states (beyond the trivial [Formula: see text] and [Formula: see text]). A lot of progress has recently been made in the 6q sector, on both the theoretical and experimental side. A resonance like structure observed in double-pionic fusion to the deuteron, at M = 2.38 GeV with [Formula: see text] = 70 MeV and [Formula: see text] has been consistently observed in a wealth of reaction channels, supporting the existence of a resonant dibaryon state - the [Formula: see text]. These studies include measurement of all the principle strong decay channels in pn collisions in the quasifree mode by the WASA-at-COSY and HADES collaborations. The internal structure of the [Formula: see text] is largely unknown. It can contain various ”hidden color” 6q configurations, [Formula: see text] molecular states with angular momentum L = 0,2,4,6 as well as meson-assisted dressed dibaryon structures. The large set of experimental data obtained to date gives some constraints on the internal structure of the [Formula: see text] dibaryon, but does not settle the issue. The [Formula: see text] is the only multiquark state which can be produced copiously at current facilities, offering unique access to information beyond its basic quantum numbers, particularly its physical size and internal structure.

Multiquark states. III.Q6dibaryon resonances

1980 ◽  
Vol 21 (9) ◽  
pp. 2653-2671 ◽  
Author(s):  
P. J. Mulders ◽  
A. T. Aerts ◽  
J. J. de Swart
Keyword(s):  
Multiquark States

Multiquark states and exotics

1981 ◽  
Author(s):  
Anthony J. G. Hey
Keyword(s):  
Multiquark States

scholarly journals Interactions of multiquark states in the chromodielectric model

2006 ◽  
Vol 73 (9) ◽  
Author(s):  
Gunnar Martens ◽  
Carsten Greiner ◽  
Stefan Leupold ◽  
Ulrich Mosel
Keyword(s):  
Multiquark States

NON-NUCLEAR MULTIQUARK STATES: DIBARYONS AND PENTAQUARKS FROM A SUCCESSFUL NUCLEAR QUARK MODEL

2005 ◽  
Vol 20 (08n09) ◽  
pp. 1963-1966
Author(s):  
T. GOLDMAN
Keyword(s):  
Binding Energy ◽  
Quark Model ◽  
Free Parameter ◽  
New Physics ◽  
Low Energy ◽  
Nuclear Binding Energy ◽  
Low Mass ◽  
Scattering Phase ◽  
Multiquark States ◽  
Scattering Phase Shifts

A model for nuclei described directly in terms of quarks has been developed in both relativistic and non-relativistic forms. It describes nuclear binding energy and structure for small nuclei (A=3,4) systematically correctly, including the EMC effect. With one free parameter each for strange and for nonstrange states, it also well describes low energy baryon-nucleon scattering, phase shifts and potentials. It predicts low mass, narrow dibaryon and pentaquark states. To be consistent with reported states, new physics may be required that is not included in any quark model to date.

scholarly journals Production of exotic charmonium in heavy ion collisions

2020 ◽  
Vol 235 ◽  
pp. 02005
Author(s):  
F. S. Navarra
Keyword(s):  
Gas Phase ◽  
Cross Section ◽  
Heavy Ion Collisions ◽  
Production Cross ◽  
Short Review ◽  
Heavy Ion ◽  
Charmonium Production ◽  
Ion Collisions ◽  
Hadron Gas ◽  
Multiquark States

We present a short review of exotic charmonium production in heavy ion collisions. We discuss predictions for the production cross section of several of these states in ultra-peripheral Pb-Pb collisions at the LHC. The experimental study of these processes is feasible and can be used to yield valuable information about the structure of multiquark states. We also address X(3872) production in central Pb-Pb collisions. In particular, we discuss the suppression of X(3872) during the hadron gas phase. Finally, we comment on the very recent CMS data on the X(3872) yield in Pb-Pb collisions. the very recent CMS data on the X(3872) yield in Pb-Pb collisions.

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