Dibaryons: Molecular versus compact hexaquarks

被引：19

作者：

Clement, H. ^{[1
]}

Skorodko, T.

机构：

[1] Univ Tubingen, Phys Inst, Morgenstelle 14, D-72076 Tubingen, Germany

来源：

CHINESE PHYSICS C | 2021年 / 45卷 / 02期

关键词：

dibaryon; hexaquark; molecule; DEUTERON PHOTO-DISINTEGRATION; EFFECTIVE-MASS-SPECTRUM; SINGLE-PION PRODUCTION; D-ASTERISK; 2380; ANALYZING POWER; PROTON POLARIZATION; MESON PRODUCTION; CROSS-SECTIONS; N-DELTA; EXCLUSIVE MEASUREMENTS;

D O I：

10.1088/1674-1137/abcd8e

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Hexaquarks constitute a natural extension of complex quark systems, just as tetra- and pentaquarks do. To this end, the current status of d*(2380) in both experiment and theory is reviewed. Recent high-precision measurements in the nucleon-nucleon channel and analyses thereof have established d*(2380) as an indisputable resonance in the long-sought dibaryon channel. Important features of this I(J(P)) = 0(3(+)) state are its narrow width and deep binding relative to the Delta(1232)Delta(1232) threshold. Its decay branchings favor theoretical calculations predicting a compact hexaquark nature of this state. We review the current status of experimental and theoretical studies on as well as new physics aspects it may bring in future. In addition, we review the situation at the Delta(1232)N and N*(1440)N thresholds, where evidence for a number of resonances of presumably molecular nature has been found - similar to the situation in charmed and beauty sectors. Finally, we briefly discuss the situation of dibaryon searches in the flavored quark sectors.

引用

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