Inevitable pentaquark

被引：0

作者：

Diakonov, Dmitri ^{[1
]}

机构：

[1] Petersburg Nucl Phys Inst, St Petersburg 188300, Russia

来源：

PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT | 2007年 / 168期

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The experimental status of the pentaquark searches is briefly reviewed. Recent null results by the CLAS collaboration are commented, and new strong evidence of a very narrow Theta(+) resonance by the DIANA collaboration is presented. On the theory side, we revisit the argument against the existence of the pentaquark - that of Callan and Klebanov - and show that actually a strong resonance is predicted in that approach, however its width is grossly overestimated. A recent calculation gives 2 MeV for the pentaquark width, and this number is probably still an upper bound.

引用

页码：1 / 9

页数：9

共 43 条

[1]

AMARIAN M, HEPTH0612150

[2] K+-nucleon scattering and exotic S = +1 baryons (vol 68, art no 042201, 2003) -: art. no. 019901 [J].

Arndt, RA ;

Strakovsky, II ;

Workman, RL .

PHYSICAL REVIEW C, 2004, 69 (01)

[3] K+-nucleon scattering and exotic S=+1 baryons -: art. no. 042201 [J].

Arndt, RA ;

Strakovsky, II ;

Workman, RL .

PHYSICAL REVIEW C, 2003, 68 (04) :422011-422012

[4] Extraction of radiative decay width for the non-strange partner of Θ+ [J].

Azimov, Y ;

Kuznetsov, V ;

Polyakov, MV ;

Strakovsky, I .

EUROPEAN PHYSICAL JOURNAL A, 2005, 25 (03) :325-327

[5]

AZIMOV Y, HEPTH0611238

[6] Observation of a baryon resonance with positive strangeness in K+ collisions with Xe nuclei [J].

Barmin, VV ;

Borisov, VS ;

Davidenko, GV ;

Dolgolenko, AG ;

Guaraldo, C ;

Larin, IF ;

Matveev, VA ;

Petrascu, C ;

Shebanov, VA ;

Shishov, NN ;

Sokolov, LI ;

Tumanov, GK .

PHYSICS OF ATOMIC NUCLEI, 2003, 66 (09) :1715-1718

[7]

BARMIN VV, HEPEX0603017

[8] Experimental limits on the width of the reported Θ(1540)+ -: art. no. 011501 [J].

Cahn, RN ;

Trilling, GH .

PHYSICAL REVIEW D, 2004, 69 (01)

[9] BOUND-STATE APPROACH TO STRANGENESS IN THE SKYRME MODEL [J].

CALLAN, CG ;

KLEBANOV, I .

NUCLEAR PHYSICS B, 1985, 262 (02) :365-382

[10] Chiral soliton models, large Nc consistency and the Θ+ exotic baryon [J].

Cohen, TD .

PHYSICS LETTERS B, 2004, 581 (3-4) :175-181

← 1 2 3 4 5 →