Diquarks in tetraquark spectroscopy

被引:1
作者
Galata, Giuseppe [1 ,2 ,3 ]
Santopinto, Elena [2 ,3 ]
Bijker, Roelof [1 ]
机构
[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, AP 70-543, Mexico City 04510, DF, Mexico
[2] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[3] Univ Genoa, I-16146 Genoa, Italy
来源
BEAUTY IN PHYSICS: THEORY AND EXPERIMENT: IN HONOR OF FRANCESCO LACHELLO ON THE OCCASION OF HIS 70TH BIRTHDAY | 2012年 / 1488卷
关键词
Baryon spectroscopy; tetraquarks; diquark; SPECTRUM-GENERATING ALGEBRA; MULTIQUARK HADRONS; MASS FORMULA; MESONS; MODEL;
D O I
10.1063/1.4759408
中图分类号
O59 [应用物理学];
学科分类号
摘要
The diquark is a system of two strongly correlated quarks. Obviously no free diquarks can exist, since they carry color. However they can theoretically form inside hadrons. While the actual possibility that two quarks can form stable bounds inside hadrons is still discussed, the use of a diquark effective degree of freedom can be very useful because it reduces the total number of states predicted and simplify the interactions inside hadrons. Here we present a possible application of the diquark to the tetraquark meson in the diquark-antidiquark limit. In this limit the tetraquark meson is composed of a diquark and an antidiquark. The complete set of states are constructed and a simple algebraic mass formula is applied in order to calculate the spectrum.
引用
收藏
页码:274 / 279
页数:6
相关论文
共 19 条
  • [1] Bijker R, 2004, REV MEX FIS, V50, P88
  • [2] Spectroscopy of pentaquark states
    Bijker, R
    Giannini, MM
    Santopinto, E
    [J]. EUROPEAN PHYSICAL JOURNAL A, 2004, 22 (02) : 319 - 329
  • [3] A SCHEMATIC MODEL OF BARYONS AND MESONS
    GELLMANN, M
    [J]. PHYSICS LETTERS, 1964, 8 (03): : 214 - 215
  • [4] Gluelump spectrum from Coulomb gauge QCD
    Guo, Peng
    Szczepaniak, Adam P.
    Galata, Giuseppe
    Vassallo, Andrea
    Santopinto, Elena
    [J]. PHYSICAL REVIEW D, 2008, 77 (05):
  • [5] Heavy quarkonium hybrids from Coulomb gauge QCD
    Guo, Peng
    Szczepaniak, Adam P.
    Galata, Giuseppe
    Vassallo, Andrea
    Santopinto, Elena
    [J]. PHYSICAL REVIEW D, 2008, 78 (05):
  • [6] SPECTRUM GENERATING ALGEBRA FOR STRING-LIKE HADRONS - MASS FORMULA FOR MESONS
    IACHELLO, F
    MUKHOPADHYAY, NC
    ZHANG, L
    [J]. PHYSICS LETTERS B, 1991, 256 (3-4) : 295 - 300
  • [7] SPECTRUM-GENERATING ALGEBRA FOR STRINGLIKE MESONS - MASS FORMULA FOR QQBAR MESONS
    IACHELLO, F
    MUKHOPADHYAY, NC
    ZHANG, L
    [J]. PHYSICAL REVIEW D, 1991, 44 (03) : 898 - 914
  • [8] BARYON RESONANCES IN A QUARK MODEL
    IDA, M
    KOBAYASHI, R
    [J]. PROGRESS OF THEORETICAL PHYSICS, 1966, 36 (04): : 846 - +
  • [9] Jaffe R. L., 1999, HEPPH0001123
  • [10] MULTI-QUARK HADRONS .1. PHENOMENOLOGY OF Q2QBAR2 MESONS
    JAFFE, RJ
    [J]. PHYSICAL REVIEW D, 1977, 15 (01) : 267 - 280