TY - JOUR
T1 - Diquarks
T2 - A QCD sum rule perspective
AU - Kim, Kyungil
AU - Jido, Daisuke
AU - Lee, Su Houng
PY - 2011/8/26
Y1 - 2011/8/26
N2 - We propose a phenomenological QCD sum rule with an explicit diquark field to investigate the essential ingredients inside the hadrons. By introducing the mass mφ and the condensate φ2 for the diquark field as parameters in the model, we find that the sum rule works well for Λ, Λc, and Λb. This implies that these Λ baryons can be represented by a diquark and a quark configuration. We also find that there is a duality relation among the parameters (mφ, φ2) for which the sum rule is equally good. In the limit when φ=0, we find mφ=400 MeV, which can be thought of as the constituent diquark mass.
AB - We propose a phenomenological QCD sum rule with an explicit diquark field to investigate the essential ingredients inside the hadrons. By introducing the mass mφ and the condensate φ2 for the diquark field as parameters in the model, we find that the sum rule works well for Λ, Λc, and Λb. This implies that these Λ baryons can be represented by a diquark and a quark configuration. We also find that there is a duality relation among the parameters (mφ, φ2) for which the sum rule is equally good. In the limit when φ=0, we find mφ=400 MeV, which can be thought of as the constituent diquark mass.
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U2 - 10.1103/PhysRevC.84.025204
DO - 10.1103/PhysRevC.84.025204
M3 - Article
AN - SCOPUS:80052213459
VL - 84
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 2
M1 - 025204
ER -