TY - JOUR

T1 - Diquarks

T2 - A QCD sum rule perspective

AU - Kim, Kyungil

AU - Jido, Daisuke

AU - Lee, Su Houng

N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

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.

UR - http://www.scopus.com/inward/record.url?scp=80052213459&partnerID=8YFLogxK

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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 -