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Analysis of X(1576) as a Tetraquark State with the QCD Sum Rules

Wang Zhi-Gang1 and Wan Shao-Long2

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We take the viewpoint that X(1576) is the tetraquark state which consists of a scalar diquark and an anti-scalar-diquark in relative P-wave, and calculate its mass in the framework of the QCD sum rule approach. The numerical value of the mass mX = (1.66±0.14) GeV is consistent with the experimental data. There might be some tetraquark components in the vector meson X(1576).


PACS

12.38.Aw General properties of QCD (dynamics, confinement, etc.)

14.65.-q Quarks

14.40.Cs Other mesons with S=C=0, mass<2.5 GeV

11.55.Hx Sum rules

Subjects

Particle physics and field theory

Dates

Issue 12 (December 2006)

Received 27 September 2006



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