Analysis of the Y(2175) as a tetraquark state with QCD sum rules
نویسنده
چکیده
In this article, we take the point of view that the Y (2175) be a tetraquark state which consists of the color octet constituents, and calculate its mass and decay constant within the framework of the QCD sum rule approach. The value of the Y (2175) is consistent with the experimental data, there may be some tetraquark components in the state Y (2175). The tetraquark states may consist of the color octet constituents rather than the diquark pairs. PACS number: 12.38.Aw, 12.38.Qk
منابع مشابه
Analysis of Y(2175) as a tetraquark state with QCD sum rules
In this article, we take the point of view that Y (2175) be a tetraquark state which consists of color octet constituents, and calculate its mass and decay constant within the framework of the QCD sum rule approach. We release standard criterion in the QCD sum rules approach and take more phenomenological analysis, the value of the mass of Y (2175) is consistent with experimental data; there ma...
متن کاملOn the ππ contribution to the QCD sum rules for the light tetraquark
We perform a QCD sum rule analysis for the light tetraquark taken into account the contribution arising from the two pion intermediate state. With the interpolating currents of the different chiral combinations of scalar and pseudoscalar diquarks and without including the form factor in the tetraquark–two pion vertex, it is shown that interpolating current with maximum chirality has a large cou...
متن کاملAnalysis of the X(1576) as a tetraquark state with the QCD sum rules
In this letter, we take the point of view that the X(1576) be 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 rules approach. The numerical value of the mass mX = (1.66±0.14)GeV is consistent with the experimental data, there may be some tetraquark component in the vector meson X(1576). PA...
متن کاملMass spectrum of the vector hidden charmed and bottomed tetraquark states
The Babar, Belle, CLEO, D0, CDF and FOCUS collaborations have discovered (or confirmed) a large number of charmonium-like states X(3940), X(3872), Y (4260), Y (4008), Y (3940), Y (4325), Y (4360), Y (4660), etc, and revitalized the interest in the spectroscopy of the charmonium states [1, 2, 3, 4]. Many possible assignments for those states have been suggested, such as multiquark states (whethe...
متن کاملv 2 2 5 M ar 2 00 6 D s 0 ( 2317 ) as a tetraquark state with QCD sum rules in heavy quark limit
In this article, we take the point of view that the charmed scalar meson Ds0(2317) be a tetraquark state and devote to calculate its mass within the framework of the QCD sum rules approach in the heavy quark limit. The numerical values for the mass of the Ds0(2317) are consistent with the experimental data, there must be some tetraquark component in the scalar meson Ds0(2317). Detailed discussi...
متن کامل