Is D s (2700) a charmed tetraquark state?
نویسندگان
چکیده
منابع مشابه
Is Ds(2700) a charmed tetraquark state?
In this article, we take the point of view that the Ds(2700) be a tetraquark state, which consists of a scalar diquark and a vector antidiquark, and calculate its mass in the framework of the QCD sum rules approach. The numerical result indicates that the mass of the vector charmed tetraquark state is about MV = 3.75GeV, which is about 1GeV larger than the experimental data. If there are some t...
متن کامل( 2700 ) a charmed tetraquark state ?
In this article, we take the point of view that the Ds(2700) be a tetraquark state, which consists of a scalar diquark and a vector antidiquark, and calculate its mass with the QCD sum rules. The numerical result indicates that the mass of the vector charmed tetraquark state is about MV = (3.75±0.18)GeV or MV = (3.71 ± 0.15)GeV from different sum rules, which is about 1GeV larger than the exper...
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Very recently, the D0 collaboration has reported the observation of a narrow structure, X(5568), in the decay process X(5568) → B sπ using the 10.4fb−1 data of pp̄ collision at √ s = 1.96 TeV. This structure is of great interest since it is the first hadronic state with four different valence quark flavors, b, s, u, d. In this work, we present a tetraquark interpretation of the X(5568). Based on...
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We propose a phenomenological three component model describing the decay amplitude of the process D s → 3π. The first component is a constant background, the second one is a Breit-Wigner amplitude associated to a quasi two-body f0(980)π + state and the third one another Breit-Wigner amplitude corresponding to a possible quasi two-body ρ(770)π state. We show that it is possible to reproduce the ...
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ژورنال
عنوان ژورنال: Chinese Physics C
سال: 2008
ISSN: 1674-1137
DOI: 10.1088/1674-1137/32/10/006