Exploring X(5568) as a meson molecule

Agaev, S. S.; Azizi, K.; Sundu, H.

doi:10.1140/epjp/i2016-16351-8

Cited by 41 publications

(33 citation statements)

References 41 publications

(47 reference statements)

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“…It has been proposed to be either a tetraquark state [3][4][5][6][7][8][9][10][11][12][13][14], a triangular singularity [15], or a molecular state [16]. Although these theoretical studies favor the existence of a state that can be identified as the X (5568), some other studies have yielded negative conclusions.…”

Section: Introductionmentioning

confidence: 99%

$$B_s\pi $$ B s π – $$B\bar{K}$$ B K ¯ interactions in finite volume and X(5568)

Ren

Geng

2017

Eur. Phys. J. C

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The recent observation of X (5568) by the D0 Collaboration has aroused a lot of interest both theoretically and experimentally. In the present work, we first point out that X (5568) and D * s0 (2317) cannot simultaneously be of molecular nature, from the perspective of heavy-quark symmetry and chiral symmetry, based on a previous study of the lattice QCD scattering lengths of DK and its coupled channels. Then we compute the discrete energy levels of the B s π and BK system in finite volume using unitary chiral perturbation theory. The comparison with the latest lattice QCD simulation, which disfavors the existence of X (5568), supports our picture where the B s π and BK interactions are weak and X (5568) cannot be a B s π and BK molecular state. In addition, we show that the extended Weinberg compositeness condition also indicates that X (5568) cannot be a molecular state made from B s π and BK interactions.

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Section: Introductionmentioning

confidence: 99%

$$B_s\pi $$ B s π – $$B\bar{K}$$ B K ¯ interactions in finite volume and X(5568)

Ren

Geng

2017

Eur. Phys. J. C

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“…These two models were widely used to explore features of the exotic states. Thus, in theoretical studies aimed to explore the exotic X(5568) state and calculate its parameters both of these models were employed [15][16][17]. Investigation of the new family of the four-quark states was extended in [18] by considering a charmed partner of X(5568), i.e.…”

Section: Introductionmentioning

confidence: 99%

The Mass and Current-Meson Coupling Constant of the Exotic X(3872) State from QCD Sum Rules

Sundu

2016

SDÜ Fen Bil Enst Der

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Abstract:The mass and current-meson coupling constant of the exotic X(3872) state are computed within the two-point sum rule method using the diquark-antidiquark and molecule interpolating currents. In calculations the quark, gluon and mixed vacuum condensates up to ten dimensions are taken into account. Within the diquark-antidiquark picture for the mass of the X(3872) state we obtain m X = 3873 MeV , which is very close to the experimental result of the Belle Collaboration. The molecule model leads for m X to the prediction that slightly exceeds the experimental data. We compare our predictions for the mass and coupling constant with available experimental data and other theoretical results. KRD Toplam Kurallarında Ekzotik X(3872) Durumunun Kütle ve Akım-Mezon Kuplaj SabitiAnahtar Kelimeler Ekzotik hadron, KRD toplam kuralları, Kütle, Akım-Mezon kuplaj sabiti Özet: Ekzotik X(3872) durumunun kütle ve akım-mezon kuplaj sabiti, dikuarkantidikuark ve molekül arakesit akımları kullanılarak iki-nokta toplam kuralları metodu ile hesaplanmıştır. Hesaplamalarda, on boyuta kadar kuark, gluon ve birleşik vakum kondensatları göz önüne alınmıştır. Dikuark-antidikuark akım çerçevesinde X(3872) durumunun kütlesi için, Belleİşbirliginin deneysel sonucu ile oldukça yakın olan m X = 3873 MeV degeri elde edilmiştir. Molekül model, m X öngörüsü için deneysel sonucu kısmen aştıgını ileri sürmektedir. Kütle ve kuplaj sabiti için elde edilen sonuçlar deney dataları ve diger teorik sonuçlar ile karşılaştırılmıştır.

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“…X(5568) as BK molecule and diquark-diquark model are considered in Ref. [25] using QCD two-point and light-cone sum rules, and their results strengthens the diquarkantidiquark picture for the X(5568) state rather than a meson molecule structure. But the authors of Ref.…”

Section: Introductionmentioning

confidence: 83%

Studying the Bound State of the BK¯ System in the Bethe-Salpeter Formalism

Wang

Guo

2019

Advances in High Energy Physics

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In this work, we study the BK molecule in the Bethe-Salpeter (BS) equation approach. With the kernel containing one-particle-exchange diagrams and introducing two different form factors (monopole form factor and dipole form factor) in the vertex, we solve the BS equation numerically in the covariant instantaneous approximation. We investigate the isoscalar and isovector BK systems, and we find X(5568) cannot be a BK molecule.

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Exploring X(5568) as a meson molecule

Cited by 41 publications

References 41 publications

$$B_s\pi $$ B s π – $$B\bar{K}$$ B K ¯ interactions in finite volume and X(5568)

$$B_s\pi $$ B s π – $$B\bar{K}$$ B K ¯ interactions in finite volume and X(5568)

The Mass and Current-Meson Coupling Constant of the Exotic X(3872) State from QCD Sum Rules

Studying the Bound State of the BK¯ System in the Bethe-Salpeter Formalism

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