Browsing by Author "Agaev, Shahin S."
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Application of the QCD light cone sum rule to tetraquarks: The strong vertices XbXb rho and XcXc rho
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (American Physical Society, 2016-06-30)The full version of the QCD light-cone sum rule method is applied to tetraquarks containing a single heavy b or c quark. To this end, investigations of the strong vertices XbXb rho and XcXc rho are performed, where X-b = ... -
Charmed partner of the exotic X(5568) state and its properties
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (American Physical Society, 2016-05-06)The mass, decay constant, and width of a hypothetical charmed partner X-c of the newly observed exotic X-b(5568) state are calculated using the technique of the QCD sum rule method. The X-c = [su][(c) over bar(d) over bar] ... -
Decay modes of the scalar exotic meson Tbs;(u)over-bar(d)over-bar(-)
Azizi, Kazem; Agaev, Shahin S.; Sundu, Hayriye (American Physical Society, 2019)We investigate the semileptonic decay of the scalar tetraquark T-bs;(u) over bar(d) over bar(-) to final state T(cs;(u) over bar(d) over bar)l (nu) over bar (0)(l), which proceeds due to the weak transition b -> cl (nu) ... -
Decay widths of the excited Omega(b) baryons
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (American Physical Society, 2017-11)The LHCb Collaboration recently observed five narrow Omega(0)(c) resonances and measured their masses and widths through the decays Omega(0)(c) -> Xi(+)(c) K-. Motivated by this discovery, and also by the fact that the ... -
Double-heavy axial-vector tetraquark Tbc;u¯d
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (Elsevier, 2020)The mass and coupling of the axial-vector tetraquark Tbc;u¯d¯ 0 (in a short form Tbc 0) are calculated by means of the QCD two-point sum rule method. In computations we take into account contributions arising from various ... -
The doubly charmed pseudoscalar tetraquarks T-cc(;(s)over-bar(s)over-bar)++ and T-cc(;(d)over-bar<)(s()over bar)>(++)
Agaev, Shahin S.; Azizi, Kazem; Barsbay, Birten; Sundu, Hayriye (Elsevier, 2019-02)The mass and coupling of the doubly charmed J(P) = 0(-) diquark-antidiquark states T-cc (s) over bar(s) over bar(++) and T-cc;(d) over bar<(s)over (++)(bar)(>) that bear two units of the electric charge are calculated by ... -
Exploring the resonances X(4140) and X(4274) through their decay channels
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (American Physical Society, 2017-06-06)Investigation of the resonances X(4140) and X(4274), which were recently confirmed by the LHCb Collaboration [1], is carried out by treating them as the color triplet and sextet [cs] [(c) over bar (s) over bar] diquark-antidiquark ... -
Exploring X(5568) as a meson molecule
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (Springer Verlag, 2016-10)The parameters, i.e. the mass and current coupling of the exotic X(5568) state observed by the D0 Collaboration as well as the decay width of the process X→B0sπ+X→Bs0π+ , are explored using the BK¯¯¯¯¯BK¯ molecule ... -
Interpretation of the new Omega(0)(c) states via their mass and width
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (Springer, 2017-06)The masses and pole residues of the ground and first radially excited Omega(0)(c) states with spin-parities J(P) = 1/2(+), 3/2(+), as well as P-wave Omega(0)(c) with J(P) = 1/2(-), 3/27(-) are calculated by means of the ... -
Light axial-vector and vector resonances X(2100) and X(2239)
Azizi, Kazem; Agaev, Shahin S.; Sundu, Hayriye (Elsevier, 2019)We study features of the resonances X(2100) and X(2239) by treating them as the axial-vector and vector tetraquarks with the quark content ss (ss) over bar, respectively. The spectroscopic parameters of these exotic mesons ... -
Mass and decay constant of the newly observed exotic X(5568) state
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (American Physical Society, 2016-04-20)The mass and decay constant of the X(5568) state newly observed by the D0 Collaboration are computed within the two-point sum rule method using the diquark-antidiquark interpolating current. In calculations, the vacuum ... -
New a(1)(1420) state: structure, mass, and width
Sundu, Hayriye; Agaev, Shahin S.; Azizi, Kazem (American Physical Society, 2018-03)The structure, spectroscopic parameters and width of the resonance with quantum numbers J(PC) = 1(++) discovered by the COMPASS Collaboration and classified as the a(1)(1420) meson are examined in the context of QCD sum ... -
New charged resonance Z−c(4100) : the spectroscopic parameters and width
Sundu, Hayriye; Agaev, Shahin S.; Azizi, Kazem (Springer, 2019-03)The mass, coupling and width of the newly observed charged resonance Z−c(4100) are calculated by treating it as a scalar four-quark system with a diquark–antidiquark structure. The mass and coupling of the state ... -
The nonet of the light scalar tetraquarks: The mesons a(0)(980) and K-0*(800)
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (Elsevier, 2019-02)The spectroscopic parameters and partial decay widths of the light mesons a(0)(980) and K-0*(800) are calculated by treating them as scalar diquark-antidiquark states. The masses and couplings of the mesons are found in ... -
On the nature of the newly discovered omega states
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (EPL Association, 2017-06)The mass and residue of the ground-state, as well as the first orbital and radial excitations of the heavy Omega(Q) baryons with Q being b or c quark, for both J = 1/2 and J = 3/2 are calculated by means of the QCD two-point ... -
Open charm-bottom axial-vector tetraquarks and their properties
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (Springer, 2017-05-18)The charged axial-vector J (P) = 1(+) tetraquarks Z(q) = [cq][ (b) over bar(q) over bar] and Z(s) = [cs][ (b) over ar(s) over bar] with the open charm-bottom contents are studied in the diquark-antidiquark model. The masses ... -
Open charm-bottom scalar tetraquarks and their strong decays
Agaev, Shahin S.; Azizi, Kazem; Sundu, Hayriye (American Physical Society, 2017-02)The mass and meson- current coupling of the diquark- antidiquark states with the quantum numbers J(P) = 0(+) and quark contents Z(q) = [cq] [(b) over bar (q) over bar] and Z(s) = [cs] [(b) over bar(s) over bar] are calculated ... -
Probing an axial-vector tetraquark Z(s) via its semileptonic decay Z(s) -> X(4274)(I)over-bar nu(I)
Sundu, Hayriye; Barsbay, B.; Agaev, Shahin S.; Azizi, Kazem (Springer, 2018-07)The semileptonic decays of the open charm-bottom axial-vector tetraquark Z(s) = [cs][(b) over bar(s) over bar] to X(4274) (l) over bar nu(l) = e, mu, tau are explored by means of the QCD three-point sum rule method. Both ... -
Probing an axial-vector tetraquark Zs via its semileptonic decay Zs → X(4274) l¯ νl
Sundu, Hayriye; Barsbay, Birten; Agaev, Shahin S.; Azizi, Kazem (Springer, 2018-07)The semileptonic decays of the open charm-bottom axial-vector tetraquark Zs= [cs] [b¯ s¯] to X(4274) l¯ νl , l= e, μ, τ are explored by means of the QCD three-point sum rule method. Both Zs and X(4274) = [cs] [c¯ s¯] are ... -
Resonance X(5568) as an exotic axial-vector state
Agaev, Shahin S.; Azizi, Kazem; Barsbay, Birten; Sundu, Hayriye (Springer, 2017-01-23)The mass and meson-current coupling constant of the resonance X(5568), as well as the width of the decay X(5568) -> B-s*pi are calculated by modeling the exotic X(5568) resonance as a diquark-antidiquark state X- b = ...
