1.

New charged resonance Zc(4100) : the spectroscopic parameters and width
/ Sundu, H. ; Agaev, S. S. ; Azizi, K.
The mass, coupling and width of the newly observed charged resonance Zc(4100) are calculated by treating it as a scalar fourquark system with a diquark–antidiquark structure. [...]
Published in EPJC 79 (2019) 215
10.1140/epjc/s1005201967370
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2.

Weak decays of the axialvector tetraquark ${T}_{bb;\overline{u}\overline{d}}^{}$
/ Agaev, S. S. ; Azizi, K. ; Barsbay, B. ; Sundu, H.
The weak decays of the axialvector tetraquark ${T}_{bb;\overline{u}\overline{d}}^{}$ to the scalar state ${Z}_{bc;\overline{u}\overline{d}}^{0}$ are investigated using the QCD threepoint sum rule approach. [...]
Published in Physical Review D 99 (2019)
10.1103/PhysRevD.99.033002
arXiv:1809.07791
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3.

The nonet of the light scalar tetraquarks: The mesons a 0 (980) and K0⁎(800)
/ Agaev, S.S. ; Azizi, K. ; Sundu, H.
The spectroscopic parameters and partial decay widths of the light mesons a0(980) and K0⁎(800) are calculated by treating them as scalar diquark–antidiquark states. [...]
Published in Physics letters B 789 (2019) 405412
10.1016/j.physletb.2018.12.059
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4.

The doubly charmed pseudoscalar tetraquarks Tcc;s¯s¯++ and Tcc;d¯s¯++
/ Agaev, S.S. ; Azizi, K. ; Barsbay, B. ; Sundu, H.
The mass and coupling of the doubly charmed JP=0− diquark–antidiquark states Tcc;s¯s¯++ and Tcc;d¯s¯++ that bear two units of the electric charge are calculated by means of QCD twopoint sum rule method. [...]
Published in Nuclear Physics B 939 (2019) 130144
10.1016/j.nuclphysb.2018.12.021
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5.

Resonance $Y\left(4660\right)$ as a vector tetraquark and its strong decay channels
/ Sundu, H. ; Agaev, S. S. ; Azizi, K.
The spectroscopic parameters and partial widths of the strong decay channels of the vector meson $Y\left(4660\right)$ are calculated by treating it as a bound state of a diquark and antidiquark. [...]
Published in Physical Review D 98 (2018)
10.1103/PhysRevD.98.054021
arXiv:1805.04705
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6.

The strong decays of the light scalar mesons f 0 (500) and f 0 (980)
/ Agaev, S.S. ; Azizi, K. ; Sundu, H.
The partial width of the decay channels f0(500)→ππ , f0(980)→ππ and f0(980)→KK¯ are calculated using QCD lightcone sum rules method and a technique of the soft meson approximation. [...]
Published in Physics letters B (2018)
10.1016/j.physletb.2018.07.042
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7.

The structure, mixing angle, mass and couplings of the light scalar f 0 (500) and f 0 (980) mesons
/ Agaev, S.S. ; Azizi, K. ; Sundu, H.
The mixing angle, mass and couplings of the light scalar mesons f0(500) and f0(980) are calculated in the framework of QCD twopoint sum rule approach by assuming that they are tetraquarks with diquark–antidiquark structures. [...]
Published in Physics letters B (2018)
10.1016/j.physletb.2018.03.085
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8.

New ${a}_{1}\left(1420\right)$ state: Structure, mass, and width
/ Sundu, H. ; Agaev, S. S. ; Azizi, K.
The structure, spectroscopic parameters and width of the resonance with quantum numbers ${J}^{PC}={1}^{++}$ discovered by the COMPASS Collaboration and classified as the ${a}_{1}\left(1420\right)$ meson are examined in the context of QCD sum rule method. [...]
Published in Phys. Rev. D 97 (2018)
10.1103/PhysRevD.97.054001
arXiv:1711.05977
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9.

Testing the doubly charged charm–strange tetraquarks
/ Agaev, S. S. ; Azizi, K. ; Sundu, H.
The spectroscopic parameters and decay channels of the doubly charged scalar, pseudoscalar and axialvector charm–strange tetraquarks Zc¯s=[sd][u¯c¯] are explored within framework of the QCD sum rule method. [...]
Published in EPJC 78 (2018) 141
10.1140/epjc/s1005201856404
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10.

Spectroscopic parameters and decays of the resonance Zb(10610)
/ Agaev, S. S. ; Azizi, K. ; Sundu, H.
The resonance Zb(10610) is investigated as the diquark–antidiquark Zb=[bu][bd¯] state with spin–parity JP=1+ . [...]
Published in EPJC 77 (2017) 836
10.1140/epjc/s1005201754215
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