Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Shahin S"'
Publikováno v:
Physical Review D. 101
The spectroscopic parameters and decay channels of the scalar tetraquark Tbb;u¯s¯- (in what follows Tb:s¯-) are investigated in the framework of the QCD sum rule method. The mass and coupling of the Tb:s- are calculated using the two-point sum rul
Publikováno v:
Physical Review D. 100
We investigate the semileptonic decay of the scalar tetraquark ${T}_{bs;\overline{u}\overline{d}}^{\ensuremath{-}}$ to final state ${T}_{cs;\overline{u}\overline{d}}^{0}l{\overline{\ensuremath{\nu}}}_{l}$, which proceeds due to the weak transition $b
Publikováno v:
Physical Review D. 99
The strong decays of the pseudoscalar and scalar double-charmed tetraquarks ${T}_{cc;\overline{u}\overline{d}}^{+}$ and ${\stackrel{\texttildelow{}}{T}}_{cc;\overline{u}\overline{d}}^{+}$ are investigated in the framework of the QCD sum rule method.
Publikováno v:
Physical Review D. 98
The spectroscopic parameters and partial widths of the strong decay channels of the vector meson $Y(4660)$ are calculated by treating it as a bound state of a diquark and antidiquark. The mass and coupling of the ${J}^{PC}={1}^{\ensuremath{-}\ensurem
Publikováno v:
Physical Review D. 97
The structure, spectroscopic parameters and width of the resonance with quantum numbers JPC=1++ discovered by the COMPASS Collaboration and classified as the a1(1420) meson are examined in the context of QCD sum rule method. In the calculations the a
Publikováno v:
Physical Review D. 96
The LHCb Collaboration recently observed five narrow ${\mathrm{\ensuremath{\Omega}}}_{c}^{0}$ resonances and measured their masses and widths through the decays ${\mathrm{\ensuremath{\Omega}}}_{c}^{0}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}
Publikováno v:
Physical Review D. 96
Exploration of the resonances ${Z}_{c}(3900)$ and $Z(4430)$ are performed by assuming that they are the ground state and first radial excitation of the same tetraquark with ${J}^{P}={1}^{+}$. The mass and current coupling of the ${Z}_{c}(3900)$ and $
Publikováno v:
Physical Review D. 95
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¯s¯] diquark-antidiquark states with the spin-parity JP=1+, resp
Publikováno v:
Physical Review D. 93
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 ${X}_{b}{X}_{b}\ensuremath{\rho}$ and ${X}_{c}{X}_{c}\ensuremath{\rho}$ ar
Publikováno v:
Physical Review D. 93
The width of the newly observed exotic state ${X}_{b}(5568)$ is calculated via its dominant strong decay to ${B}_{s}^{0}{\ensuremath{\pi}}^{+}$ using the QCD sum rule method on the light cone in conjunction with the soft-meson approximation. To this