scholarly journals Reanalysis of Ωc→Ξc+K- Decay in QCD

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
T. M. Aliev ◽  
S. Bilmis ◽  
M. Savci
Keyword(s):  
Experimental Data ◽  
Strong Coupling ◽  
Light Cone ◽  
Sum Rules ◽  
Negative Parity ◽  
Coupling Constants ◽  
Qcd Sum Rules ◽  
Quantum Numbers ◽  
Decay Widths

The strong coupling constants of newly observed Ωc0 baryons with spins J=1/2 and J=3/2 decaying into Ξc+K- are estimated within light cone QCD sum rules. The calculations are performed within two different scenarios on quantum numbers of Ωc baryons: (a) all newly observed Ωc baryons are negative parity baryons; that is, the Ωc(3000), Ωc(3050), Ωc(3066), and Ωc(3090) have quantum numbers JP=1/2- and JP=3/2- states, respectively; (b) the states Ωc(3000) and Ωc(3050) have quantum numbers JP=1/2- and JP=1/2+, while the states Ωc(3066) and Ωc(3090) have the quantum numbers JP=3/2- and JP=3/2+, respectively. By using the obtained results on the coupling constants, we calculate the decay widths of the corresponding decay. The results on decay widths are compared with the experimental data of LHC Collaboration. We found out that the predictions on decay widths within these scenarios are considerably different from the experimental data; that is, both considered scenarios are ruled out.

scholarly journals Strong Coupling Constants of Negative Parity Heavy Baryons with π and K Mesons

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
T. M. Aliev ◽  
S. Bilmis ◽  
M. Savci
Keyword(s):  
Strong Coupling ◽  
Light Cone ◽  
Sum Rules ◽  
Negative Parity ◽  
Coupling Constants ◽  
Positive Parity ◽  
Qcd Sum Rules ◽  
Heavy Baryons ◽  
K Mesons

The strong coupling constants of negative parity heavy baryons belonging to sextet and antitriplet representations of SUf(3) with light π and K mesons are estimated within the light cone QCD sum rules. It is observed that each class of the sextet-sextet, sextet-antitriplet, and antitriplet-antitriplet transitions can be described by only one corresponding function. The pollution arising from the positive to positive, positive to negative, and negative to positive parity baryons transitions is eliminated by constructing sum rules for different Lorentz structures. The obtained coupling constants are compared with the ones for the positive parity heavy baryons.

Strong Coupling Constants of the Octet Baryons to K and π Mesons in Light Cone QCD Sum Rules

2007 ◽  
Author(s):  
T. M. Aliev ◽  
A. Ozpineci ◽  
S. Yakovlev ◽  
V. S. Zamiralov ◽  
Pietro Colangelo ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Light Cone ◽  
Sum Rules ◽  
Coupling Constants ◽  
Qcd Sum Rules ◽  
Octet Baryons

scholarly journals Vector meson-baryon strong coupling constants in light cone QCD sum rules

2009 ◽  
Vol 80 (1) ◽  
Author(s):  
T. M. Aliev ◽  
A. Özpineci ◽  
M. Savcı ◽  
V. S. Zamiralov
Keyword(s):  
Vector Meson ◽  
Strong Coupling ◽  
Light Cone ◽  
Sum Rules ◽  
Coupling Constants ◽  
Qcd Sum Rules

scholarly journals Strong coupling constants of doubly heavy baryons with vector mesons in QCD

2020 ◽  
Vol 80 (10) ◽  
Author(s):  
T. M. Aliev ◽  
K. Şimşek
Keyword(s):  
Experimental Data ◽  
Strong Coupling ◽  
Light Cone ◽  
Particle Distribution ◽  
Sum Rules ◽  
Magnetic Coupling ◽  
Coupling Constants ◽  
Vector Mesons ◽  
Heavy Baryons ◽  
Light Vector

AbstractUsing the most general form of the interpolating current for baryons, the strong electric and magnetic coupling constants of light vector mesons $$ \rho $$ ρ and $$ K^* $$ K ∗ with doubly heavy baryons are computed within the light-cone sum rules. We consider 2- and 3-particle distribution amplitudes of the aforementioned vector mesons. The obtained results can be useful in the analysis of experimental data on the properties of doubly heavy baryons conducted at LHC.

QCD SUM RULES FOR THE $Z_c^+(3900)$ STATE

2014 ◽  
Vol 26 ◽  
pp. 1460069 ◽  
Author(s):  
F. S. NAVARRA ◽  
J. M. DIAS ◽  
M. NIELSEN ◽  
C. M. ZANETTI
Keyword(s):  
Experimental Data ◽  
Sum Rules ◽  
Coupling Constants ◽  
Tetraquark State ◽  
Point Function ◽  
Qcd Sum Rules ◽  
Decay Widths ◽  
Structure Formula ◽  
Good Agreement

We use the QCD sum rules to study the recently observed charmonium-like structure [Formula: see text] as a tetraquark state. We evaluate the three-point function and extract the coupling constants of the [Formula: see text] and [Formula: see text] vertices and the corresponding decay widths in these channels. The results obtained are in good agreement with the experimental data and supports to the tetraquark picture of this state.

scholarly journals Determination of the possible quantum numbers for the newly observed Ξb(6227)0 state

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
K. Azizi ◽  
Y. Sarac ◽  
H. Sundu
Keyword(s):  
Experimental Data ◽  
Excited State ◽  
Excited States ◽  
Light Cone ◽  
Sum Rules ◽  
Lhcb Collaboration ◽  
Coupling Constants ◽  
Final State ◽  
Quantum Numbers

Abstract The LHCb Collaboration recently reported the observation of a new excited bottom baryon Ξb(6227)0 and announced an improvement in the measurements related to the previously observed Ξb(6227)− state. We conduct an analysis for Ξb(6227)0 state considering it as isospin partner of the Ξb(6227)− resonance and possibly 1P or 2S excited state with spin J = $$ \frac{3}{2} $$ 3 2 . The corresponding masses for both possibilities have consistent results with the experimental data, indicating that only with the mass sum rules, one can not make exact decision on the nature and quantum numbers of this state. To go further, the decays of these possible excited states to $$ {\Xi}_b^{-}{\pi}^{+} $$ Ξ b − π + final state are also considered and the relevant strong coupling constants are extracted from the light cone sum rules. The obtained decay width values support the possibility of Ξb(6227)0 to be the 1P excited state of Ξb(5945)0 baryon.

scholarly journals VECTOR MESON DOMINANCE AND RADIATIVE DECAYS OF HEAVY SPIN-3/2 BARYONS TO HEAVY SPIN-1/2 BARYONS

2012 ◽  
Vol 27 (11) ◽  
pp. 1250054 ◽  
Author(s):  
T. M. ALIEV ◽  
M. SAVCI ◽  
V. S. ZAMIRALOV
Keyword(s):  
Vector Meson ◽  
Light Cone ◽  
Radiative Decay ◽  
Sum Rules ◽  
Coupling Constants ◽  
Radiative Decays ◽  
Vector Meson Dominance ◽  
Qcd Sum Rules ◽  
Light Vector ◽  
Decay Widths

Using the calculated values of the strong coupling constants of the heavy sextet spin-3/2 baryons to sextet and antitriplet heavy spin-1/2 baryons with light vector mesons within the light cone QCD sum rules method, and vector meson dominance assumption, the radiative decay widths are calculated. These widths are compared with the "direct" radiative decay widths predicted in the framework of the light cone QCD sum rules.

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