scholarly journals Hybrid Meson Interpretation of the Exotic Resonance π11600

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Azzeddine Benhamida ◽  
Lahouari Semlala
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Hybrid Meson

The exotic JPC=1−+resonance π11600 is examined in the framework of the Quark Model with Constituent Gluon (QMCG). We report the possibility of interpreting that resonance as qq¯g meson, with a masse ≃1.65−0.04+0.05 GeV, and a decay width to ρπ≃0.28−0.09+0.14 GeV.

scholarly journals The $$\varOmega _{ c}$$-puzzle solved by means of quark model predictions

2019 ◽  
Vol 79 (12) ◽  
Author(s):  
E. Santopinto ◽  
A. Giachino ◽  
J. Ferretti ◽  
H. García-Tecocoatzi ◽  
M. A. Bedolla ◽  
...  
Keyword(s):  
Harmonic Oscillator ◽  
Quark Model ◽  
Quantum Number ◽  
Decay Width ◽  
Degrees Of Freedom ◽  
Model Predictions ◽  
Suitable Environment ◽  
Important Milestone

AbstractThe observation of five $$\varOmega _c $$Ωc= ssc states by LHCb [Aaij et al. Phys. Rev. Lett. 118, 182001 (2017)] and the confirmation of four of them by Belle [Yelton et al. Phys. Rev. D 97, 051102 (2018)], may represent an important milestone in our understanding of the quark organization inside hadrons. By providing results for the spectrum of $$\varOmega _{ c}$$Ωc baryons and predictions for their $$\varXi _{ c}^{+}K^{-}$$Ξc+K- and $$\varXi _{ c}'^{+}K^{-}$$Ξc′+K- decay amplitudes within an harmonic oscillator based model, we suggest a possible solution to the $$\varOmega _{c}$$Ωc quantum number puzzle and we extend our mass and decay width predictions to the $$\varOmega _b$$Ωb states. Finally, we discuss why the set of $$\varOmega _{ c(b)}$$Ωc(b) baryons is the most suitable environment to test the validity of three-quark and quark–diquark effective degrees of freedom.

scholarly journals STRUCTURE OF Λ*(1405) AND THE Λ*-MESON-BARYON COUPLING CONSTANTS

2011 ◽  
Vol 26 (03n04) ◽  
pp. 619-621 ◽  
Author(s):  
C. S. AN ◽  
B. SAGHAI
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Constituent Quark ◽  
Constituent Quark Model ◽  
Coupling Constants ◽  
Strong Decay ◽  
Quark Structure

Within an extended chiral constituent quark model, three- and five-quark structure of the S01 resonance Λ(1405) is investigated with respect to the coupling constants [Formula: see text] and [Formula: see text]. Our findings corroborate with about 50% of five-quark admixture in the Λ(1405) needed in reproducing the strong decay width, ΓΛ(1405)→(Σπ)°.

scholarly journals HYBRID STATES FROM CONSTITUENT GLUE MODEL

2008 ◽  
Vol 23 (32) ◽  
pp. 5229-5250 ◽  
Author(s):  
FARIDA IDDIR ◽  
LAHOUARI SEMLALA
Keyword(s):  
Quark Model ◽  
Hybrid Meson ◽  
Hybrid Mesons ◽  
Decay Widths ◽  
The Masses

The hybrid meson is one of the most interesting new hadron species beyond the naive quark model. It acquire great attention both from the theoretical and experimental efforts. Many good candidates have been claimed to be observed, but there is no absolute confirmation about the existence of hybrid mesons. In the present work we propose new calculations of the masses and decay widths of the hybrid mesons in the context of constituent gluon model.

Dynamical Calculation of Θ+ Mass and Decay width in the Quark Model

2012 ◽  
Vol 51 (8) ◽  
pp. 2353-2358 ◽  
Author(s):  
M. Rostampour ◽  
H. Saadat ◽  
H. Farahani
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Dynamical Calculation

scholarly journals Decay width of the d ⁎ (2380)→ NNπ process in a chiral constituent quark model

2017 ◽  
Vol 769 ◽  
pp. 223-226 ◽  
Author(s):  
Yubing Dong ◽  
Fei Huang ◽  
Pengnian Shen ◽  
Zongye Zhang
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Constituent Quark ◽  
Constituent Quark Model

scholarly journals On leptonic width of X(4260)

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Qin-Fang Cao ◽  
Hong-Rong Qi ◽  
Guang-Yi Tang ◽  
Yun-Feng Xue ◽  
Han-Qing Zheng
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Cross Sections ◽  
Leptonic Decay ◽  
Numerical Analyses ◽  
Interference Effects ◽  
O 10

AbstractNew measurements on cross sections in $$e^+e^-\rightarrow J/\psi \pi ^+\pi ^-$$ e + e - → J / ψ π + π - , $$h_c\pi ^+\pi ^-$$ h c π + π - , $$D^0D^{*-}\pi ^++c.c.$$ D 0 D ∗ - π + + c . c . , $$\psi (2S)\pi ^+\pi ^-$$ ψ ( 2 S ) π + π - , $$\omega \chi _{c0}$$ ω χ c 0 and $$J/\psi \eta $$ J / ψ η channels have been carried out by BESIII, Belle and BABAR experiments, as well as in the $$D_s^{*+}D_s^{*-}$$ D s ∗ + D s ∗ - channel. We perform extensive numerical analyses by combining all these data available, together with those in $$D^+D^{*-}+c.c.$$ D + D ∗ - + c . c . and $$D^{*+}D^{*-}$$ D ∗ + D ∗ - channels. Though the latter show no evident peak around $$\sqrt{s}=4.230$$ s = 4.230 GeV, the missing X(4260) is explained as that it is concealed by the interference effects of the well established charmonia $$\psi (4040)$$ ψ ( 4040 ) , $$\psi (4160)$$ ψ ( 4160 ) and $$\psi (4415)$$ ψ ( 4415 ) . Our analyses reveal that the leptonic decay width of X(4260) ranges from $$\mathcal {O}(10^2)$$ O ( 10 2 ) eV to $$\mathcal {O}(1)$$ O ( 1 ) keV, and hence it is probably explained in the conventional quark model picture. That is, the X(4260) may well be interpreted as a mixture of $$4^3S_1$$ 4 3 S 1 and $$3^3D_1$$ 3 3 D 1 ($$2^3D_1$$ 2 3 D 1 ) states.

scholarly journals The newly observed $$\Lambda _b(6072)^0$$ structure and its $$\rho $$-mode nonstrange partners

2020 ◽  
Vol 80 (8) ◽  
Author(s):  
Wei Liang ◽  
Qi-Fang Lü
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Final States ◽  
Strong Decay ◽  
Total Decay Width ◽  
Diquark Model ◽  
Mode Excitation

Abstract Inspired by the newly observed $$\Lambda _b(6072)$$Λb(6072) structure, we investigate its strong decay behaviors under various assignments within the $$^3P_0$$3P0 model. Compared with the mass and total decay width, our results suggest that the $$\Lambda _b(6072)$$Λb(6072) can be regarded as the lowest $$\rho $$ρ-mode excitation in $$\Lambda _b$$Λb family. Then, the strong decays of $$\rho $$ρ-mode nonstrange partners for the $$\Lambda _b(6072)$$Λb(6072) are calculated. It is found that the $$J^P=5/2^-$$JP=5/2-$$\Lambda _b$$Λb and $$\Lambda _c$$Λc states are relatively narrow, and mainly decay into the $$\Sigma _b^{(*)} \pi $$Σb(∗)π and $$\Sigma _c^{(*)} \pi $$Σc(∗)π final states, respectively. These two states have good potentials to be observed in future experiments, which may help us to distinguish the three-quark model and diquark model.

scholarly journals THE PENTAQUARKS IN THE LINEAR MOLECULAR HEPTAQUARK MODEL

2005 ◽  
Vol 20 (19) ◽  
pp. 4593-4598
Author(s):  
P. Bicudo
Keyword(s):  
Quark Model ◽  
Decay Width ◽  
Ground State ◽  
Short Range ◽  
Molecular System ◽  
Short Range Interaction ◽  
Range Interaction

In this talk, multiquarks are studied microscopically in a standard quark model. In pure ground-state pentaquarks the short-range interaction is computed and it is shown to be repulsive. An additional quark-antiquark pair is then considered, and this is suggested to produce linear molecular system, with a narrow decay width. The quarks assemble in three hadronic clusters, and the central hadron provides stability. The possible crypto-heptaquark hadrons with exotic pentaquark flavours, with strange, charmed and bottomed quarks, are predicted.

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