New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and width
Abstract The mass, coupling and width of the newly observed charged resonance $$ Z_{c}^{-}(4100)$$ Zc-(4100) are calculated by treating it as a scalar four-quark system with a diquark–antidiquark structure. The mass and coupling of the state $$ Z_{c}^{-}(4100)$$ Zc-(4100) are calculated using the QC...
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doaj-67ea4b9d1ff74db0af29798787ef21842020-11-24T21:41:56ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-03-0179311410.1140/epjc/s10052-019-6737-0New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and widthH. Sundu0S. S. Agaev1K. Azizi2Department of Physics, Kocaeli UniversityInstitute for Physical Problems, Baku State UniversityDepartment of Physics, Doǧuş University, Acibadem-KadiköyAbstract The mass, coupling and width of the newly observed charged resonance $$ Z_{c}^{-}(4100)$$ Zc-(4100) are calculated by treating it as a scalar four-quark system with a diquark–antidiquark structure. The mass and coupling of the state $$ Z_{c}^{-}(4100)$$ Zc-(4100) are calculated using the QCD two-point sum rules. In these calculations we take into account contributions of the quark, gluon and mixed condensates up to dimension ten. The spectroscopic parameters of $$ Z_{c}^{-}(4100)$$ Zc-(4100) obtained by this way are employed to study its S-wave decays to $$\eta _c(1S)\pi ^{-}$$ ηc(1S)π- , $$\eta _c(2S)\pi ^{-}$$ ηc(2S)π- , $$D^{0}D^{-}$$ D0D- , and $$ J/\psi \rho ^{-}$$ J/ψρ- final states. To this end, we evaluate the strong coupling constants corresponding to the vertices $$Z_{c}\eta _c(1S)\pi ^{-}$$ Zcηc(1S)π- , $$ Z_{c}\eta _c(2S)\pi ^{-}$$ Zcηc(2S)π- , $$Z_{c}D^{0}D^{-}$$ ZcD0D- , and $$Z_{c}J/\psi \rho ^{-}$$ ZcJ/ψρ- respectively. The couplings $$g_{Z_c\eta _{c1} \pi }$$ gZcηc1π , $$g_{Z_{c}\eta _{c2} \pi }$$ gZcηc2π , and $$g_{Z_{c}DD}$$ gZcDD are computed by means of the QCD three-point sum rule method, whereas $$g_{Z_{c}J/\psi \rho }$$ gZcJ/ψρ is obtained from the QCD light-cone sum rule approach and soft-meson approximation. Our results for the mass $$ m=(4080 \pm 150)~\text {MeV}$$ m=(4080±150)MeV and total width $$\Gamma =(147 \pm 19)~\mathrm { MeV}$$ Γ=(147±19)MeV of the resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) are in excellent agreement with the existing LHCb data.http://link.springer.com/article/10.1140/epjc/s10052-019-6737-0 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
H. Sundu S. S. Agaev K. Azizi |
spellingShingle |
H. Sundu S. S. Agaev K. Azizi New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and width European Physical Journal C: Particles and Fields |
author_facet |
H. Sundu S. S. Agaev K. Azizi |
author_sort |
H. Sundu |
title |
New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and width |
title_short |
New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and width |
title_full |
New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and width |
title_fullStr |
New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and width |
title_full_unstemmed |
New charged resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) : the spectroscopic parameters and width |
title_sort |
new charged resonance $$z_{c}^{-}(4100)$$ zc-(4100) : the spectroscopic parameters and width |
publisher |
SpringerOpen |
series |
European Physical Journal C: Particles and Fields |
issn |
1434-6044 1434-6052 |
publishDate |
2019-03-01 |
description |
Abstract The mass, coupling and width of the newly observed charged resonance $$ Z_{c}^{-}(4100)$$ Zc-(4100) are calculated by treating it as a scalar four-quark system with a diquark–antidiquark structure. The mass and coupling of the state $$ Z_{c}^{-}(4100)$$ Zc-(4100) are calculated using the QCD two-point sum rules. In these calculations we take into account contributions of the quark, gluon and mixed condensates up to dimension ten. The spectroscopic parameters of $$ Z_{c}^{-}(4100)$$ Zc-(4100) obtained by this way are employed to study its S-wave decays to $$\eta _c(1S)\pi ^{-}$$ ηc(1S)π- , $$\eta _c(2S)\pi ^{-}$$ ηc(2S)π- , $$D^{0}D^{-}$$ D0D- , and $$ J/\psi \rho ^{-}$$ J/ψρ- final states. To this end, we evaluate the strong coupling constants corresponding to the vertices $$Z_{c}\eta _c(1S)\pi ^{-}$$ Zcηc(1S)π- , $$ Z_{c}\eta _c(2S)\pi ^{-}$$ Zcηc(2S)π- , $$Z_{c}D^{0}D^{-}$$ ZcD0D- , and $$Z_{c}J/\psi \rho ^{-}$$ ZcJ/ψρ- respectively. The couplings $$g_{Z_c\eta _{c1} \pi }$$ gZcηc1π , $$g_{Z_{c}\eta _{c2} \pi }$$ gZcηc2π , and $$g_{Z_{c}DD}$$ gZcDD are computed by means of the QCD three-point sum rule method, whereas $$g_{Z_{c}J/\psi \rho }$$ gZcJ/ψρ is obtained from the QCD light-cone sum rule approach and soft-meson approximation. Our results for the mass $$ m=(4080 \pm 150)~\text {MeV}$$ m=(4080±150)MeV and total width $$\Gamma =(147 \pm 19)~\mathrm { MeV}$$ Γ=(147±19)MeV of the resonance $$Z_{c}^{-}(4100)$$ Zc-(4100) are in excellent agreement with the existing LHCb data. |
url |
http://link.springer.com/article/10.1140/epjc/s10052-019-6737-0 |
work_keys_str_mv |
AT hsundu newchargedresonancezc4100zc4100thespectroscopicparametersandwidth AT ssagaev newchargedresonancezc4100zc4100thespectroscopicparametersandwidth AT kazizi newchargedresonancezc4100zc4100thespectroscopicparametersandwidth |
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