Results 11 to 20 of about 155,190 (223)

a0(980)−f0(980) mixing in χc1→π0f0(980)→π0π+π− and χc1→π0a0(980)→π0π0η

open access: yesPhysics Letters B, 2017
We study the isospin breaking in the reactions χc1→π0π+π− and χc1→π0π0η and its relation to the a0(980)−f0(980) mixing, which was measured by the BESIII Collaboration.
M. Bayar, V.R. Debastiani
doaj   +2 more sources

New information on the strong isospin symmetry breaking in the reactions of the a00(980) and f0(980) resonance production [PDF]

open access: yesEPJ Web of Conferences, 2019
We discuss the isotopic symmetry breaking as a tool of studying the production mechanisms and nature of light scalar mesons. The anomalous isospin breaking effects can appear not only due to the a00(980)−f0(980)$ a_0^0(980) - {f_0}(980) $ mixing, but ...
Achasov N.N., Shestakov G.N.
doaj   +3 more sources

Observation of a00 (980)-f0 (980) Mixing [PDF]

open access: yes, 2018
We report the first observation of a00(980)-f0(980) mixing in the decays of J/ψ→φf0(980)→φa00(980)→φηπ0 and χc1→a00(980)π0→f0(980)π0→π+π-π0, using data samples of 1.31×109 J/ψ events and 4.48×108 ψ(3686) events accumulated with the BESIII detector.
Gao Y.G.   +100 more
core   +10 more sources

Possible signatures for tetraquarks from the decays of $$a_0(980)$$ a 0 ( 980 ) , $$a_0(1450)$$ a 0 ( 1450 )

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
Based on the recent proposal for the tetraquarks with the mixing scheme, we investigate fall-apart decays of $$a_0(980), a_0(1450)$$ a 0 ( 980 ) , a 0 ( 1450 ) into two lowest-lying mesons.
K. S. Kim, Hungchong Kim
doaj   +2 more sources

Study of a00(980)-f0(980) mixing [PDF]

open access: yes, 2011
Using samples of 2.25×108 J/ψ events and 1.06×108 ψ ′ events collected with the BES III detector, we study the f 0(980)→a00(980) and a00(980)→f 0(980) transitions in the processes J/ψ→φf 0(980) →φa00(980) and χ c1→π0a00(980)→π0f 0(980), respectively ...
Liu, YW   +315 more
core   +2 more sources

Search for the decay D+s → a0(980)0e+νe [PDF]

open access: yes, 2021
Using 6.32  fb−1 of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we present the first search for the decay D+s → a0(980)0e+νe, a0(980)0 → π0η, which could proceed via a0(980)−f0 ...
Johansson, Tord   +19 more
core   +4 more sources

Observation of the rare decay B+ -> K+π0π0 and measurement of the quasi-two-body contributions B+ -> K*(892)+π0, B+ -> f0(980)K+, and B+ -> χc0K+ [PDF]

open access: yes, 2011
We report an analysis of charmless hadronic decays of charged B mesons to the final state K(+) pi(0)pi(0), using a data sample of (470.9 +/- 2.8) x 10(6) B (B) over bar events collected with the BABAR detector at the Y(4S) resonance. We observe an excess
Harrison, P. F.   +4 more
core   +1 more source

Searches for B meson decays to phiphi, phirho, phif_{0}(980), and f_{0}(980)f_{0}(980) final states. [PDF]

open access: yes, 2008
We present the results of searches for B decays to charmless final states involving varphi, f_{0}(980), and charged or neutral rho mesons. The data sample corresponds to 384x10;{6} BB[over ] pairs collected with the BABAR detector operating at the PEP-II
Kroseberg, J   +99 more
core   +2 more sources

Study the CP violation of the quasi-two-body decays of B meson with the a00(980) and f0(980) mixing

open access: yesNuclear Physics B, 2023
In the framework of the QCD factorization approach, we study the localized CP violations of the B−→K−π+π−, B−→π−π+π−, B−→K−K+K−, B−→π−K+K−, B−→K−π0η and B−→π−π0η decays with and without the a00(980)−f0(980) mixing mechanism, respectively, and find that ...
Jing-Juan Qi   +2 more
doaj   +1 more source

Triangle singularity in the $$J/\psi \rightarrow K^+ K^- f_0(980)(a_0(980))$$ J/ψ→K+K-f0(980)(a0(980)) decays

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We study the $$J/\psi \rightarrow K^+ K^- f_0(980)(a_0(980))$$ J/ψ→K+K-f0(980)(a0(980)) reaction and find that the mechanism to produce this decay develops a triangle singularity around $$M_{\mathrm{inv}}(K^- f_0/K^- a_0) \approx 1515$$ Minv(K-f0/K-a0 ...
Wei-Hong Liang   +3 more
doaj   +1 more source

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