Results 21 to 30 of about 1,774 (184)
European Physical Journal C: Particles and Fields, 2018 We investigate the decays of $$\bar{B}^0_s$$ B¯s0 , $$\bar{B}^0$$ B¯0 and $$B^-$$ B- into $$\eta _c$$ ηc plus a scalar or vector meson in a theoretical framework by taking into account the dominant process for the weak decay of $$\bar{B}$$ B¯ meson into $
Ju-Jun Xie, Gang Li
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Radiative decays of vector and pseudoscalar nonets
EPJ Web of Conferences, 2012 Using a counting scheme which treats the light pseudoscalar and the light vector-meson nonet on equal footing, the decays of the narrow light vector mesons into a pseudoscalar meson and a dilepton and of the η′ meson into an ɷ meson and a dielectron are ...
Lutz M.F.M., Leupold S., Terschlüsen C.
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Heavy + light pseudoscalar meson semileptonic transitions
European Physical Journal C: Particles and Fields, 2021 A symmetry-preserving regularisation of a vector $$\times $$ × vector contact interaction (SCI) is used to deliver a unified treatment of semileptonic transitions involving $$\pi $$ π , K, $$D_{(s)}$$ D ( s ) , $$B_{(s,c)}$$ B ( s , c ) initial states ...
Zhen-Ni Xu +3 more
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The Ds0(2590)+ as the dressed cs¯(21S0) meson in a coupled-channels calculation
Physics Letters B, 2022 The recent discovery of the Ds0(2590)+ meson by the LHCb Collaboration has stimulated the analysis of meson-meson channels effects in the two-body quark-antiquark meson spectrum.
Pablo G. Ortega +3 more
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European Physical Journal C: Particles and Fields, 2023 We calculate the complete T matrices of the elastic light pseudoscalar meson and heavy meson scattering to the third order in heavy meson chiral perturbation theory. We determine the low-energy constants by fitting the phase shifts and scattering lengths
Bo-Lin Huang +3 more
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The role of meson exchanges in light-by-light scattering
Physics Letters B, 2017 We discuss the role of meson exchange mechanisms in γγ→γγ scattering. Several pseudoscalar (π0, η, η′(958), ηc(1S), ηc(2S)), scalar (f0(500), f0(980), a0(980), f0(1370), χc0(1P)) and tensor (f2(1270), a2(1320), f2′(1525), f2(1565), a2(1700)) mesons are ...
Piotr Lebiedowicz, Antoni Szczurek
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Decay of the pseudoscalar glueball into vector, axial-vector, scalar and pseudoscalar mesons
European Physical Journal C: Particles and Fields, 2023 We resume the investigation of the ground-state pseudoscalar glueball, $$J^{PC}=0^{-+}$$ J PC = 0 - + , by computing its two- and three-body decays into vector and axial-vector quark-antiquark meson fields additional to scalar and pseudoscalar mesons ...
Walaa I. Eshraim
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Deconfinement and Freezeout Boundaries in Equilibrium Thermal Models
Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 In different approaches, the temperature‐baryon density plane of QCD matter is studied for deconfinement and chemical freezeout boundaries. Results from various heavy‐ion experiments are compared with the recent lattice simulations, the effective QCD‐like Polyakov linear‐sigma model, and the equilibrium thermal models.
Abdel Nasser Tawfik +4 more
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Spectra and decay rates of bb̄ meson using Gaussian wave function
EPJ Web of Conferences, 2015 Using the Gaussian wave function mass spectra and decay rates of bb̄ meson are investigated in the framework of phenomenological quark anti-quark potential (coulomb plus power) model consisting of relativistic corrections to the kinetic energy term.
Rai Ajay Kumar +2 more
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Study of b⟶c Induced B¯∗⟶Vℓν¯ℓ Decays
Advances in High Energy Physics, Volume 2020, Issue 1, 2020., 2020 In this paper, we investigate the tree‐dominated B¯u,d,s,c∗⟶Vℓ−ν¯ℓ (V=Du,d∗,Ds∗,J/ψ and ℓ = e, μ, τ) decays in the Standard Model with the relevant form factors obtained in the light‐front quark model. These decays involve much more helicity states relative to the corresponding B¯∗⟶Pℓ−ν¯ℓ and B¯⟶Vℓ−ν¯ℓ decays, and moreover, the contribution of ...
Qin Chang +4 more
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