Results 131 to 140 of about 27,535 (267)
European Physical Journal C: Particles and Fields, 2020 We investigate the most interesting decay processes involving axions, photons and the lightest pseudoscalar mesons, making use of a chiral effective Lagrangian model with $$L=3$$ L=3 light quark flavors, which also includes the flavor-singlet ...
Giacomo Landini, Enrico Meggiolaro
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, 2013 We are computing the modifications for the scalar and pseudoscalar meson masses and mixing angles due to the proper accounting of fermionic vacuum fluctuation in the framework of the generalized 2+1 flavor quark meson model and the Polyakov loop ...
Tiwari, Vivek Kumar
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The $\eta - \eta'$ Mixing Angle Revisited
, 1997 The value of the $\eta - \eta'$ mixing angle $\theta_P$ is phenomenologically deduced from a rather exhaustive and up-to-date analysis of data including strong decays of tensor and higher-spin mesons, electromagnetic decays of vector and pseudoscalar ...
Bramon, A. +2 more
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Meson Screening Masses in Thermal QCD
EPJ Web of Conferences, 2012 The quark-gluon plasma (QGP) excitations, corresponding to the scalar and pseudoscalar meson quantum numbers, for different temperatures are calculated.
Czerski Piotr
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B0 and Bs0 decays into J/ψ f0(980) and J/ψ f0(500) and the nature of the scalar resonances
Physics Letters B, 2014 We describe the B0 and Bs0 decays into J/ψ f0(500) and J/ψ f0(980) by taking into account the dominant process for the weak decay of B0 and Bs0 into J/ψ and a qq¯ component.
W.H. Liang, E. Oset
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, 2005 Many meson processes are related to the U_A(1) axial anomaly, present in the Feynman graphs where fermion loops connect axial vertices with vector vertices.
DALIBOR KEKEZ +3 more
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Study of the production mechanism of the eta meson by means of analysing power measurements
, 2006 Information about the production mechanism of the eta meson in proton-proton collisions can be inferred by confronting the experimental studies on the analysing power for the p(pol)p --> pp eta reaction with the theoretical predictions of this observable.
A. Budzanowski +31 more
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Spectrum of quenched twisted mass lattice QCD at maximal twist
, 2005 Hadron masses are computed from quenched twisted mass lattice QCD for a degenerate doublet of up and down quarks with the twist angle set to pi/2, since this maximally twisted theory is expected to be free of linear discretization errors.
A. M. Abdel-Rehim +10 more
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European Physical Journal C: Particles and Fields, 2017 Based on the predictions of the relevant form factors from the covariant light-front quark model, we show the branching fractions for the $$D (D_s) \rightarrow (P,\,S,\,V,\,A)\,\ell \nu _\ell $$ D ( D s ) → ( P , S , V , A ) ℓ ν ℓ ( $$\ell =e$$ ℓ = e or $
Hai-Yang Cheng, Xian-Wei Kang
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Electroweak form factors of heavy-light mesons -- a relativistic point-form approach
, 2012 We present a general relativistic framework for the calculation of the electroweak structure of heavy-light mesons within constituent-quark models. To this aim the physical processes in which the structure is measured, i.e.
B. D. Keister +4 more
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