Results 51 to 60 of about 1,774 (184)

Semileptonic decay of Ds+→π0ℓ+νℓ via neutral meson mixing

open access: yesPhysics Letters B, 2020
Based on the mechanism of neutral meson mixing, we predict the branching fraction of the semileptonic decay of Ds+→π0ℓ+νℓ (ℓ=e, μ) using recently measured branching fraction of Ds+→ηe+νe by BESIII experiment.
Hai-Bo Li, Mao-Zhi Yang
doaj   +1 more source

Exact formula of the spectrum of the pseudoscalar octet

open access: yesPhysics Letters B, 2015
Non-perturbative proof is presented of a generalized version of Goldstone theorem, where the Lagrangian conserves an approximate SU(3) chiral symmetry, that both quark masses and electromagnetism make contributions to the masses of spinless particles of ...
R. Ling, B.L. Li, J.L. Ping
doaj   +1 more source

The light invisible boson in FCNC decays of B and $$B_c$$ B c mesons

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this paper, we study the FCNC decay processes of B and $$B_c$$ B c meson, in which one invisible particle is emitted. Both the spin-0 and spin-1 cases are considered.
Geng Li   +3 more
doaj   +1 more source

Measurement of branching fractions for D meson decaying into ϕ meson and a pseudoscalar meson

open access: yesPhysics Letters B, 2019
The four decay modes D0→ϕπ0, D0→ϕη, D+→ϕπ+, and D+→ϕK+ are studied by using a data sample taken at the centre-of-mass energy s=3.773 GeV with the BESIII detector, corresponding to an integrated luminosity of 2.93 fb−1.
M. Ablikim   +487 more
doaj   +1 more source

Meson–baryon coupling constants of the SU(3) baryons with flavor SU(3) symmetry breaking

open access: yesPhysics Letters B, 2018
We investigate the strong coupling constants for the baryon octet–octet, decuplet–octet, and decuplet–decuplet vertices with pseudoscalar mesons within a general framework of the chiral quark-soliton model, taking into account the effects of flavor SU(3)
Ghil-Seok Yang, Hyun-Chul Kim
doaj   +1 more source

Strong decays of vector mesons to pseudoscalar mesons in the relativistic quark model

open access: yesPhysics Letters B, 2015
Strong decays of vector (S13) mesons to the pair of pseudoscalar (S01) mesons are considered in the framework of the microscopic decay mechanism and the relativistic quark model based on the quasipotential approach.
D. Ebert, R.N. Faustov, V.O. Galkin
doaj   +1 more source

Direct CP Violation from Isospin Symmetry Breaking Effects for the Decay Process B-s→P(V)π0 in PQCD

open access: yesAdvances in High Energy Physics, 2019
We investigate the direct CP violation for the decay process of B-s→P(V)π0 (P,V refer to the pseudoscalar meson and vector meson, resp.) via isospin symmetry breaking effects from the π0-η-η′ mixing mechanism in PQCD factorization approach.
Gang Lü, Qin-Qin Zhi
doaj   +1 more source

Study of the interactions of the axion with mesons and photons using a chiral effective Lagrangian model

open access: yesEuropean 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
doaj   +1 more source

Weak decays of $$B_c$$ Bc into two hadrons under flavor SU(3) symmetry

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
A large number of $$B_c$$ Bc meson events have been recorded at the LHCb detector, especially some two-body hadronic decay modes. We analyzed the weak decays of the $$B_c$$ Bc meson into two hadron states under the flavor SU(3) symmetry.
Ruilin Zhu   +3 more
doaj   +1 more source

Meson Screening Masses in Thermal QCD

open access: yesEPJ 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
doaj   +1 more source

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