Results 91 to 100 of about 28,157 (248)

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

Branching ratios of Bc Meson Decaying to Pseudoscalar and Axial-Vector Mesons

open access: yes, 2009
We study Cabibbo-Kobayashi-Maskawa (CKM) favored weak decays of Bc mesons in the Isgur-Scora-Grinstein-Wise (ISGW) quark model. We present a detailed analysis of the Bc meson decaying to a pseudoscalar meson (P) and an axial-vector meson (A).
Ball P   +14 more
core   +1 more source

Parton Distribution Functions with Twisted Mass Fermions [PDF]

open access: yes, 2005
We present a first Wilson twisted mass fermion calculation of the matrix element between pion states of the twist-2 operator, which is related to the the lowest moment of the valence quark parton distribution function in a pion.
A. Shindler   +51 more
core   +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

Low-lying even parity meson resonances and spin-flavor symmetry [PDF]

open access: yes, 2010
A study is presented of the $s-$wave meson-meson interactions involving members of the $\rho-$nonet and of the $\pi-$octet. The starting point is an SU(6) spin-flavor extension of the SU(3) flavor Weinberg-Tomozawa Lagrangian.
A. V. Manohar   +6 more
core   +2 more sources

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

B-meson decay constants: a more complete picture from full lattice QCD [PDF]

open access: yes, 2015
We extend the picture of $B$-meson decay constants obtained in lattice QCD beyond those of the $B$, $B_s$ and $B_c$ to give the first full lattice QCD results for the $B^*$, $B^*_s$ and $B^*_c$.
A. T. Lytle   +7 more
core   +2 more sources

Decays of bottom mesons emitting tensor meson in final state using ISGW II model

open access: yes, 2010
In this paper, we investigate phenomenologically two-body weak decays of the bottom mesons emitting pseudoscalar/vector meson and a tensor meson. Form factors are obtained using the improved ISGW II model.
M. Neubert   +4 more
core   +1 more source

Pseudoscalar and vector meson form factors from lattice QCD [PDF]

open access: yes, 2007
We present a study of the pseudoscalar and vector meson form factors, calculated using the Fat-Link Irrelevant Clover (FLIC) action in the framework of Quenched Lattice QCD.
A. G. Williams   +9 more
core   +2 more sources

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

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