scholarly journals Bottom baryon decays to pseudoscalar meson and pentaquark

2015 ◽  
Vol 92 (9) ◽  
Author(s):  
Hai-Yang Cheng ◽  
Chun-Khiang Chua
Keyword(s):  
Pseudoscalar Meson ◽  
Bottom Baryon

scholarly journals Two and three pseudoscalar production in e+e− annihilation and their contributions to (g − 2)μ

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Wen Qin ◽  
Ling-Yun Dai ◽  
Jorge Portolés
Keyword(s):  
Experimental Data ◽  
Theoretical Prediction ◽  
Pseudoscalar Meson ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Vacuum Polarization ◽  
Meson Production ◽  
The Other ◽  
Joint Analysis ◽  
The Standard Model

Abstract A coherent study of e+e− annihilation into two (π+π−, K+K−) and three (π+π−π0, π+π−η) pseudoscalar meson production is carried out within the framework of resonance chiral theory in energy region E ≲ 2 GeV. The work of [L.Y. Dai, J. Portolés, and O. Shekhovtsova, Phys. Rev. D88 (2013) 056001] is revisited with the latest experimental data and a joint analysis of two pseudoscalar meson production. Hence, we evaluate the lowest order hadronic vacuum polarization contributions of those two and three pseudoscalar processes to the anomalous magnetic moment of the muon. We also estimate some higher-order additions led by the same hadronic vacuum polarization. Combined with the other contributions from the standard model, the theoretical prediction differs still by (21.6 ± 7.4) × 10−10 (2.9σ) from the experimental value.

Pseudoscalar meson production and the quark model

1969 ◽  
Vol 13 (1) ◽  
pp. 53-56 ◽  
Author(s):  
T. Hofmokl ◽  
M. Szeptycka
Keyword(s):  
Quark Model ◽  
Pseudoscalar Meson ◽  
Meson Production

scholarly journals Phase Diagram, Scalar-Pseudoscalar Meson Behavior and Restoration of Symmetries in (2 + 1) Polyakov-Nambu-Jona-Lasinio Model

Symmetry ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 507 ◽  
Author(s):  
Pedro Costa ◽  
Renan Pereira
Keyword(s):  
Phase Diagram ◽  
Chiral Symmetry ◽  
Pseudoscalar Meson ◽  
Dense Medium ◽  
Experimental Search ◽  
End Point

We explore the phase diagram and the modification of mesonic observables in a hot and dense medium using the (2 + 1) Polyakov-Nambu-Jona-Lasinio model. We present the phase diagram in the ( T , μ B ) -plane, with its isentropic trajectories, paying special attention to the chiral critical end point (CEP). Chiral and deconfinement transitions are examined. The modifications of mesonic observables in the medium are explored as a tool to analyze the effective restoration of chiral symmetry for different regions of the phase diagram. It is shown that the meson masses, namely that of the kaons, change abruptly near the CEP, which can be relevant for its experimental search.

scholarly journals Meson Spectrum from the Bethe-Salpeter Equation

1997 ◽  
Vol 50 (1) ◽  
pp. 95 ◽  
Author(s):  
C. J. Burden ◽  
L. Qian ◽  
C. D. Roberts ◽  
P. C. Tandy ◽  
M. J. Thomson
Keyword(s):  
Mass Spectrum ◽  
Pseudoscalar Meson ◽  
Phenomenological Model ◽  
Light Quark ◽  
Meson Spectrum ◽  
Decay Constants ◽  
Model Based ◽  
Meson Octet

We present details of a model for calculating the mass spectrum of light-quark mesons and decay constants of the pseudoscalar meson octet from a phenomenological model based on Dyson–Schwinger and Bethe–Salpeter equations. In this model the Bethe-Salpeter kernel is approximated by a separable ansatz obtained from input quark propagators.

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