scholarly journals Towards the Electromagnetic Transition Form Factor of the \(\eta \) Meson with WASA-at-COSY

Author(s):  
Ankita Goswami
1981 ◽  
Vol 102 (4) ◽  
pp. 296-298 ◽  
Author(s):  
R.I. Dzhelyadin ◽  
S.V. Golovkin ◽  
A.S. Konstantinov ◽  
V.F. Konstantinov ◽  
V.P. Kubarovski ◽  
...  

2003 ◽  
Vol 18 (07) ◽  
pp. 1023-1050 ◽  
Author(s):  
YEGANA V. MAMEDOVA

The light pseudoscalar π0, η and η′ mesons electromagnetic transition γ* + γ* → M form factors FMγ*(Q2,ω) are calculated, applying the perturbative QCD factorization formula and the frozen coupling constant approximation. In the computations the O(αS) order expression for FMγ*(Q2,ω) and the mesons' infrared renormalon corrected distribution amplitudes are used. In the case of the η and η′ mesons, the SUf(3) ordinary octet-singlet mixing scheme is utilized. Comparisons are made with the results obtained, employing the mesons' ordinary distribution amplitudes and with γ + γ* → M transition form factors.


2017 ◽  
Vol 768 ◽  
pp. 38-45 ◽  
Author(s):  
C. Lazzeroni ◽  
N. Lurkin ◽  
A. Romano ◽  
T. Blazek ◽  
M. Koval ◽  
...  

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