TY - JOUR
T1 - On the gluon content of the η and η′ mesons
AU - Escribano, Rafel
AU - Nadal, Jordi
PY - 2007/5/1
Y1 - 2007/5/1
N2 - A phenomenological analysis of radiative V Pγ and PVγ decays is performed with the purpose of determining the gluonic content of the η and η′ wave functions. Our results show that within our model there is no evidence for a gluonium contribution in the η, Zη2 ≤ 0.00 0.12, or the η′, Zη′2 ≤ 0.04 0.09. In terms of a mixing angle description this corresponds to φP ≤ (41.4 1.3)° and |φη′G| ≤ (12 13)°. In addition, the η-η′ mixing angle is found to be φP ≤ (41.5 1.2)° if we don't allow for a gluonium component. © SISSA 2007.
AB - A phenomenological analysis of radiative V Pγ and PVγ decays is performed with the purpose of determining the gluonic content of the η and η′ wave functions. Our results show that within our model there is no evidence for a gluonium contribution in the η, Zη2 ≤ 0.00 0.12, or the η′, Zη′2 ≤ 0.04 0.09. In terms of a mixing angle description this corresponds to φP ≤ (41.4 1.3)° and |φη′G| ≤ (12 13)°. In addition, the η-η′ mixing angle is found to be φP ≤ (41.5 1.2)° if we don't allow for a gluonium component. © SISSA 2007.
KW - Electromagnetic processes and properties
KW - Phenomenological models
UR - https://www.scopus.com/pages/publications/34547562751
U2 - 10.1088/1126-6708/2007/05/006
DO - 10.1088/1126-6708/2007/05/006
M3 - Article
SN - 1126-6708
VL - 2007
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 5
M1 - 006
ER -