2023 Impact factor 4.2
Particles and Fields
Eur. Phys. J. C 26, 441-444 (2003)
DOI: 10.1140/epjc/s2002-01066-5

$\eta_b$ decay into two photons

N. Fabiano

Perugia University and INFN, via Pascoli, 06100 Perugia, Italy


(Received: 28 July 2002 / Revised version: 16 September 2002 / Published online: 20 November 2002 )

Abstract
We discuss the theoretical predictions for the two photon decay width of the pseudoscalar $\eta_b$ meson. Predictions from potential models are examined. It is found that various models are in good agreement with each other. Results for $\eta_b$ are also compared with those from $\Upsilon$ data through the NRQCD procedure.



© Società Italiana di Fisica, Springer-Verlag 2003