On the mass and the decay constant of recently observed bound state $h_b(1P)$

Details On the mass and the decay constant of recently observed bound state $h_b(1P)$ On the mass and the decay constant of recently observed bound state $h_b(1P)$

2011-09-23

arxiv.org/abs/1109.5212v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 5 figures

Scientific paper

The mass and decay constant of the ground state of spin singlet $b \bar{b}$
is calculated by using the QCD sum rules method. This meson is an axial vector
$P$-wave named $h_b(1P)$ meson with $J^P =1^+$. It is found that the mass of
this meson is $(m=9940\pm 37)$ MeV, which is consistent with the recent
experimental data by Belle collaboration.

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