decay

width_calc [GeV]

width_obs [GeV]

rel. Δwidth

I_i

I_f

l = ΔI

G

x

m_X

G formula

$\eta \to {\pi }^0{\pi }^0{\pi }^0$

3.88428 × 10⁻⁷

4.226 × 10⁻⁷

0.00851869

1

3

4

0.0145

0.739114

0.26643

$G=0.0145$

$\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$ 0

3.09444 × 10⁻⁷

2.951 × 10⁻⁷

0.0176211

1

3

4

0.0145

0.755881

0.25729

$G=0.0145$

$\eta \to {\pi }^{+}{\pi }^{-}\gamma$

5.94407 × 10⁻⁸

6.097 × 10⁻⁸

0.021978

1

3

4

0.00213

0.50951

7.4388

$G=0.00213$