decay

width_calc [GeV]

width_obs [GeV]

rel. Δwidth

I_i

I_f

l = ΔI

G

x

m_X

G formula

$K^{+}\to {\pi }^0{e}^{+}{\nu }_e$

2.52543 × 10⁻¹⁸

2.565 × 10⁻¹⁸

0.0105263

1

3

2

8.67078 × 10⁻⁹

0.274445

2168.89

$G=g_1\sqrt{\alpha }/\sqrt{2}$

$K^{+}\to {\pi }^0{\mu }^{+}{\nu }_{\mu }$

1.7138 × 10⁻¹⁸

1.764 × 10⁻¹⁸

0.0272109

1

3

2

8.67078 × 10⁻⁹

0.488124

1899.19

$G=g_1\sqrt{\alpha }/\sqrt{2}$

$K_L^0\to {\pi }^{+}{e}^{-}{\overline{\nu }}_e$

5.04792 × 10⁻¹⁸

5.217 × 10⁻¹⁸

0.0120759

1

3

2

1.22623 × 10⁻⁸

0.281508

1830.36

$G=g_1\sqrt{\alpha }$

$K_L^0\to {\pi }^{+}{\mu }^{-}{\overline{\nu }}_{\mu }$

3.40719 × 10⁻¹⁸

3.478 × 10⁻¹⁸

0.00920069

1

3

2

1.22623 × 10⁻⁸

0.493499

1602.52

$G=g_1\sqrt{\alpha }$

$K^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}$

2.97836 × 10⁻¹⁸

2.971 × 10⁻¹⁸

0.00538539

1

3

2

3.10237 × 10⁻⁸

0.84814

127.367

$G=2.53g_1\sqrt{\alpha }$

$K^{+}\to {\pi }^{+}{\pi }^0{\pi }^0$

9.19439 × 10⁻¹⁹

9.34 × 10⁻¹⁹

0.0289079

1

3

2

1.55119 × 10⁻⁸

0.829533

191.076

$G=2.53g_1\sqrt{\alpha }/2$

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

2.71785 × 10⁻¹⁸

2.518 × 10⁻¹⁸

0.0353455

1

3

2

2.45247 × 10⁻⁸

0.813752

159.959

$G=2g_1\sqrt{\alpha }$

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

1.50061 × 10⁻¹⁸

1.617 × 10⁻¹⁸

0.0185529

1

3

2

2.00243 × 10⁻⁸

0.832212

167.813

$G=2g_1\sqrt{\alpha }/\sqrt{3/2}$

$K^{+}\to {\pi }^{+}{\pi }^{-}{e}^{+}{\nu }_e$

2.01491 × 10⁻²¹

2.174 × 10⁻²¹

0.0367985

1

3

2

3.33475 × 10⁻¹⁰

0.566462

8453.24

$G=g_1\alpha /\pi$

$K^{+}\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\nu }_{\mu }$

6.69205 × 10⁻²²

7.44 × 10⁻²²

0.642473

1

3

2

3.33475 × 10⁻¹⁰

0.780141

6435.05

$G=g_1\alpha /\pi$

$K^{+}\to {\pi }^0{\pi }^0{e}^{+}{\nu }_e$

1.06991 × 10⁻²¹

1.169 × 10⁻²¹

0.182207

1

3

2

2.35802 × 10⁻¹⁰

0.547855

10293.3

$G=g_1\alpha /\left(\pi \sqrt{2}\right)$

$K^{+}\to {\pi }^0{\pi }^0{\mu }^{+}{\nu }_{\mu }$

3.8545 × 10⁻²²

4.2 × 10⁻²²

0.5

1

3

2

2.35802 × 10⁻¹⁰

0.761534

7981.24

$G=g_1\alpha /\left(\pi \sqrt{2}\right)$

$K_L^0\to {\pi }^0{\pi }^{+}{e}^{-}{\nu }_e$

2.12372 × 10⁻²¹

2.764 × 10⁻²¹

0.0209841

1

3

2

3.33475 × 10⁻¹⁰

0.552758

8671.14

$G=g_1\alpha /\pi$

$K_L^0\to {\pi }^0{\pi }^{+}{\mu }^{-}{\nu }_{\mu }$

7.58984 × 10⁻²²

8. × 10⁻²²

0.0725

1

3

2

3.33475 × 10⁻¹⁰

0.76475

6715.43

$G=g_1\alpha /\pi$

$K^{+}\to {\pi }^0{\pi }^{+}\gamma$

1.37146 × 10⁻²⁰

1.462 × 10⁻²⁰

0.0581395

1

1

2

8.55396 × 10⁻¹⁰

0.556123

5707.21

$G=g_1\alpha /\sqrt{3/2}$

$K^{\pm }\to {\pi }^{\pm }{\pi }^{+}{\pi }^{-}\gamma$

6.05074 × 10⁻²¹

5.53 × 10⁻²¹

0.385172

1

0

1

7.40795 × 10⁻¹⁰

0.84814

3574.06

$G=g_1\alpha \sqrt{2}$