α

β

γ

σ = m⁻/m⁺

E (eV)

ω (σ)

W(σ) = E_b (eV)

E_thr (eV)

Lowest Channel

System

1.95

0.87

1.53

1.0

−14.0352

0.0320

−0.4352

−13.6

2Ps

e⁻e⁺e⁺e⁻

3.02

0.03

1.08

0.005

−1415.6694

0.00197

−2.8451

−1412.8243

Ps - Mu

e⁻e⁺µ⁻µ⁺

3.18

0.03

2.03

0.004

−1907.225

0.000979

−1.8659

−1905.36

Ps - A_2π

e⁻e⁺π⁻π⁺

1.95

0.87

1.53

0.000545

−12,493.217

0.000075

−0.9369

−12,492.28

Ps - Pn

e⁻e⁺p⁻p⁺

1.95

0.87

1.53

0.000408

−16,655.531

0.0000563

−0.94099

−16,654.59

Ps - P⁻d⁺

e⁻e⁺p⁻d

1.95

0.87

1.53

0.000363

−18,736.505

0.0000501

−0.93780

−18,735.567

Ps - P⁻t+

e⁻e⁺p⁻t

1.40

0.05

1.82

0.757

−3407.003

0.0310

−102.419

−3304.584

Mu - A_2π

µ⁻µ⁺π⁻π⁺