n_i

m_i calc. (MeV∙c⁻²)

m_i exp. (MeV∙c⁻²)

δ (%)

particle

24

105.0

105.65

−0.57

Muon (lepton), µ⁻

31

32

135.6

140.0

134.97

139.57

0.46

0.30

Pion (meson), π⁰

Pion (meson), π⁺, π⁻

113

114

494.5

498.9

493.68

497.70

0.17

0.24

Kaon (meson), K⁺, K⁻

Kaon (meson), ${\text{K}}_{\text{s}}^0$ , ${\text{K}}_{\text{L}}^0$

125

547.1

547.75

−0.11

Eta (meson), η⁰

177

774.7

775.8

−0.14

Rho (meson), ρ⁰, ρ⁺, ρ⁻

179

783.4

782.59

0.10

Omega (meson), ω

214

215

936.6

940.9

938.27

939.56

−0.17

0.15

Proton (baryon), p⁺

Neutron (baryon), n⁰

255

1116.0

1115.68

0.03

Lambda (baryon), Λ⁰

271

272

273

1186.0

1190.4

1198.9

1189.37

1192.6

1197.45

−0.28

−0.18

0.12

Sigma (baryon), Σ⁺

Sigma (baryon), Σ⁰

Sigma (baryon), Σ⁻

300

302

1313.0

1321.7

1314.8

1321.7

−0.13

0.00

Xi (baryon), Σ⁰

Xi (baryon), Σ⁻

350

351

1531.8

1536.2

1531.8

1535.0

0.00

0.07

Xi (baryon), Σ⁰ res.

Xi (baryon), Σ⁻ res.

382

1671.9

1672.45

−0.03

Omega (baryon), Ω⁻

406

1776.9

1777.0

−0.00

Tau (lepton), τ⁻

426

450

1864.5

1969.5

1864.8

1968.4

−0.01

0.05

D Meson, D⁰

Ds Meson, D_s⁺

458

459

2004.5

2008.9

2006.97

2010.27

−0.12

−0.06

D Meson, D⁺⁰

D Meson, D⁺⁺

522

2284.6

2286.46

−0.08

Lambda c (baryon), ${\Lambda }_{\text{c}}^{+}$

560

561

2451.0

2455.3

2452.9, 2453.7

2453.9

−0.08

0.05

Sigma c (baryon), ${\Sigma }_{\text{c}}^{+}$ , ${\Sigma }_{\text{c}}^0$

Sigma c (baryon), Σc⁺⁺

564

565

2468.4

2472.8

2467.9

2471.0

0.02

0.07

Xi c (baryon), ${\Xi }_{\text{c}}^{+}$ , ${\Xi }_{\text{c}}^0$

Xi c (baryon), ${\Xi }_{\text{c}}^{+}$ , ${\Xi }_{\text{c}}^0$

588

589

2573.5

2577.9

2575.7

2578.0

0.08

−0.00

Xi c (baryon), ${\Xi }_{\text{c}}^{+}$ res.

Xi c (baryon), ${\Xi }_{\text{c}}^0$ res.

616

2696.0

2697.5

−0.06

Omega c (baryon), ${\Omega }_{\text{c}}^0$

804

3518.9

3518.9

0.00

Xi cc (baryon), ${\Xi }_{\text{cc}}^{+}$

827

3619.5

3621.4

−0.05

Xi cc (baryon), ${\Xi }_{\text{cc}}^{++}$

1206

1226

5278.3

5365.8

5279.34, 5279.65

5366.8

−0.02

−0.02

B Meson, B⁺, B⁰

Bs Meson, Bs0

1284

5619.7

5620.2

−0.00

Lambda 0s (baryon), ${\Lambda }_{\text{b}}^0$

1327

1329

5807.9

5816.6

5810.5

5815.2

−0.04

0.02

Sigma b (baryon), ${\Sigma }_{\text{b}}^{+}$

Sigma b (baryon), ${\Sigma }_{\text{b}}^{-}$

1356

5934.8

5935.0

−0.00

Xi’ b (baryon), ${{\Xi }^{\prime }}_{\text{b}}$

1361

5956.6

5955.3

0.02

Xi* b (baryon), ${\Xi }_{\text{b}}^{\ast }$

1381

6044.2

6046.0

−0.02

Omega b (baryon), ${\Omega }_{\text{b}}^{-}$

1423

6228.0

6226.9

0.01

Xi b (baryon), Σ_b

1434

6276.1

6274.9

0.02

Bs Meson, ${\text{B}}_{\text{c}}^{+}$

18,367

80386.8

80,385

+0.00

W⁻ Boson

20,835

91188.5

91187.5

+0.00

Z Boson

28,640

125348.7

125,350

−0.00

Higgs Boson