diff --git a/standard_model.md b/standard_model.md
index 607b7b655a4..1c38056db97 100644
--- a/standard_model.md
+++ b/standard_model.md
@@ -1,21 +1,22 @@
 The Standard Model of Particle Physics
 
-| Particle Name | Symbol | Spin | Charge | Mass [GeV/c<sup>2</sup>] |
-| ------------- | ------ | ---- | ------ | ------------------------ |
-| electron      | e      | 1/2  | -1     | 0.000511                 |
-| muon          | μ      | 1/2  | -1     | 0.1057                   |
-| tau           | τ      | 1/2  | -1     | 1.777                    |
-| electron neutrino | ν<sub>e</sub> | 1/2 | 0 | 0                   |
-| muon neutrino     | ν<sub>μ</sub> | 1/2 | 0 | 0                   |
-| tau neutrino      | ν<sub>τ</sub> | 1/2 | 0 | 0                   |
-| up quark      | u      | 1/2  | 2/3     | 0.0023                  |
-| down quark    | d      | 1/2  | -1/3    | 0.0048                  |
-| charm quark   | c      | 1/2  | 2/3     | 1.275                   |
-| strange quark | s      | 1/2  | -1/3    | 0.095                   |
-| top quark     | t      | 1/2  | 2/3     | 175                     |
-| bottom quark  | b      | 1/2  | -1/3    | 4.18                    |
-| photon        | γ      | 1    | 0       | 0                       |
-| Z boson       | Z      | 1    | 0       | 91.2                    |
-| W boson       | W      | 1    | ±1      | 80.4                    |
-| gluon         | g      | 1    | 0       | 0                       |
-| Higgs boson   | H      | 0    | 0       | 125                     |
\ No newline at end of file
+| Particle Name     | Symbol        | Spin | Charge | Mass [GeV/c<sup>2</sup>] |
+| -------------     | ------        | ---- | ------ | ------------------------ |
+| electron          | e             | 1/2  | -1     | 0.000511                 |
+| muon              | μ             | 1/2  | -1     | 0.1057                   |
+| tau               | τ             | 1/2  | -1     | 1.777                    |
+| electron neutrino | ν<sub>e</sub> | 1/2  | 0      | 0                        |
+| muon neutrino     | ν<sub>μ</sub> | 1/2  | 0      | 0                        |
+| tau neutrino      | ν<sub>τ</sub> | 1/2  | 0      | 0                        |
+| up quark          | u             | 1/2  | 2/3    | 0.0023                   |
+| down quark        | d             | 1/2  | -1/3   | 0.0048                   |
+| charm quark       | c             | 1/2  | 2/3    | 1.275                    |
+| strange quark     | s             | 1/2  | -1/3   | 0.095                    |
+| top quark         | t             | 1/2  | 2/3    | 175                      |
+| bottom quark      | b             | 1/2  | -1/3   | 4.18                     |
+| photon            | γ             | 1    | 0      | 0                        |
+| Z boson           | Z             | 1    | 0      | 91.2                     |
+| W boson           | W             | 1    | ±1     | 80.4                     |
+| gluon             | g             | 1    | 0      | 0                        |
+| Higgs boson       | H             | 0    | 0      | 125                      |
+| Giton             | G             | 2    | 0      | 750                      |