B_d

M_d

GeV (calculated)

Gauge boson

Interaction

B₅

M_eα

3.7 × 10⁻⁶

A = photon

Electromagnetic

B₆

M_e/α

7 × 10⁻²

p_1/2

Strong

B₇

M₆/α_w²

91.1876 (given)

weak (left)

B₈

M₇/α²

1.71 × 10⁶

X_R

CP (right) nonconservation

B₉

M₈/α²

3.22 × 10¹⁰

X_L

CP (left) nonconservation

B₁₀

M₉/α²

6.04 × 10¹⁴

weak (right)

B₁₁

M₁₀/α²

1.13 × 10¹⁹

G

Gravity