Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at $\sqrt{s} = 7\ \mathrm{TeV}$ and first determination of the strong coupling constant in the TeV range

Measurement of the ratio of the inclusive 3-jet cross section to the inclusive 2-jet cross section in pp collisions at $\sqrt{s} = 7\ \mathrm{TeV}$ and first determination of the strong coupling constant in the TeV range