$b\to s\gamma$ in Littlest Higgs Model

The inclusive process $b\to s\gamma$ is studied in the littlest Higgs model. The contributions arising from new particles are normally suppressed by a factor of $O(v^2\mathrm{/}{f}^2)$. Due to the large uncertainties of experimental measurements and theoretical predictions, the model parameters can escape from the constraints of present experiments provided $f\ge 1$ TeV.