Regex finding //something pattern but not /whatever with the [removed]\\\w+)

Question

I have a string like s = \'\'\'f current \\( \\boldsymbol{I}_{1}=\\mathbf{3} \\boldsymbol{A} \\sin \\omega \\boldsymbol{t} \\) and \\( \\boldsymbol{I}_{2}= \\) \\( 4 A