In solving a particular kind of integral I ended up with the following series(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\sum_{k=0}^\infty \frac{\Gamma[b+k]}{\Gamma[a+b+k]} \frac{(1-t^2)^k}{k!} \left(\frac{\omega}{2}\right)^k J_{a+b-\frac{1}{2} +k} (\omega)[/tex]

where 0<t<1, and a,b are small and positive.

I tried looking it up in a couple of books (Watson -- theory of Bessel functions, Prudnikov et al. -- Series and Integrals Vol 1-4, Gradshteyn -- Tables of Integrals) but this particular sum didn't appear in any of those (although some series came remarkably close). I tried substituting the bessel functions by a linear combination of Bessel functions times Lommel polynomials (see here) but this makes things even more complicated.

My question is, does anyone have either a good reference for a series like this, or knows some sort of method to solve it? Any hint is appreciated!

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# Series of a Bessel function

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