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Article

The first moment of cusp form L-functions in weight aspect on average

Acta Arithmetica. 2017. Vol. 181. No. 3. P. 197-208.
Frolenkov D., Balkanova O.

We prove an asymptotic formula for the twisted first moment of central $L$-values in weight aspect on average. Our estimate of the error term allows extending the logarithmic length of mollifier $\Delta$ up to $2$. The best previously known result, due to Iwaniec and Sarnak, was $\Delta<1$. The proof is based on a representation formula for the error in terms of Legendre polynomials.