%0 Journal Article %T The second moment of Dirichlet twists of Hecke $L$-functions %A Peng Gao %A Rizwanur Khan %A Guillaume Ricotta %J Mathematics %D 2008 %I arXiv %R 10.4064/aa140-1-4 %X Fix a Hecke cusp form $f$, and consider the $L$-function of $f$ twisted by a primitive Dirichlet character. As we range over all primitive characters of a large modulus $q$, what is the average behavior of the square of the central value of this $L$-function? Stefanicki proved an asymptotic valid only for $q$ having very few prime factors, and we extend this to almost all $q$. %U http://arxiv.org/abs/0812.2606v2