%0 Generic %1 hooper2021hints %A Hooper, Deanna C. %A Lucca, Matteo %D 2021 %K library %T Hints of dark matter-neutrino interactions in Lyman-$\alpha$ data %U http://arxiv.org/abs/2110.04024 %X In this letter we investigate the possibility that dark matter and (massive) neutrinos can interact via a simple, constant cross section. Building on previous numerical efforts, we constrain this model with CMB, BAO and, in particular, Lyman-$\alpha$ data. We find that the latter hint to a significant departure from $Łambda$CDM, with a preference for an interaction strength about 3$\sigma$ away from zero. We trace the origin of this preference back to the additional tilt that the interacting scenario can imprint on the Lyman-$\alpha$ flux, solving a well-known tension between early-time and Lyman-$\alpha$ probes. Future work including complementary Lyman-$\alpha$ data will be crucial in order to test these results.

@misc{hooper2021hints, abstract = {In this letter we investigate the possibility that dark matter and (massive) neutrinos can interact via a simple, constant cross section. Building on previous numerical efforts, we constrain this model with CMB, BAO and, in particular, Lyman-$\alpha$ data. We find that the latter hint to a significant departure from $\Lambda$CDM, with a preference for an interaction strength about 3$\sigma$ away from zero. We trace the origin of this preference back to the additional tilt that the interacting scenario can imprint on the Lyman-$\alpha$ flux, solving a well-known tension between early-time and Lyman-$\alpha$ probes. Future work including complementary Lyman-$\alpha$ data will be crucial in order to test these results.}, added-at = {2021-10-11T07:02:10.000+0200}, author = {Hooper, Deanna C. and Lucca, Matteo}, biburl = {https://www.bibsonomy.org/bibtex/24f8a6dc07c0eab341d1162ec4ba0687a/gpkulkarni}, description = {Hints of dark matter-neutrino interactions in Lyman-$\alpha$ data}, interhash = {5a4dfa91c3393c6fda60abe1e099dbdf}, intrahash = {4f8a6dc07c0eab341d1162ec4ba0687a}, keywords = {library}, note = {cite arxiv:2110.04024Comment: 4+2 pages with 2 figures. Comments are very welcome}, timestamp = {2021-10-11T07:02:10.000+0200}, title = {Hints of dark matter-neutrino interactions in Lyman-$\alpha$ data}, url = {http://arxiv.org/abs/2110.04024}, year = 2021 }