Speaker
Description
The diffuse Galactic $\gamma$-ray emission is produced from the interaction of cosmic rays and interstellar medium or radiation fields in the Galaxy, where neutrino production is also expected. Recently, the Large High Altitude Air Shower Observatory (LHAASO) reported the measurements of the diffuse $\gamma$-ray from the Galactic plane with energies above 10 TeV. In this study, we construct the neutrino emission template based on LHAASO’s observation and search for diffuse neutrinos accompanying the LHAASO diffuse Galactic $\gamma$-ray emission using ten-year IceCube track events. In the absence of significant signals, we set upper limits at the 90\% confidence level for each flux template, resulting a neutrino flux of $\rm d\phi_\nu/\rm dE_\nu=1.42\times10^{-14}(E_{\nu}/25\mathrm{TeV})^{-2.99}\mathrm{TeV}^{-1}\mathrm{cm}^{-2}\mathrm{s}^{-1}$ for the diffuse $\gamma$-ray flux template with a $1.5\sigma$ significance threshold.
