Re-visiting the bounds on hydrogen-antihydrogen oscillations from diffuse $\gamma$-ray surveys

Yuval Grossman, Wee Hao Ng, Shamayita Ray

Surveys of diffuse $\gamma$-ray in the interstellar medium (ISM) can be used to probe hydrogen-antihydrogen oscillations, by detecting the $\gamma$-ray emission from antihydrogen annihilatio…