Search for the Higgs boson decays H → ee and H → eμ in pp collisions at √s = 13 TeV with the ATLAS detector

Searches for the Higgs boson decays H → ee and H → eμ are performed using data corresponding to an integrated luminosity of 139 fb^-1  collected with the ATLAS detector in pp collisions at √s = TeV at the LHC. No significant signals are observed, in agreement with the Standard Model expectation. For a Higgs boson mass of 125 GeV, the observed (expected) upper limit at the 95% confidence level on the branching fraction is B(H → ee ) is 3.6 x 10^-4 and on is B(H → eμ) is 6.2 x 10^-5. These results represent improvements by factors of about five and six on the previous best limits on B(H → ee ) and B(H → eμ) respectively.