Search for the Higgs boson decays H -> ee and H -> e mu in pp collisions at root s=13 TeV with the ATLAS detector

• Published in: Physics letters. B Vol. 801
• Main Authors: Backman, Filip, Barranco Navarro, Laura, Bohm, Christian, Carney, Rebecca M. D., Clément, Christophe, Hellman, Sten, Jon-And, Kerstin, Kastanas, Alexandros, Milstead, David A., Moa, Torbjörn, Nelson, Michael E., Pasuwan, Patrawan, Shaikh, Nabila W., Silverstein, Samuel B., Sjölin, Jörgen, Strandberg, Sara, Valdes Santurio, Eduardo, Wallängen, Veronica
• Format: Journal Article
• Language: English
• Published: 2020
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/j.physletb.2019.135148

Searches for the Higgs boson decays H -> ee and H -> e mu are performed using data corresponding to an integrated luminosity of 139 fb(-1) collected with the ATLAS detector in pp collisions at root s = 13 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 B(H -> ee) is 3.6 x 10(-4) (3.5 x 10(-4)) and on B(H -> e mu) is 6.2 x 10(-5) (5.9 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 -> e mu) respectively.