Search for supersymmetry in final states with charm jets and missing transverse momentum in 13 TeV pp collisions with the ATLAS detector

Abstract

A search for supersymmetric partners of top quarks decaying as t˜1 → cχ˜ 0 1 and supersymmetric partners of charm quarks decaying as ˜c1 → cχ˜ 0 1, where χ˜ 0 1 is the lightest neutralino, is presented. The search uses 36.1 fb−1 pp collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS experiment at the Large Hadron Collider and is performed in final states with jets identified as containing charm hadrons. Assuming a 100% branching ratio to cχ˜ 0 1, top and charm squarks with masses up to 850 GeV are excluded at 95% confidence level for a massless lightest neutralino. For mt˜1,c˜1 − mχ˜ 0 1 < 100 GeV, top and charm squark masses up to 500 GeV are excluded.