Search for high-mass new phenomena in the dilepton final state using proton-proton collisions at s√=13 TeV with the ATLAS detector

H. WAHLBERG Y ATLAS COLLABORATION

PHYSICS LETTERS B

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2016

0370-2693

A search is conducted for both resonant and non-resonant high-mass new phenomena in−1dielectron and√ dimuon final states. The search uses 3.2 fb of proton?proton collision data,collected at s = 13 TeV by the ATLAS experiment at the LHC in 2015. The dilepton invari-ant mass is used as the discriminating variable. No significant deviation from the StandardModel prediction is observed; therefore limits are set on the signal model parameters of in-terest at 95% credibility level. Upper limits are set on the cross-section times branching ratiofor resonances decaying to dileptons, and the limits are converted into lower limits on theresonance mass, ranging between 2.74 TeV and 3.36 TeV, depending on the model. Lowerlimits on the llqq contact interaction scale are set between 16.7 TeV and 25.2 TeV, alsodepending on the model.