Search for New Particles Decaying to Hadronic Jets in Proton-Proton Collision at s = 13 TeV

[摘要] This thesis presents a search for new resonances decaying to pairs of jets in 37 fb−1 of proton-proton collision data produced by the Large Hadron Collider at a center-of-mass energy of 13 TeV. The data was collected in 2015 and 2016 by the ATLAS detector. A new resonance search algorithm - SWiFt - was used to reduce the uncertainty in the data-driven estimate of the unknown backgrounds. SWiFt was utilized in a model-independent search, and also to perform model-dependent searches for excited quarks (q∗) and heavy gauge bosons (W ′). No evidence for new phenomena was observed, so 95% confidence-level upper limits were calculated on the production rates of q∗ and W′. Upper limits were also calculated for Gaussian models which represent first-order approximations for many theoretical models that predict new particles decaying to two jets.

[发布机构] University of Michigan

[效力级别] New statistical tool - SWiFt.

[关键词] Resonance search for new particles.;New statistical tool - SWiFt.;Physics;Statistics and Numeric Data;Science;Physics