Searches for the Resonant Production of ZH/ZW/ZZ Pairs in the llqq Final State in Proton-Proton Collisions at s = 13 TeV with the ATLAS Detector

ATLAS;LHC;13 TeV;BSM;Diboson;2HDM;Physics;Science;Physics

Xi, ZhaoxuZhou, Bing ;

University of Michigan

关键词: ATLAS;    LHC;    13 TeV;    BSM;    Diboson;    2HDM;    Physics;    Science;    Physics;   

Others  :  https://deepblue.lib.umich.edu/bitstream/handle/2027.42/145964/xzhaoxu_1.pdf?sequence=1&isAllowed=y

瑞士|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

Searches are presented for heavy resonances decaying into a Z boson and another boson (a W boson, a Z boson, or a heavy Higgs boson H) using data from proton-proton collisions at a center-of-mass energy of 13 TeV. The data were collected with the ATLAS detector in 2015 and 2016 at the Large Hadron Collider and correspond to a total integrated luminosity of 36.1 inverse-fb. The searches are performed in the llqq final state wherein the Z boson decays into a pair of electrons or muons (l = e, u), and the other boson decays into two quarks (q). The decay product of the hadronically decaying boson is reconstructed as either two jets with small radii or a single large-radius jet, depending on the transverse momentum of the boson. No evidence for resonant production of ZH, ZW, or ZZ pairs is observed. Upper limits are derived at 95% confidence level on the product of the production cross section of a resonance and its decay branching ratio(s) for the selected benchmark signal models. The results are interpreted in the context of extensions of the Standard Model with additional Higgs bosons (e.g. a two-Higgs-doublet model), heavy vector triplets (a model independent framework for the interpretation of spin-1 resonances), and the Randall-Sundrum framework with a warped extra dimension.