Abstract
A search for high-mass resonances decaying to τν using proton-proton collisions at sqrt[s]=13 TeV produced by the Large Hadron Collider is presented. Only τ-lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb^{-1}. No statistically significant excess above the standard model expectation is observed; model-independent upper limits are set on the visible τν production cross section. Heavy W^{'} bosons with masses less than 3.7TeV in the sequential standard model and masses less than 2.2-3.8TeV depending on the coupling in the nonuniversal G(221) model are excluded at the 95% credibility level.
Highlights
Heavy charged gauge bosons (W0) appear frequently in theories of physics beyond the standard model (SM)
The model predicts W0NU and Z0NU bosons which are approximately degenerate in mass and couple only to left-handed fermions
At leading order and neglecting sign, the W0NU couplings to heavy fermions are scaled by cot φNU relative to those of W0SSM
Summary
Pffiffi A search for high-mass resonances decaying to τν using proton-proton collisions at s 1⁄4 13 TeV produced by the Large Hadron Collider is presented. Heavy charged gauge bosons (W0) appear frequently in theories of physics beyond the standard model (SM). They are often assumed to obey lepton universality, such as in the sequential standard model (SSM) [1], which predicts a W0SSM boson with couplings identical to those of the SM. Models in which the W0 boson couples preferentially to third-generation fermions may be linked to the high mass of the top quark [2,3,4,5] or to recent indications of lepton flavor universality violation in B meson decays [6,7]. A direct search for high-mass resonances decaying to τν has been 19.7 fb−1 performed by the CMS of integrated luminosity aCt opllaffisffib1⁄4ora8tioTneVus[i8n]g
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