Programme

O.27 -- Oral, VCTP-51

Date: Tuesday, 4 August 2026

Time: 16:00 - 16:25

First predictions for triply polarized $WWW$ cross sections production at the LHC at LO

Van Cuong Le (1), Duc Ninh Le (1), Thi Nhung Dao (1)

(1) Phenikaa Institute for Advanced Study, Phenikaa University, Hanoi 12116, Vietnam

First results on triply polarized $WWW$ cross sections at the LHC are presented. The Standard Model calculation is performed at leading order for the fully leptonic decay mode using inclusive kinematic cuts. For $W^-W^+W^+$, the triply-transverse fraction reaches about $51\%$, whereas the triply-longitudinal (LLL) fraction is minimal at $1.4\%$. Remarkably, this is even smaller than the interference contribution ($+1.8\%$). Because the LLL fraction is heavily suppressed relative to the interference contribution and radiative corrections are not expected to substantially increase its share based on higher-order diboson data, isolating this polarized cross section at the LHC represents a formidable experimental challenge. Moreover, a new on-shell mapping for triboson processes is developed to enable these polarized cross-section calculations. Details of our results are avaiable in arXiv:2603.02917

Presenter: Le Van Cuong