Saygin, Kadir2026-07-012026-07-0120251300-01011303-6122https://doi.org/10.55730/1300-0101.2791https://search.trdizin.gov.tr/tr/yayin/detay/1393297https://hdl.handle.net/20.500.12684/23178The paper presents for the first time a phenomenological assessment which focuses on the charge asymmetry phenomenon for the W gamma production process with subsequent leptonic decay modes W+gamma-+ l+nu l gamma and W-gamma-+ l-nul gamma in proton-proton ( pp) collisions. Charge asymmetry for the leptonic W gamma process is predicted by the inclusion of genuine next-to-next-to-leading order (NNLO) corrections in the QCD perturbation theory. NNLO predictions of asymmetry distributions are assessed for the key observables, including the decay lepton and photon pseudorapidities eta l and eta gamma , respectively, and the lepton-photon pseudorapidity correlation triangle eta(l, gamma). The predictions are presented by focusing on realistic fiducial phase-space definitions in comparison at various pp-collision energies of 13 TeV, 14 TeV, and 100 TeV. The sensitivity of the predicted asymmetry distributions to an important observation known as radiation amplitude zero in the W gamma process is reported. The asymmetry distribution for the triangle eta(l, gamma) is shown to be important for probing the radiation-zero effect in the presence of high-transverse momentum photons. The impact of imposing jet veto for the final state of the W gamma process on the asymmetry distributions is reported for future pp-collision energies. Prospects of phase-space definitions including a jet veto and harder-photon recoil are discussed to compensate for the negative impact of increasing collision energy on the asymmetry distributions. The charge asymmetry distributions are proposed as sensitive observables that offer a unique opportunity for stringent tests of the SM and represent a novel method for probing departure from the SM in indirect searches for new-physics effects, independently from the existing direct searches for anomalous WW gamma coupling regarding the W gamma final state.en10.55730/1300-0101.2791info:eu-repo/semantics/openAccessHigh-Energy Physics PhenomenologyGauge Boson Pair ProductionCharge Asymmetry In W Gamma Decay ProcessRadiation Amplitude Zero Of W GammaNnlo Qcd Prediction For W GammaArticle49513932972-s2.0-105028156427WOS:001599189400005Q2Q3