Browsing by Author "Vergara Eslava, Oswaldo Alan"

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    Tesis de licenciatura
    Properties of a Higgs boson at 95 GeV at LHC
    (Benemérita Universidad Autónoma de Puebla, 2025-10) Vergara Eslava, Oswaldo Alan; Hernández Juárez, Alan Ignacio; 0000-0003-0108-7358; Fernández Téllez, Arturo; 0000-0003-0152-4220
    "After the discovery of the 125 GeV Higgs boson, several small but persistent excesses near 95 GeV in γγ, τ +τ − and ¯bb final states reported by CMS, ATLAS and LEP have revived the search for an additional scalar. Motivated by these anomalies, we study a hypothetical Higgs-like state ϕ at mϕ = 95.4 GeV produced via gluon fusion at the LHC. Using an effective Lagrangian, analytic decay-width formulae are obtained for ϕ → γγ, τ +τ − and ¯bb, introducing CP-even/odd form factors h1, h3 and scalar/pseudoscalar couplings gs, gp. Three production benchmarks (κ = 1, 1 2 , 2) simulate potential variations in the gluon–fusion cross-section. A parameter scan, constrained by the measured signal strengths µγγ, µττ , and µbb, delineates closed annular regions of allowable values for h1, h2 in the ϕ → γγ decay, and gs, gp in the ϕ → τ +τ −, ¯bb decays".