Hernández Juárez, Alan IgnacioFernández Téllez, ArturoHernández Juárez, Alan Ignacio; 0000-0003-0108-7358Fernández Téllez, Arturo; 0000-0003-0152-4220Vergara Eslava, Oswaldo Alan2026-04-172026-04-172025-10https://hdl.handle.net/20.500.12371/32021"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".pdfengCIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRAFísica--Física nuclear y de partículas--Física de partículas elementales--Partículas nucleares y subnucleares especiales, antipartículas y familias de partículas--BosonesBosones de Higgs--InvestigaciónPartículas (Física nuclear)--DecaimientoTesis de licenciaturaopenAccess