TOTEM, recent experimental review

The TOTEM (TOTal cross section, Elastic scattering and diffraction dissociation Measurement at the LHC) experiment, located interaction point 5 of LHC, has measured total, elastic inelastic proton-proton crosssections, using a luminosity independent method, based on optical theorem, in center-of-mass energy range from 2.76 to 13 TeV. was investigated wide squared four-momentum transfer |t| allowing study Coulomb-nuclear interference region down | t ∼ 8 × 10 −4 GeV2. This made possible first measurement ρ parameter √s = TeV, being ratio between real imaginary part nuclear amplitude 0. measurement, combined with total crosssection results, led exclusion all models classified published by COMPETE Collaboration. results obtained are indeed compatible predictions colourless 3-gluon bound state exchange t-channel scattering, as postulated alternative theoretical both Regge-like framework modern QCD framework. result been confirmed, significance 5.4σ, also comparison pp data D0 collaboration Fermilab. In this contribution experiment will be described, along actual status, future physics program for LHC Run 3.