PoS - Proceedings of Science
Volume 297 - XXV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2017) - WG2 Low x and Diffraction
Elastic and Total Cross-Section Measurements by TOTEM: Past and Future
F.J. Nemes
Full text: pdf
Pre-published on: October 21, 2017
Published on: January 16, 2018
The TOTEM experiment at the LHC has measured proton-proton elastic scattering in dedicated runs at $\sqrt{s}$ = 7, 8 and 2.76 TeV centre-of-mass LHC energies. The proton-proton total cross-section $\sigma_{\rm tot}$ has been derived for each energies using a luminosity independent method. TOTEM has excluded a purely exponential differential cross-section for elastic proton-proton scattering with significance greater than 7 $\sigma$ in the |t| range from 0.027 to 0.2 GeV$^{2}$ at $\sqrt{s}$ = 8 TeV. The $\rho$ parameter has been measured at $\sqrt{s}$ = 8 TeV via the Coulomb-nuclear interference, and was found to be $\rho$ = 0.12 $\pm$ 0.03.
DOI: https://doi.org/10.22323/1.297.0059
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