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Elastic Scattering and Total Cross-Section in p+p Reactions

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27

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0

References

2012

Year

T. Csörgő, G. Antchev, P. Aspell, I. Atanassov, V. Avati, Joachim Baechler, V. Berardi, M. Berretti, E. Bossini, M. Bozzo,
Progress of Theoretical Physics Supplement

Abstract

Proton-proton elastic scattering has been measured by the TOTEM experiment at the CERN Large Hadron Collider at $\\sqrt{s} = 7 $ TeV in special runs with the Roman Pot detectors placed as close to the outgoing beam as seven times the transverse beam size. The differential cross-section measurements are reported in the |t|-range of 0.36 to 2.5 GeV$^2$. Extending the range of data to low t values from 0.02 to 0.33 GeV$^2$,and utilizing the luminosity measurements of CMS, the total proton-proton cross section at $\\sqrt{s}$ = 7 TeV is measured to be $(98.3 \\pm 0.2^{stat} \\pm 2.8^{syst})$ mb.