The TOTEM collaboration has measured the proton-proton total cross section at root s = 8 TeV using a luminosity-independent method. In LHC fills with dedicated beam optics, the Roman pots have been inserted very close to the beam allowing the detection of similar to 90% of the nuclear elastic scattering events. Simultaneously the inelastic scattering rate has been measured by the T1 and T2 telescopes. By applying the optical theorem, the total proton-proton cross section of (101.7 +/- 2.9) mb has been determined, well in agreement with the extrapolation from lower energies. This method also allows one to derive the luminosity-independent elastic and inelastic cross sections: sigma(el) = (27.1 +/- 1.4) mb; sigma(inel) = (74.7 +/- 1.7) mb.

G., A., P., A., I., A., V., A., J., B., V., B., et al. (2013). Luminosity-Independent Measurement of the Proton-Proton Total Cross Section at root s=8 TeV. PHYSICAL REVIEW LETTERS, 111(1) [10.1103/PhysRevLett.111.012001].

Luminosity-Independent Measurement of the Proton-Proton Total Cross Section at root s=8 TeV

BERRETTI, MIRKO;BOSSINI, EDOARDO;BOTTIGLI, UBALDO;SCRIBANO, ANGELO;TURINI, NICOLA;
2013-01-01

Abstract

The TOTEM collaboration has measured the proton-proton total cross section at root s = 8 TeV using a luminosity-independent method. In LHC fills with dedicated beam optics, the Roman pots have been inserted very close to the beam allowing the detection of similar to 90% of the nuclear elastic scattering events. Simultaneously the inelastic scattering rate has been measured by the T1 and T2 telescopes. By applying the optical theorem, the total proton-proton cross section of (101.7 +/- 2.9) mb has been determined, well in agreement with the extrapolation from lower energies. This method also allows one to derive the luminosity-independent elastic and inelastic cross sections: sigma(el) = (27.1 +/- 1.4) mb; sigma(inel) = (74.7 +/- 1.7) mb.
G., A., P., A., I., A., V., A., J., B., V., B., et al. (2013). Luminosity-Independent Measurement of the Proton-Proton Total Cross Section at root s=8 TeV. PHYSICAL REVIEW LETTERS, 111(1) [10.1103/PhysRevLett.111.012001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/48469
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