First measurement of the total proton-proton cross-section at the LHC energy of

By G. Antchev, P. Aspell, I. Atanassov, V. Avati, J. Baechler, V. Berardi, M. Berretti, E. Bossini, M. Bozzo, P. Brogi and 64 more. 2011

263 citations recorded by the source corpus.

TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of analysing data from a short run with dedicated large-β* optics. A single exponential fit with a slope B=(20.1±0.2stat±0.3syst) GeV−2 describes the range of the four-momentum transfer squared |t| from 0.02 to 0.33 GeV2. After the extrapolation to |t|=0, a total elastic scattering cross-section of (24.8±0.2stat±1.2syst) mb was obtained. Applying the optical theorem and using the luminosity measurement from CMS, a total proton-proton cross-section of (98.3±0.2stat±2.8syst) mb was deduced which is in good agreement with the expectation from the overall fit of previously measured data over a large range of center-of-mass energies. From the total and elastic pp cross-section measurements, an inelastic pp cross-section of was inferred.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/0e834c4ccfd50101eb2a37360b433c5658eb3ff5

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Performance of b-jet identification in the ATLAS experiment (2015, methodology): “[13, 14], and is used to scale the 〈μ〉 values prior to the reweighting described above, to bring the numbers of reconstructible interactions in agreement between data and simulated events.”
Event generator tunes obtained from underlying event and multiparton scattering measurements (2015, methodology): “TOTEM data at √ s = 7 TeV [48] for the charged-particle pseudorapidity distribution, dNch/dη, in inclusive inelastic pp collisions (pT > 40 MeV, Nchg ≥ 1) (top right).”