TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of root s = 7 TeV analysing data from a short run with dedicated large-beta* optics. A single exponential fit with a slope B = (20.1 +/- 0.2(stat) +/- 0.3(syst)) GeV(-2) describes the range of the four-momentum transfer squared vertical bar t vertical bar from 0.02 to 0.33 GeV(2). After the extrapolation to vertical bar t vertical bar = 0, a total elastic scattering cross-section of (24.8 +/- 0.2(stat) +/- 1.2(syst)) mb was obtained. Applying the optical theorem and using the luminosity measurement from CMS, a total proton-proton cross-section of (98.3 +/- 0.2(stat) +/- 2.8(syst)) 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 (73.5 +/- 0.6(stat) (+1.8)(-1.3) (syst)) mb was inferred.

First measurement of the total proton-proton cross-section at the LHC energy of root s=7 TeV / Antchev, G; Aspell, P; Atanassov, I; Avati, V; Baechler, J; Berardi, Vincenzo; Berretti, M; Bossini, E; Bozzo, M; Brogi, P; Brucken, E; Buzzo, A; Cafagna, Fs; Calicchio, M; Catanesi, Mg; Covault, C; Csorgo, T; Deile, M; Eggert, K; Eremin, V; Ferretti, R; Ferro, F; Fiergolski, A; Garcia, F; Giani, S; Greco, V; Grzanka, L; Heino, J; Hilden, T; Intonti, Mr; Kaspar, J; Kopal, J; Kundrat, V; Kurvinen, K; Lami, S; Latino, G; Lauhakangas, R; Leszko, T; Lippmaa, E; Lokajicek, M; Lo Vetere, M; Rodriguez, Fl; Macri, M; Magaletti, Lorenzo; Mercadante, A; Minutoli, S; Nemes, F; Niewiadomski, H; Oliveri, E; Oljemark, F; Orava, R; Oriunno, M; Osterberg, K; Palazzi, P; Prochazka, J; Quinto, M; Radermacher, E; Radicioni, E; Ravotti, F; Robutti, E; Ropelewski, L; Ruggiero, G; Saarikko, H; Sanguinetti, G; Santroni, A; Scribano, A; Snoeys, W; Sziklai, J; Taylor, C; Turini, N; Vacek, V; Vitek, M; Welti, J; Whitmore, J.. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - 96:2(2011). [10.1209/0295-5075/96/21002]

First measurement of the total proton-proton cross-section at the LHC energy of root s=7 TeV

BERARDI, Vincenzo;MAGALETTI, Lorenzo;
2011-01-01

Abstract

TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of root s = 7 TeV analysing data from a short run with dedicated large-beta* optics. A single exponential fit with a slope B = (20.1 +/- 0.2(stat) +/- 0.3(syst)) GeV(-2) describes the range of the four-momentum transfer squared vertical bar t vertical bar from 0.02 to 0.33 GeV(2). After the extrapolation to vertical bar t vertical bar = 0, a total elastic scattering cross-section of (24.8 +/- 0.2(stat) +/- 1.2(syst)) mb was obtained. Applying the optical theorem and using the luminosity measurement from CMS, a total proton-proton cross-section of (98.3 +/- 0.2(stat) +/- 2.8(syst)) 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 (73.5 +/- 0.6(stat) (+1.8)(-1.3) (syst)) mb was inferred.
2011
First measurement of the total proton-proton cross-section at the LHC energy of root s=7 TeV / Antchev, G; Aspell, P; Atanassov, I; Avati, V; Baechler, J; Berardi, Vincenzo; Berretti, M; Bossini, E; Bozzo, M; Brogi, P; Brucken, E; Buzzo, A; Cafagna, Fs; Calicchio, M; Catanesi, Mg; Covault, C; Csorgo, T; Deile, M; Eggert, K; Eremin, V; Ferretti, R; Ferro, F; Fiergolski, A; Garcia, F; Giani, S; Greco, V; Grzanka, L; Heino, J; Hilden, T; Intonti, Mr; Kaspar, J; Kopal, J; Kundrat, V; Kurvinen, K; Lami, S; Latino, G; Lauhakangas, R; Leszko, T; Lippmaa, E; Lokajicek, M; Lo Vetere, M; Rodriguez, Fl; Macri, M; Magaletti, Lorenzo; Mercadante, A; Minutoli, S; Nemes, F; Niewiadomski, H; Oliveri, E; Oljemark, F; Orava, R; Oriunno, M; Osterberg, K; Palazzi, P; Prochazka, J; Quinto, M; Radermacher, E; Radicioni, E; Ravotti, F; Robutti, E; Ropelewski, L; Ruggiero, G; Saarikko, H; Sanguinetti, G; Santroni, A; Scribano, A; Snoeys, W; Sziklai, J; Taylor, C; Turini, N; Vacek, V; Vitek, M; Welti, J; Whitmore, J.. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - 96:2(2011). [10.1209/0295-5075/96/21002]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/2909
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