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

TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of √s = 7TeV analyzing data from a short run with dedicated large Beta∗ optics. A single exponential fit with B = 20.1GeV**−2 (all errors are given in the text) describes the lowest range of the...

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Detalles Bibliográficos
Autores principales: Antchev, G., Aspell, P., Atanassov, I., Avati, V., Baechler, J., Berardi, V., Berretti, M., Bossini, E., Bozzo, M., Brogi, P., Brücken, E., Buzzo, A., Cafagna, F., Calicchio, M., Catanesi, M.G., Covault, C., Csörgõ, 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, M.R., Kaspar, J., Kopal, J., Kundrát, V., Kurvinen, K., Lami, S., Latino, G., Lauhakangas, R., Leszko, T., Lippmaa, E., Lokajícek, M., Lo Vetere, M., Lucas Rodríguez, F., Macrí, M., Magaletti, L., Mercadante, A., Minutoli, S., Nemes, F., Niewiadomski, H., Oliveri, E., Oljemark, F., Orava, R., Oriunno, M., Österberg, K., Palazzi, P., Procházka, 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., Vítek, M., Welti, J., Whitmore, J.
Lenguaje:eng
Publicado: 2011
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1209/0295-5075/96/21002
http://cds.cern.ch/record/1383030
Descripción
Sumario:TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of √s = 7TeV analyzing data from a short run with dedicated large Beta∗ optics. A single exponential fit with B = 20.1GeV**−2 (all errors are given in the text) describes the lowest range of the squared four-momentum transfer |t| from 0.02 to 0.3GeV**2. After the extrapolation to |t| = 0, a total elastic scattering cross-section of 24.8mb was obtained. Applying the Optical Theorem and using the luminosity measurement from CMS, a total proton-proton cross-section of 98.3mb was deduced which is in good agreement with the expectation from the overall fit of previously measured data over a large range of energies. From the total and elastic pp cross-section measurements, an inelastic pp cross-section of (73:5{\pm}0:6stat +1:8 -1:3 syst) mb was inferred. PACS 13.60.Hb: Total and inclusive cross sections

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