The TOTEM collaboration has measured the proton-proton total cross section at √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 ∼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: σel=(27.1±1.4) mb; σinel=(74. 7±1.7) mb. © 2013 CERN. Published by the American Physical Society.
Luminosity-independent measurement of the proton-proton total cross section at √s=8 TeV / Antchev G.; Aspell P.; Atanassov I.; Avati V.; Baechler J.; Berardi V.; Berretti M.; Bossini E.; Bottigli U.; Bozzo M.; Brucken E.; Buzzo A.; Cafagna F.S.; Calicchio M.; Catanesi M.G.; Covault C.; Csanad M.; Csorgo T.; Deile M.; Doubek M.; Eggert K.; Eremin V.; Ferretti R.; Ferro F.; Fiergolski A.; Garcia F.; Giani S.; Greco V.; Grzanka L.; Heino J.; Hilden T.; Intonti R.A.; Kaspar J.; Kopal J.; Kundrat V.; Kurvinen K.; Lami S.; Latino G.; Lauhakangas R.; Leszko T.; Lippmaa E.; Lokajicek M.; Lo Vetere M.; Lucas Rodriguez F.; Macri M.; Maki T.; Mercadante A.; Minafra N.; 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.; Santroni A.; Scribano A.; Smajek J.; Snoeys W.; Sziklai J.; Taylor C.; Turini N.; Vacek V.; Vitek M.; Welti J.; Whitmore J.; Wyszkowski P.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - ELETTRONICO. - 111:(2013), pp. 0-0. [10.1103/PhysRevLett.111.012001]
Luminosity-independent measurement of the proton-proton total cross section at √s=8 TeV
Latino G.;
2013
Abstract
The TOTEM collaboration has measured the proton-proton total cross section at √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 ∼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: σel=(27.1±1.4) mb; σinel=(74. 7±1.7) mb. © 2013 CERN. Published by the American Physical Society.
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
