Počet záznamů: 1  

Luminosity-independent measurement of the proton-proton total cross section at √ s = 8 TeV

  1. 1. 0397514 - FZU-D 2014 RIV US eng J - Článek v odborném periodiku
    Antchev, G. - Aspell, P. - Atanassov, I. - Kašpar, Jan - Kopal, Josef - Kundrát, Vojtěch - Procházka, Jiří - Lokajíček, Miloš V.
    Luminosity-independent measurement of the proton-proton total cross section at √ s = 8 TeV.
    Physical Review Letters. Roč. 111, č. 1 (2013), "012001-1"-"012001-6" ISSN 0031-9007
    Grant CEP: GA MŠk LA08015
    Institucionální podpora: RVO:68378271
    Klíčová slova: proton-proton elastic and total cross-sections * LHC
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 7.728, rok: 2013

    TOTEM has measured the proton-proton total cross section at $/sqrt{s} = 8$ 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 has been measured by the T1 and T2 telescopes. By applying the optical theorem, the total proton-proton cross section of (101.7 $/pm$ 2.9) mb has been determined, well in agreement with the extrapolation from lower energies. This method allows also one to derive the luminosity-independent elastic and inelastic cross sections: σ$_{el}$ = (27.1 $/pm$ 1.4) mb; σ$_{inel}$ = (74.7 $/pm$ 1.7) mb.
    Trvalý link: http://hdl.handle.net/11104/0225121