Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/57676
Título: | Measurement of the total cross section from elastic scattering in pp collisions at root s=7 TeV with the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Data: | 2014 |
Editora: | Elsevier Science BV |
Revista: | Nuclear Physics B |
Resumo(s): | A measurement of the total pp cross section at the LHC at s=7 TeV is presented. In a special run with high- β⋆ beam optics, an integrated luminosity of 80 μb −1 was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t . The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01 GeV2 to 0.1 GeV2 to extrapolate to |t|→0 , the total cross section, σtot(pp→X) , is measured via the optical theorem to be: σtot(pp→X)=95.35±0.38(stat.)±1.25(exp.)±0.37(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t|→0 . In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.) GeV−2 . |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/57676 |
DOI: | 10.1016/j.nuclphysb.2014.10.019 |
ISSN: | 0550-3213 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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10.1016_j.nuclphysb.2014.10.019.pdf | 2,19 MB | Adobe PDF | Ver/Abrir |