Measurement of the total cross section from elastic scattering in pp collisions at √s = 7 TeV with the ATLAS detector

0441138 - FZÚ 2015 RIV NL eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abdallah, J. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2900 autorů
Measurement of the total cross section from elastic scattering in pp collisions at √s = 7 TeV with the ATLAS detector.
Nuclear Physics. B. Roč. 889, Dec (2014), 486-548. ISSN 0550-3213. E-ISSN 1873-1562
Grant CEP: GA MŠMT(CZ) LG13009
Institucionální podpora: RVO:68378271
Klíčová slova: total cross section * ATLAS * elastic scattering * momentum transfer * optical theorem * CERN LHC Coll * beam optics * slope * star
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 3.929, rok: 2014

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 .
Trvalý link: http://hdl.handle.net/11104/0244191