Measurement of the total cross section from elastic scattering in pp collisions at √s = 8 TeV with the ATLAS detector

0471124 - FZÚ 2017 RIV NL eng J - Článek v odborném periodiku
Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2861 autorů
Measurement of the total cross section from elastic scattering in pp collisions at √s = 8 TeV with the ATLAS detector.
Physics Letters. B. Roč. 761, Oct (2016), 158-178. ISSN 0370-2693. E-ISSN 1873-2445
Institucionální podpora: RVO:68378271
Klíčová slova: CERN LHC Coll * beam optics * beta function * cross section * slope * experimental results * 8000 GeV-cms
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.807, rok: 2016

A measurement of the total pp cross section at the LHC at s=8 TeV is presented. An integrated luminosity of 500 μb−1 was accumulated in a special run with high- β⋆ beam optics 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 0.014 GeV2 to 0.1 GeV2 to extrapolate t→0 , the total cross section, σtot(pp→X) , is measured via the optical theorem to be σtot(pp→X)=96.07±0.18(stat.)±0.85(exp.)±0.31(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 t→0 .

Trvalý link: http://hdl.handle.net/11104/0268571