Szczegóły publikacji
Opis bibliograficzny
Measurement of the total cross section in proton proton collisions at $\sqrt{s}=7$ TeV with the ALFA sub-detector of ATLAS / Leszek ADAMCZYK // PoS Proceedings of Science [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1824-8039. — 2015 — vol. 247 art. no. 061, s. 1–7. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 7. — Publikacja dostępna online od: 2016-01-29. — DIS 2015 : XXIII international workshop on Deep-Inelastic Scattering and related subjects : Dallas, April 27 – May 1, 2015
Autor
Dane bibliometryczne
| ID BaDAP | 96357 |
|---|---|
| Data dodania do BaDAP | 2016-02-25 |
| Tekst źródłowy | URL |
| DOI | 10.22323/1.247.0061 |
| Rok publikacji | 2015 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | PoS Proceedings of Science |
Abstract
A measurement of the total pp cross section at the LHC at √s = 7 TeV by the ATLAS experiment 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 subdetector 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.) GeV2.