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Measurement of elastic pp scattering at √s = 8TeV in the Coulomb-nuclear interference region – determination of the ρ-parameter and the total cross-section
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SYSNO ASEP 0470721 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Measurement of elastic pp scattering at √s = 8TeV in the Coulomb-nuclear interference region – determination of the ρ-parameter and the total cross-section Author(s) Antchev, G. (BG)
Aspell, P. (CH)
Atanassov, I. (BG)
Kašpar, Jan (FZU-D) RID, ORCID
Kopal, Josef (FZU-D)
Kundrát, Vojtěch (FZU-D) RID, ORCID
Lokajíček, Miloš V. (FZU-D) RID, ORCID
Procházka, Jiří (FZU-D) RID, ORCIDNumber of authors 89 Article number 661 Source Title European Physical Journal C. - : Springer - ISSN 1434-6044
Roč. 76, č. 12 (2016), s. 1-21Number of pages 21 s. Language eng - English Country US - United States Keywords elastic pp scattering ; Coulomb-nuclear interference Subject RIV BF - Elementary Particles and High Energy Physics Institutional support FZU-D - RVO:68378271 UT WOS 000389611600001 EID SCOPUS 85002253446 DOI 10.1140/epjc/s10052-016-4399-8 Annotation The TOTEM experiment at the CERN LHC has measured elastic proton-proton scattering at the centre-of-mass energy √s = 8 TeV and four-momentum transfers squared, |t|, from 6×10^(−4) GeV^2 to 0.2 GeV^2. The data exclude the traditional Simplified West and Yennie interference formula that requires a constant phase and a purely exponential modulus of the hadronic amplitude. For parametrisations of the hadronic modulus with second- or third-order polynomials in the exponent, the data are compatible with hadronic phase functions giving either central or peripheral behaviour in the impact parameter picture of elastic scattering. In both cases, the ρ-parameter is found to be 0.12±0.03. The results for the total hadronic cross-section are σtot =(102.9±2.3) mb and (103.0±2.3) mb for central and peripheral phase formulations, respectively.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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