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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

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, ORCID}
Number of authors	89
Article number	661
Source Title	European Physical Journal C. - : Springer - ISSN 1434-6044 Roč. 76, č. 12 (2016), s. 1-21
Number 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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