Measurement of proton-proton elastic scattering into the Coulomb region at \(\text{P}_\text{beam}\) = 2.5, 2.8 and 3.2 GeV/c

The proton--proton elastic differential cross section at very small four momentum transfer squared has been measured at three different incident proton momenta in the range of 2.5 to 3.2 GeV/c by detecting the recoil proton at polar angles close to \(90^\circ\). The measurement was performed at COSY...

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Bibliographic Details
Published in:arXiv.org 2020-09
Main Authors: H Xu, Zhou, Y, Bechstedt, U, J Böker, Gillitzer, A, Goldenbaum, F, Grzonka, D, Q Hu, Khoukaz, A, Klehr, F, Lorentz, B, Prasuhn, D, Ritman, J, Schadmand, S, Sefzick, T, Stockmanns, T, Strakovsky, I I, A Täschner, Wilkin, C, Workman, R L, P Wüstner
Format: Article
Language:English
Subjects:
Cross-sections
Elastic scattering
Momentum transfer
Recoil protons
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Summary:The proton--proton elastic differential cross section at very small four momentum transfer squared has been measured at three different incident proton momenta in the range of 2.5 to 3.2 GeV/c by detecting the recoil proton at polar angles close to \(90^\circ\). The measurement was performed at COSY with the KOALA detector covering the Coulomb-nuclear interference region. The total cross section \(\sigma_\text{tot}\), which has been determined precisely, is consistent with previous measurements. The values of the slope parameter \(B\) and the relative real amplitude ratio \(\rho\) determined in this experiment alleviate the lack of data in the relevant energy region. This precise data on \(\rho\) might be an important check for a new dispersion analysis.
ISSN:2331-8422
DOI:10.48550/arxiv.2009.14299