PoS - Proceedings of Science
Volume 364 - European Physical Society Conference on High Energy Physics (EPS-HEP2019) - QCD and Hadronic Physics
Lévy imaging of elastic scattering and proton hollowness at 13 TeV
T. Csorgo, R. Pasechnik* and A. Ster
Full text: pdf
Pre-published on: June 10, 2020
Published on: November 12, 2020
The shape of elastic differential cross section within and beyond the diffractive cone at 13 TeV $pp$ collision energy has been shown to be precisely described by the Lévy series expansion in whole available range of momentum transfers. This way, the crucial information about the real and imaginary parts of the elastic amplitude has been obtained resulting in precision reconstruction of the proton inelasticity profile. We have found that the profile function $P(b)$ undergoes a qualitative change at $\sqrt{s} \approx 7 $ TeV collision energy. At small values of the impact parameter $b$ a $P(b) \approx 1$ plateaux develops, which becomes depressed at larger energies, such that a shallow minimum is formed near $b = 0$. We have evaluated the corresponding error bar and found such a hotly debated proton hollowness (or ``black-ring'') effect with beyond 5$\sigma$ significance.
DOI: https://doi.org/10.22323/1.364.0532
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.