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Elastic and diffractive scatterings in the LHC era

Bogolyubov Institute for Theoretical Physics (BITP), Ukrainian National Academy of Sciences, 14-b Metrologicheskaya Str., 03680 Kiev, Ukraine

E-mail Address: jenk@bitp.kiev.ua

Corresponding author.

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Rainer Schicker

Physikalisches Institut, Heidelberg University, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany

E-mail Address: schicker@physi.uni-heidelberg.de

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, and

István Szanyi

Uzhgorod National University, 14 Universytets’ka Str., 88000 Uzhgorod, Ukraine

E-mail Address: sz.istvan03@gmail.com

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https://doi.org/10.1142/S0218301318300059Cited by:16 (Source: Crossref)

Abstract

We review the elastic and diffractive scatterings of protons (called also the “forward physics”) with emphasis on the LHC data, especially those deviating from the expectations based on extrapolations from earlier measurements at the ISR and Fermilab and thus triggering searches for new ideas, models and theories. We list these new data and provide a brief introduction of available theoretical approaches, mainly those based on analyticity, crossing symmetry and unitarity, particularly the Regge pole model realizing these concepts. Fits to the data are presented and tensions between theoretical predictions and the data that may indicate the way to further progress are in the focus of our paper.

Keywords:

PACS: 12.40.Nn, 11.55.Jy

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