Nuclear shadowing in DIS at electron-ion colliders

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00341573" target="_blank" >RIV/68407700:21340/20:00341573 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1140/epjp/s13360-020-00498-2" target="_blank" >https://doi.org/10.1140/epjp/s13360-020-00498-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjp/s13360-020-00498-2" target="_blank" >10.1140/epjp/s13360-020-00498-2</a>

Result language

angličtina

Original language name

Nuclear shadowing in DIS at electron-ion colliders

Original language description

We present a revision of predictions for nuclear shadowing in deep-inelastic scattering at small Bjorken xBj corresponding to kinematic regions accessible by the future experiments at electron-ion colliders. The nuclear shadowing is treated within the color dipole formalism based on the rigorous Green function technique. This allows incorporating naturally color transparency and coherence length effects, which are not consistently and properly included in present calculations. For the lowest |qq> Fock component of the photon, our calculations are based on an exact numerical solution of the evolution equation for the Green function. Here the magnitude of shadowing is tested using a realistic form for the nuclear density function, as well as various phenomenological models for the dipole cross section. The corresponding variation of the transverse size of the qq photon fluctuations is important for xBj>~10-4, on the contrary with the most of other models, which use frequently only the eikonal approximation with the "frozen" transverse size. At xBj<~0.01 we calculate within the same formalism also a shadowing correction for the higher Fock component of the photon containing gluons. The corresponding magnitudes of gluon shadowing correction are compared adopting different phenomenological dipole models. Our results are tested by available data from the E665 and NMC collaborations. Finally, the magnitude of nuclear shadowing is predicted for various kinematic regions that should be scanned by the future experiments at electron-ion colliders.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

EUROPEAN PHYSICAL JOURNAL PLUS

ISSN

2190-5444

e-ISSN

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Volume of the periodical

135

Issue of the periodical within the volume

02 June

Country of publishing house

DE - GERMANY

Number of pages

26

Pages from-to

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UT code for WoS article

000538129500002

EID of the result in the Scopus database

2-s2.0-85085880896