Evidence for the maximally entangled low x proton in Deep Inelastic Scattering

3 May 2022, 10:40
20m
Parallel talk WG2: Small-x, Diffraction and Vector Mesons WG2: Small-x, Diffraction and Vector Mesons

Speaker

Krzysztof Marek Kutak (Polish Academy of Sciences (PL))

Description

We investigate the proposal by Kharzeev and Levin of a maximally entangled proton wave function in Deep Inelastic Scattering at low x and the proposed relation between parton number and final state hadron multiplicity. Contrary to the original formulation we determine partonic entropy from the sum of gluon and quark distribution functions at low x, which we obtain from an unintegrated gluon distribution subject to next-to-leading order Balitsky-Fadin-Kuraev-Lipatov evolution. We find for this framework very good agreement with H1 data. We furthermore provide a comparison based on NNPDF parton distribution functions at both next-to-next-to-leading order and next-to-next-to-leading with small x resummation, where the latter provides an acceptable description of data.

Submitted on behalf of a Collaboration? No

Author

Krzysztof Marek Kutak (Polish Academy of Sciences (PL))

Co-author

Martin Hentschinski (Universidad de las Americas, Puebla)

Presentation materials