Measurement of charged particle multiplicity distributions in DIS at HERA and its implication to entanglement entropy of partons

0552649 - FZÚ 2022 RIV DE eng J - Journal Article
Andreev, V. - Baghdasaryan, A. - Baty, A. - Cvach, Jaroslav - Hladký, Jan - Reimer, Petr … Total 139 authors
Measurement of charged particle multiplicity distributions in DIS at HERA and its implication to entanglement entropy of partons.
European Physical Journal C. Roč. 81, č. 3 (2021), č. článku 212. ISSN 1434-6044. E-ISSN 1434-6052
Institutional support: RVO:68378271
Keywords : DESY HERA Stor * H1 * numerical calculations: Monte Carlo
OECD category: Particles and field physics
Impact factor: 4.994, year: 2021
Method of publishing: Open access

Charged particle multiplicity distributions in positron-proton deep inelastic scattering at a centre-of-mass energy s=319sqrt{s}=319s ​=319 GeV are measured. The data are collected with the H1 detector at HERA corresponding to an integrated luminosity of 136 pb−1^{-1}−1. Charged particle multiplicities are measured as a function of photon virtuality Q2Q^2Q2, inelasticity y and pseudorapidity ηeta η in the laboratory and the hadronic centre-of-mass frames. Predictions from different Monte Carlo models are compared to the data. The first and second moments of the multiplicity distributions are determined and the KNO scaling behaviour is investigated. The multiplicity distributions as a function of Q2Q^2Q2 and the Bjorken variable xbjx_{mathrm{bj}}xbj​ are converted to the hadron entropy ShadronS_{mathrm{hadron}}Shadron​, and predictions from a quantum entanglement model are tested.
Permanent Link: http://hdl.handle.net/11104/0327771