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

Andreev, V.; Baghdasaryan, A.; Baty, A.; Begzsuren, K.; Belousov, A.; Bolz, A.; Boudry, V.; Brandt, G.; Britzger, D.; Buniatyan, A.; Egli, S.; Horisberger, R.; Ozerov, D.; Zomer, F.

doi:10.1140/epjc/s10052-021-08896-1

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

Andreev V, Baghdasaryan A, Baty A, Begzsuren K, Belousov A, Bolz A, Boudry V, Brandt G, Britzger D, Buniatyan A, Egli S, Horisberger R, Ozerov D, Zomer F, et al.

Citation

Andreev, V., Baghdasaryan, A., Baty, A., Begzsuren, K., Belousov, A., Bolz, A., … Zomer, F. (2021). Measurement of charged particle multiplicity distributions in DIS at HERA and its implication to entanglement entropy of partons. European Physical Journal C: Particles and Fields, 81(3), 212 (46 pp.). https://doi.org/10.1140/epjc/s10052-021-08896-1

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:37887

Charged particle multiplicity distributions in positron-proton deep inelastic scattering at a centre-of-mass energy √s = 319 GeV are measured. The data are collected with the H1 detector at HERA corresponding to an integrated luminosity of 136 pb^-1. Charged particle multiplicities are measured as a function of photon virtuality Q², inelasticity y and pseudorapidity 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 Q² and the Bjorken variable x_bj are converted to the hadron entropy S_hadron, and predictions from a quantum entanglement model are tested.