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

Journal Article · 02 March 2021 · European Physical Journal. C, Particles and Fields

DOI: https://doi.org/10.1140/epjc/s10052-021-08896-1 · OSTI ID:1805274

Andreev, V.; Baghdasaryan, A.; Baty, A.; Begzsuren, K.; Belousov, A.; Bolz, A.; Boudry, V.; Brandt, G.; Britzger, D.; Buniatyan, A.; Bystritskaya, L.; Campbell, A. J.; Avila, K. Cantun; Cerny, K.; Chekelian, V.; Chen, Z.; Contreras, J. G.; Cvach, J.; Dainton, J. B.; Daum, K. ; Deshpande, A.; Diaconu, C.; Eckerlin, G.; Egli, S.; Elsen, E.; Favart, L.; Fedotov, A.; Feltesse, J.; Fleischer, M.; Fomenko, A.; Gal, C.; Gayler, J.; Goerlich, L.; Gogitidze, N.; Gouzevitch, M.; Grab, C.; Grebenyuk, A.; Greenshaw, T.; Grindhammer, G.; Haidt, D.; Henderson, R. W.; Hladkỳ, J.; Hoffmann, D.; Horisberger, R.; Hreus, T.; Huber, F.; Jacquet, M.; Janssen, X.; Jung, A. W.; Jung, H.; Kapichine, M.; Katzy, J.; Kiesling, C.; Klein, M.; Kleinwort, C.; Kogler, R.; Kostka, P.; Kretzschmar, J.; Krücker, D.; Krüger, K.; Landon, M. J.; Lange, W.; Laycock, P.; Lebedev, A.; Levonian, S.; Lipka, K.; List, B.; List, J.; Li, W.; Lobodzinski, B.; Malinovski, E.; Martyn, H. -U.; Maxfield, S. J.; Mehta, A.; Meyer, A. B.; Meyer, H.; Meyer, J.; Mikocki, S.; Mondal, M. M.; Morozov, A.; Müller, K.; Naumann, Th; Newman, P. R.; Niebuhr, C.; Nowak, G.; Olsson, J. E.; Ozerov, D.; Park, S.; Pascaud, C.; Patel, G. D.; Perez, E.; Petrukhin, A.; Picuric, I.; Pitzl, D.; Polifka, R.; Radescu, V.; Raicevic, N.; Ravdandorj, T.; Reimer, P.; Rizvi, E.; Robmann, P.; Roosen, R.; Rostovtsev, A.; Rotaru, M.; Sankey, D. C.; Sauter, M.; Sauvan, E.; Schmitt, S.; Schmookler, B. A.; Schoeffel, L.; Schöning, A.; Sefkow, F.; Shushkevich, S.; Soloviev, Y.; Sopicki, P.; South, D.; Spaskov, V.; Specka, A.; Steder, M.; Stella, B.; Straumann, U.; Sykora, T.; Thompson, P. D.; Traynor, D.; Truöl, P.; Tseepeldorj, B.; Tu, Z.; Ullrich, T.; Valkárová, A.; Vallée, C.; Mechelen, P. Van; Wegener, D.; Wünsch, E.; Žáček, J.; Zhang, J.; Zhang, Z.; Žlebčík, R.; Zohrabyan, H.; Zomer, F.

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.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• Contributing Organization: H1 Collaboration
• Grant/Contract Number: SC0012704
• OSTI ID: 1805274
• Report Number(s): BNL--221719-2021-JAAM
• Journal Information: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 3 Vol. 81; ISSN 1434-6044
• Publisher: SpringerCopyright Statement
• Country of Publication: United States
• Language: English