Measurement of the energy density as a function of pseudorapidity in proton–proton collisions at √s=13TeV
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Sirunyan, A. M.; Cabrillo Bartolomé, José Ibán; Calderón Tazón, Alicia; Chazín Quero, Bárbara; Duarte Campderros, Jorge; Fernández García, Marcos; Fernández Manteca, Pedro José; García Alonso, Andrea; García Ferrero, Juan; Gómez Gramuglio, Gervasio; López Virto, María Amparo; Marco de Lucas, Jesús; Martínez Rivero, Celso; Martínez Ruiz del Árbol, Pablo; Matorras Weinig, Francisco; Piedra Gómez, Jonatan; Prieëls, Cédric; Rodrigo Anoro, Teresa; Ruiz Jimeno, Alberto; [et al.]Fecha
2019-05Derechos
Attribution 4.0 International. © CERN for the benefit of the CMS collaboration 2019
Publicado en
Eur. Phys. J. C 79, 391 (2019)
Editorial
Springer New York LLC
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Resumen/Abstract
A measurement of the energy density in proton–proton collisions at a centre-of-mass energy of √s=13 TeV is presented. The data have been recorded with the CMS experiment at the LHC during low luminosity operations in 2015. The energy density is studied as a function of pseudorapidity in the ranges −6.6<η<−5.2 and 3.15<|η|<5.20. The results are compared with the predictions of several models. All the models considered suggest a different shape of the pseudorapidity dependence compared to that observed in the data. A comparison with LHC proton–proton collision data at √s=0.9 and 7TeV confirms the compatibility of the data with the hypothesis of limiting fragmentation.
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