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Measurement of the forward charged particle pseudorapidity density in pp collisions at $$\sqrt{s} = 8$$ s = 8 TeV using a displaced interaction point

2015; Springer Science+Business Media; Volume: 75; Issue: 3 Linguagem: Inglês

10.1140/epjc/s10052-015-3343-7

1434-6052

G. Antchev, P. Aspell, I. Atanassov, V. Avati, J. Baechler, V. Berardi, M. Berretti, E. Bossini, U. Bottigli, M. Bozzo, E. Brücken, A. Buzzo, F. Cafagna, M.G. Catanesi, C. E. Covault, M. Csanád, T. Csörgő, M. Deile, M. Doubek, K. Eggert, V. Eremin, F. Ferro, A. Fiergolski, F. García, V. Georgiev, S. Gianì, L. Grzanka, J. Hammerbauer, J. Heino, T. E. Hilden, A. Karev, J. Kašpar, J. Kopal, V. Kundrát, S. Lami, G. Latino, G. Latino, T. Leszko, É. Lippmaa, J. Lippmaa, M. V. Lokajíček, L. Losurdo, M. Lo Vetere, F. Lucas Rodríguez, M. Macrı́, T. Mäki, A. Mercadante, N. Minafra, S. Minutoli, F. Nemes, H. Niewiadomski, E. Oliveri, F. Oljemark, R. Orava, M. Oriunno, K. Österberg, P. Palazzi, Z. Peroutka, J Procházka, M. Quinto, E. Radermacher, E. Radicioni, F. Ravotti, E. Robutti, L. Ropelewski, G. Ruggiero, H. Saarikko, A. Scribano, J. Smajek, W. Snoeys, T. Sodzawiczny, J. Sziklai, C. Taylor, N. Turini, V. Vacek, J. Welti, J. Whitmore, P. Wyszkowski, Krzysztof Zieliński,

Quantum Chromodynamics and Particle Interactions

The pseudorapidity density of charged particles dN $$_{ ch }$$ /d $$\eta $$ is measured by the TOTEM experiment in proton–proton collisions at $$\sqrt{s} = 8$$ TeV within the range $$3.9<\eta <4.7$$ and $$-6.95<\eta 0$$ MeV/c, produced in inelastic interactions with at least one charged particle in $$-7<\eta <-6$$ or $$3.7<\eta <4.8$$ . The dN $$_{ ch }$$ /d $$\eta $$ has been found to decrease with $$|\eta |$$ , from 5.11 $$\pm $$ 0.73 at $$\eta =3.95$$ to 1.81 $$\pm $$ 0.56 at $$\eta =-$$ 6.925. Several Monte Carlo generators are compared to the data and are found to be within the systematic uncertainty of the measurement.