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1988•Europhysics Letters (EPL)Open access

Rapidity and Multiplicity Dependence of Transverse Momentum Spectra in pp Collisions at ISR Energies

A. Breakstone, R. Campanini, H. B. Crawley, M. Cuffiani, G. M. Dallavalle, M.M. Deninno, K. Doroba, D. Drijard, F. Fabbri, A. Firestone, Hubertus Fischer, H. Flöge, H. Frehse, W. Geist, L. Geßwein, G. Giacomelli, R. Gokieli, M. Gorbics, M. Górski, P. Hanke, M. Heiden, W. Herr, D. Isenhower, E.-E. Kluge, J. Lamsa, T. Lohse, R. Mankel, L. Marradi, W. T. Meyer, T. Nakada, M. Panter, A. Putzer, K. Rauschnabel, B. Rensch, F. Rimondi, M. Schmelling, Gian Piero Siroli, R. Sosnowski, M. Szczekowski, O. Ullaland, D. Wegener, M. Wunsch, R. Yeung

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Abstract

In a high-statistics experiment at the CERN-ISR we analyze the variation of the average transverse momentum in fixed rapidity intervals as a function of the multiplicity density of charged particles produced in proton-proton collisions at √ s = 31, 44 and 62 GeV. The average transverse momentum depends on both rapidity y and charged multiplicity density, ρ = Δ n /Δ y . The dependence on ρ changes gradually from an increase at low y , constancy at intermediate y and decrease at large y .

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In a high-statistics experiment at the CERN-ISR we analyze the variation of the average transverse momentum in fixed rapidity intervals as a function of the multiplicity density of charged particles produced in proton-proton collisions at √ s = 31, 44 and 62 GeV. The average transverse momentum depends on both rapidity y and charged multiplicity density, ρ = Δ n /Δ y . The dependence on ρ changes gradually from an increase at low y , constancy at intermediate y and decrease at large y .

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Available abstract

In a high-statistics experiment at the CERN-ISR we analyze the variation of the average transverse momentum in fixed rapidity intervals as a function of the multiplicity density of charged particles produced in proton-proton collisions at √ s = 31, 44 and 62 GeV. The average transverse momentum depends on both rapidity y and charged multiplicity density, ρ = Δ n /Δ y . The dependence on ρ changes gradually from an increase at low y , constancy at intermediate y and decrease at large y .

Key concepts: Rapidity, Multiplicity (mathematics), Physics, Large Hadron Collider, Nuclear physics, Spectral line, Transverse plane, Charged particle

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