2019 Impact factor 4.389
Particles and Fields

Eur. Phys. J. C 10, 605-627
DOI 10.1007/s100529900145

Measurement of charged particle production from 450 GeV/c protons on beryllium

The NA56/SPY Collaboration

G. Ambrosini2 - R. Arsenescu2 - K. Bernier7 - C. Biino5 - M. Bonesini9 - W. Bonivento9 - K. Borer2 - G. Brooijmans7 - M.G. Catanesi1 - G. Collazuol11 - D. Daniels3 - F. Dittus5 - K. Elsener5 - A. Godley13 - A. Grant5 - G. Gregoire7 - A. Guglielmi11 - S. Kabana2 - R. Klingenberg2 - G. Lehmann9 - T. Lindén6 - L. Linssen5 - A. Marchionni4 - S.R. Mishra3 - L. Moffitt8 - U. Moser2 - V. Palladino10 - F. Pietropaolo11 - K. Pretzl2 - A. Pullia9 - E. Radicioni1 - S. Ragazzi9 - J. Schacher2 - F. Sergiampietri12 - F.J.P. Soler13 - F. Stoffel2 - T. Tabarelli de Fatis9 - F. Terranova9 - S.N. Tovey8 - E. Tsesmelis5 - M. Weber2

1 INFN, Sezione di Bari, Bari, Italy.
2 Laboratorium für Hochenenergiephysik, Universität Bern, Bern, Switzerland
3 Department of Physics, Harvard University, Cambridge, MA, USA
4 INFN, Sezione di Firenze, Firenze, Italy
5 CERN, Geneva, Switzerland
6 Department of Physics, University of Helsinki, Helsinki, Finland
7 Université Catholique de Louvain, Louvain, Belgium
8 School of Physics, University of Melbourne, Melbourne, Australia
9 Dipartimento di Fisica, Università di Milano and INFN, Milano, Italy
10 Dipartimento di Scienze Fisiche, Università di Napoli and INFN, Napoli, Italy
11 Dipartimento di Fisica, Università di Padova and INFN, Padova, Italy
12 INFN, Sezione di Pisa, Pisa, Italy
22 School of Physics, University of Sydney, Sydney, Australia

Received: 12 January 1999 / Published online: 8 September 1999

Abstract
This paper presents the results on charged particle yields and production ratios as measured by the NA56/SPY experiment for 450 GeV/c proton interactions on beryllium targets. The data cover a secondary momentum range from 7 GeV/c to 135 GeV/c and pT values up to 600 MeV/c. An experimental accuracy on the measured yields in the range from $5 \%$ to $10 \%$, depending on the beam momentum, and around $3 \%$ for the particle production ratios has been achieved. These measurements are relevant for a precise evaluation of fluxes and composition of neutrino beams at accelerators. Results on the target thickness and shape dependence are also reported. Inclusive invariant cross sections in the forward direction have been derived.


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