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Investigation of the W and Q2 dependence of charged pion distributions in μp scattering

  • M. Arneodo
  • , A. Arvidson
  • , J. J. Aubert
  • , B. Badelek
  • , J. Beaufays
  • , C. P. Bee
  • , C. Benchouk
  • , G. Berghoff
  • , I. Bird
  • , D. Blum
  • , E. Böhm
  • , X. de Bouard
  • , F. W. Brasse
  • , H. Braun
  • , C. Broll
  • , S. Brown
  • , H. Brück
  • , H. Calen
  • , J. S. Chima
  • , J. Ciborowski
  • R. Clifft, G. Coignet, F. Combley, J. Coughlan, G. D'Agostini, S. Dahlgren, F. Dengler, I. Derado, T. Dreyer, J. Drees, M. Düren, V. Eckardt, A. Edwards, T. Ernst, G. Eszes, J. Favier, M. I. Ferrero, J. Figiel, W. Flauger, J. Foster, E. Gabathuler, J. Gajewski, R. Gamet, J. Gayler, N. Geddes, P. Giubellino, P. Grafström, F. Grard, J. Haas, E. Hagberg, F. J. Hasert, P. Hayman, P. Heusse, C. Hoppe, M. Jaffré, A. Jacholkowska, F. Janata, G. Jancso, A. S. Johnson, E. M. Kabuss, G. Kellner, V. Korbel, J. Krüger, S. Kullander, U. Landgraf, D. Lanske, J. Loken, K. Long, M. Maire, P. Malecki, A. Manz, S. Maselli, W. Mohr, F. Montanet, H. E. Montgomery, E. Nagy, J. Nassalski, P. R. Norton, F. G. Oakham, A. M. Osborne, C. Pascaud, B. Pawlik, P. Payre, C. Peroni, H. Pessard, J. Pettingale, B. Pietrzyk, B. Pönsgen, M. Pötsch, P. Renton, P. Ribarics, K. Rith, E. Rondio, M. Scheer, A. Schlagböhmer, H. Schiemann, N. Schmitz, M. Schneegans, M. Scholz, T. Schröder, M. Schouten, K. Schultze, T. Sloan, H. E. Stier, M. Studt, G. N. Taylor, J. M. Thénard, J. C. Thompson, A. de la Torre, J. Toth, L. Urban, W. Wallucks, M. Whalley, S. Wheeler, W. S.C. Williams, S. J. Wimpenny, R. Windmolders, G. Wolf

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

The W and Q2 dependence of the fragmentation functions and of the average multiplicity of charged pions is investigated, using data from the NA9 experiment at the CERN SPS on muon-proton scattering at 280 GeV. A significant increase of pion production with increasing W is observed at fixed Q2, leading to a rise of the average charged pion multiplicity, linear in ln W2, and of the pion fragmentation function in the central region, i.e. at small |xF|. This increase can be understood from the kinematic widening of the cms rapidity range proportional to ln W2 and the observed W independent height of the rapidity distribution. At fixed W, a rise of the average charged pion multiplicity with Q2 is observed. This rise appears to be weaker than that observed for all charged hadrons implying a stronger rise with Q2 for kaons and protons.

Lingua originaleInglese
pagine (da-a)1-12
Numero di pagine12
RivistaZeitschrift fur Physik C-Particles and Fields
Volume31
Numero di pubblicazione1
DOI
Stato di pubblicazionePubblicato - mar 1986
Pubblicato esternamente

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