Hadron formation in deep-inelastic positron scattering in a nuclear environment

A. Airapetian, N. Akopov, Z. Akopov, I. Akushevich, M. Amarian, J. Arrington, E. C. Aschenauer, H. Avakian, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, B. Bains, C. Baumgarten, M. Beckmann, S. Belostotski, S. Bernreuther, N. Bianchi, H. Böttcher, A. BorissovM. Bouwhuis, J. Brack, S. Brauksiepe, B. Braun, W. Brückner, A. Brüll, P. Budz, H. J. Bulten, G. P. Capitani, P. Carter, P. Chumney, E. Cisbani, G. R. Court, P. F. Dalpiaz, R. De Leo, L. De Nardo, E. De Sanctis, D. De Schepper, E. Devitsin, P. K.A. de Witt Huberts, P. Di Nezza, V. Djordjadze, M. Düren, A. Dvoredsky, G. Elbakian, J. Ely, A. Fantoni, A. Fechtchenko, L. Felawka, M. Ferro-Luzzi, K. Fiedler, B. W. Filippone, H. Fischer, B. Fox, J. Franz, S. Frullani, Y. Gärber, F. Garibaldi, E. Garutti, G. Gavrilov, V. Gharibyan, A. Golendukhin, G. Graw, O. Grebeniouk, P. W. Green, L. G. Greeniaus, A. Gute, W. Haeberli, M. Hartig, D. Hasch, D. Heesbeen, F. H. Heinsius, M. Henoch, R. Hertenberger, W. H.A. Hesselink, G. Hofman, Y. Holler, R. J. Holt, B. Hommez, G. Iarygin, M. Iodice, A. Izotov, H. E. Jackson, A. Jgoun, P. Jung, R. Kaiser, J. Kanesaka, E. Kinney, A. Kisselev, P. Kitching, H. Kobayashi, N. Koch, K. Königsmann, H. Kolster, V. Korotkov, E. Kotik, V. Kozlov, V. G. Krivokhijine, G. Kyle, L. Lagamba, A. Laziev, P. Lenisa, T. Lindemann, W. Lorenzon, N. C.R. Makins, J. W. Martin, H. Marukyan, F. Masoli, M. McAndrew, K. Mcllhany, R. D. McKeown, F. Meissner, F. Menden, A. Metz, N. Meyners, O. Mikloukho, C. A. Miller, R. Milner, V. Muccifora, R. Mussa, A. Nagaitsev, E. Nappi, Y. Naryshkin, A. Nass, K. Negodaeva, W. D. Nowak, K. Oganessyan, T. G. O'Neill, R. Openshaw, J. Ouyang, B. R. Owen, S. F. Pate, S. Potashov, D. H. Potterveld, G. Rakness, V. Rappoport, R. Redwine, D. Reggiani, A. R. Reolon, R. Ristinen, K. Rith, D. Robinson, A. Rostomyan, M. Ruh, D. Ryckbosch, Y. Sakemi, T. Sato, I. Savin, C. Scarlett, A. Schäfer, C. Schill, F. Schmidt, G. Schnell, K. P. Schüler, A. Schwind, J. Seibert, B. Seitz, T. A. Shibata, T. Shin, V. Shutov, M. C. Simani, A. Simon, K. Sinram, E. Steffens, J. J.M. Steijger, J. Stewart, U. Stösslein, K. Suetsugu, M. Sutter, S. Taroian, A. Terkulov, S. Tessarin, E. Thomas, B. Tipton, M. Tytgat, G. M. Urciuoli, J. F.J. van den Brand, G. van der Steenhoven, R. van de Vyver, J. J. van Hunen, M. C. Vetterli, V. Vikhrov, M. G. Vincter, J. Visser, E. Volk, C. Weiskopf, J. Wendland, J. Wilbert, T. Wise, S. Yen, S. Yoneyama, H. Zohrabian

Research output: Contribution to journalArticlepeer-review

131 Citations (Scopus)

Abstract

The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep-inelastic scattering has been studied by the HERMES experiment at DESY using a 27.5 GeV positron beam. The differential multiplicity of charged hadrons and identified charged pions from nitrogen relative to that from deuterium has been measured as a function of the virtual photon energy v and the fraction z of this energy transferred to the hadron. There are observed substantial reductions of the multiplicity ratio RhM at low v and at high z, both of which are well described by a gluon-bremsstrahlung model of hadronization. A significant difference of the v-dependence of RhM is found between positive and negative hadrons. This is interpreted in terms of a difference between the formation times of protons and pions, using a phenomenological model to describe the v-and z-dependence of RhM.

Original languageEnglish
Pages (from-to)479-486
Number of pages8
JournalEuropean Physical Journal C
Volume20
Issue number3
DOIs
Publication statusPublished - 2001 May
Externally publishedYes

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Fingerprint

Dive into the research topics of 'Hadron formation in deep-inelastic positron scattering in a nuclear environment'. Together they form a unique fingerprint.

Cite this