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Properties of HERA events from DIS on pions in the proton

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Zeitschrift für Physik C Particles and Fields

Abstract

Recently the concept of the pion cloud in the nucleon turned out to be successful in understanding the Gottfried sum rule violation observed by the New Muon Collaboration and the Drell-Yan asymmetry measured in NA51 at CERN. We propose a further possibility to test this concept at HERA through the analysis of the structure of deep inelastic scattering (DIS) events induced by pion-exchange. Momentum and energy distributions of outgoing nucleons as well as rapidity and multiplicity distributions are investigated using Monte Carlo simulations. Most observables cannot distinguish this process from ordinary DIS, but in the energy distribution of final neutrons we find a significantly different prediction from the pion cloud model. Forward neutron calorimeters will be essential to test the concept of pions in the nucleon.

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References

  1. ZEUS Collaboration, M.Derrick et al., Phys.Lett.B315 (1993) 481; ZEUS Collaboration, M.Derrick et al., Phys.Lett.B332 (1994) 228; ZEUS Collaboration, M.Derrick et al., Z.Phys.C68 (1995) 569.

    ADS  Google Scholar 

  2. H1 Collaboration, T.Ahmed et al., Nucl.Phys.B429 (1994) 477; H1 Collaboration, T.Ahmed et al., Phys.Lett.B348 (1995) 681.

    ADS  Google Scholar 

  3. G. Ingelman, Lepto 6.3, unpublished manual, see also G.Ingelman, LEPTO 6.1 — The Lund Monte Carlo for deep inelastic lepton—nucleon scattering, Proc. of the DESY Workshop’ Physics at HERA. Ed. W.Buchmüller and G.Ingelman. Hamburg (1991) 1366

  4. B. Andersson, G. Gustafson, G. Ingelman and T. Sjöstrand, Phys.Rep. 97 (1983) 31

    Article  ADS  Google Scholar 

  5. K. Werner and P. Koch, Z.Phys. C47 (1990) 215,255.

    Google Scholar 

  6. W. Buchmüller, A. Hebecker, Phys. Lett. B355 (1995) 573 A. Edin, G. Ingelman, J. Rathsman, Phys. Lett. B366 (1996) 371

    Article  ADS  Google Scholar 

  7. EMC Collaboration, J. Ashman et al., Nucl. Phys. B328 (1989) 1. SMC Collaboration, D.Adams et al., Phys. Lett. B329 (1994) 399.

    ADS  Google Scholar 

  8. NMC Collaboration, P. Amaudruz et al., Phys.Rev.Lett. 66 (1991) 2712.

    Article  Google Scholar 

  9. A.D. Martin, W.J. Stirling and R.G. Roberts, Phys.Rev. D50 (1994) 6734.

    ADS  Google Scholar 

  10. A. Baldit et al., Phys.Lett. B332 (1994) 244.

    Article  ADS  Google Scholar 

  11. E.M. Henley and G.A. Miller, Phys.Lett. B251 (1990) 453; S.Kumano, Phys.Rev. D43 (1991) 59; A.Signal, A.W.Schreiber and A.W.Thomas, Mod.Phys.Lett. A6 (1991) 271; W-Y.P.Hwang, J.Speth and G.E.Brown, Z.Phys.A339 (1991) 383; V.R.Zoller, Z.Phys. C53 (1992) 443; A.Szczurek and J.Speth, Nucl.Phys. A555 (1993) 249; A.Szczurek, H.Holtmann, Acta Phys.Pol. B24 (1993) 1833; A.Szczurek, J.Speth and G.T.Garvey, Nucl.Phys. A570 (1994) 765.

    Article  ADS  Google Scholar 

  12. M. Lusignoli and Y. Srivastava, Nucl.Phys. B138 (1978) 151; M.Lusignoli, P.Pistili and F.Rapuano, Nucl.Phys. B155 (1979) 394; C.L.Korpa, A.E.L.Dieperink and O.Scholten, Z.Phys. A343 (1992) 461; G.D.Bosveld, A.E.L.Dieperink and O.Scholten, Phys.Rev. C45 (1992) 2616.

    Article  ADS  Google Scholar 

  13. A. Szczurek, G.D.Bosveld, A.E.L.Dieperink, Groningen preprint KVI-1096 (1994), Nucl.Phys. A595 (1995) 307.

  14. G.D. Bosveld, A.E.L. Dieperink and A.G. Tenner, Phys.Rev. C49 (1994) 2379.

    ADS  Google Scholar 

  15. G.Levman and K.Furutani, Virtual pion scattering at HERA, ZEUS note 92-107 (1992) G.Levman and K.Furutani, A forward Neutron Calorimeter for ZEUS, DESY-PRC 93-08 (1993).

  16. H. Holtmann, G. Levman, N.N. Nikolaev, A. Szczurek and J. Speth, Phys.Lett. B338 (1994) 363.

    Article  ADS  Google Scholar 

  17. S. Bhadra et al., Nucl.Instr. and Meth. A354(1995)479.

    Article  ADS  Google Scholar 

  18. The ZEUS detector, status report, 1993, DESY.

  19. H.Holtmann, A.Szczurek and J.Speth, Jülich preprint KFA-IKP(TH)- 25 (1994), Nucl.Phys. A569 (1996) 631.

  20. R.G.E. Timmermans, Th.A. Rijken and J.J. de Swart, Phys.Lett. B257 (1991) 227.

    Article  ADS  Google Scholar 

  21. B. Holzenkamp, K. Holinde and J. Speth, Nucl.Phys. A500 (1989) 485.

    Article  ADS  Google Scholar 

  22. H.Holtmann, A.Szczurek and J.Speth, Jülich preprint KFA-IKP(TH)-33 (1993)

  23. M.V. Terent’ev, Sov.J.Nucl.Phys. 24 (1976) 106; H.J.Weber, Ann.Phys.177 (1987) 38; C.-R. Ji, P.L.Chung and S.R.Cotanch, Phys.Rev.D45 (1992) 4214; T.Huang, B.-Q.Ma and Q.-X.Shen, Phys.Rev.D49 (1994) 1490.

    Google Scholar 

  24. J.D. Sullivan, Phys.Rev. D5 (1972) 1732.

    ADS  Google Scholar 

  25. H.Holtmann, N.N.Nikolaev, J.Speth and A.Szczurek, Jülich preprint KFA-IKP(TH)-14 (1994), Z.Phys.A353 (1996) 411. A.Szczurek, M.Ericson, H.Holtmann and J.Speth, Jülich preprint KFAIKP( TH)-05 (1995), Nucl.Phys.A596 (1996) 397.

  26. P. Bruni, G. Ingelman, Pompyt 2.3 — A Monte Carlo to simulate diffractive hard scattering processes, unpublished program manual

  27. T. Sjöstrand, Pythia 5.7 and Jetset 7.4, CERN-TH.7112/93 and Comp. Phys. Comm. 82 (1994) 74

    Google Scholar 

  28. M. Glück, E. Reya and A. Vogt, Z.Phys. C53 (1992) 651.

    ADS  Google Scholar 

  29. J. Badier et al., Z.Phys. C18 (1983) 281.

    ADS  Google Scholar 

  30. P.J. Sutton, A.D. Martin, R.G. Roberts and W.J. Stirling, Phys.Rev. D45 (1992) 2349.

    ADS  Google Scholar 

  31. A.D. Martin, R.G. Roberts and W.J. Stirling, Phys.Lett. B306 (1993) 145.

    Article  ADS  Google Scholar 

  32. H.Holtmann, N.N.Nikolaev, A.Szczurek, J.Speth and B.G.Zakharov, Jülich preprint KFA-IKP(TH)-06 (1995), Z.Phys. C69 (1996) 297.

  33. G. Ingelman and P. Schlein, Phys.Lett. 152B (1985) 256.

    Article  ADS  Google Scholar 

  34. E.L. Berger, J.C. Collins, D.E. Soper and G. Sterman, Nucl.Phys. B286 (1987) 704.

    Article  ADS  Google Scholar 

  35. M. Birkič, Ph.D. dissertation, DESY internal report, DESY F35D-95-x10, 1995.

  36. M.Przybycién and A.Szczurek, work in progress.

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Authors and Affiliations

  1. Faculty of Physics and Nuclear Techniques, Academy of Mining and Metallurgy, Al. Mickiewicza 30, PL-30-059, Cracow, Poland

    M. Przybycień

  2. Institute of Nuclear Physics, ul.Radzikowskiego 152, PL-31-342, Cracow, Poland

    A. Szczurek

  3. Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22603, Hamburg, FRG

    G. Ingelman

  4. Dept. of Radiation Sciences, Uppsala University, Box 535, S-751 21, Uppsala, Sweden

    G. Ingelman

Authors
  1. M. Przybycień
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  2. A. Szczurek
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  3. G. Ingelman
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Przybycień, M., Szczurek, A. & Ingelman, G. Properties of HERA events from DIS on pions in the proton. Z Phys C - Particles and Fields 74, 509–515 (1997). https://doi.org/10.1007/s002880050413

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  • DOI: https://doi.org/10.1007/s002880050413

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