Advertisement

QCD in e+e Annihilation: Theory and Practice

Abstract

The promise of e+e annihilation as an ideal laboratory to test Quantum Chromodynamics, QCD, has been the dominating theme in elementary particle physics during the last several years. In this paper an attempt is made to partially survey the subject in the deep perturbative region in e+e annihilation where theoretical ambiguities are minimal. The topics discussed include a review of the renormalization group methods relevant for e+e annihilation, total hadronic cross section, jets and large-pT phenomena, non-perturbative quark and gluon fragmentation effects and analysis of the jet distributions measured at DORIS, SPEAR and PETRA. My intention is to review realistic tests of QCD in e+e annihilation --- as opposed to the ultimate tests, which abound in the literature!

Keywords

Invariant Mass Heavy Quark Fragmentation Function Power Correction Gluon Fragmentation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    See, for example, the selected works of Mao Tse Tung, unrevised version, Foreign Language Press, Peking (1967).Google Scholar
  2. 2.
    H.David Politzer, ‘Still QCD-ing’, Lectures presented at the Eighth Hawaii Topical Conference, Caltech-68–745 (1979).Google Scholar
  3. 3.
    S.L.Glashow and S.Weinberg, Phys. Rev., D15, 1958 (1977).CrossRefGoogle Scholar
  4. 4.
    See, for example, H.D.Politzer, Phys. Rep., 14C, 129 (1974); W.Marciano and H.Pagels, Phys. Reports, 36C, 139 (1978).Google Scholar
  5. 5.
    T.Appelquist and H.Georgi, Phys. Rev., D8, 4000 (1973);Google Scholar
  6. 5a.
    A.Zee, Phys. Rev., D8, 4038 (1973).Google Scholar
  7. 6.
    E.C.Poggio, H.R.Quinn and S.Weinberg, Phys. Rev.D13, 1958 (1976);Google Scholar
  8. R.Shankar, Phys. Rev., D15 755 (1978).Google Scholar
  9. 7.
    M.Dine and J.Sapirstein, Phys. Rev. Lett., 43, 668 (1979);CrossRefGoogle Scholar
  10. K.G.Chetyrkin, A.L.Kataev and F.V.Tkachov, Phys. Lett., 85B, 277 (1979);Google Scholar
  11. W.Celmaster and R.J.Gonsalves, Phys. Rev. Lett., 44, 560 (1980).CrossRefGoogle Scholar
  12. 8.
    R.M.Barnett, M.Dine and L.McLerran, SLAC-PUB-2475 (1980).Google Scholar
  13. 9.
    G.Sterman and S.Weinberg, Phys. Rev. Lett., 39 1436(1977).Google Scholar
  14. 10.
    T.Kinoshita, J. Math. Phys., 3, 650 (1962);CrossRefGoogle Scholar
  15. T.D.Lee and M.Nauenberg, Phys. Rev., 133, B1549 (1964).CrossRefGoogle Scholar
  16. 11.
    J.Ellis, M.K.Gaillard and G.G.Ross, Nucl. Phys., B111253 (1976).Google Scholar
  17. 12.
    An incomplete list of references is:J.Ellis et al., (Ref. 10);Google Scholar
  18. A.De Rujula, J.Ellis, E.G.Floratos and M.K.Gaillard, Nucl. Phys., B138, 387 (1978);CrossRefGoogle Scholar
  19. G.Kramer, G.Schierholz and J.Willrodt, Phys. Lett., 78B, 249 (1978), Erratum 80B, 433 (1979);Google Scholar
  20. P.Hoyer, P.Osland, H.G.Sander, T.F.Walsh and P.M.Zerwas, Nucl. Phys., B161, 349 (1979).CrossRefGoogle Scholar
  21. 13.
    A.Ali, J.G.Körner, Z.Kunszt, J.Willrodt, G.Kramer, G.Schierholz and E.Pietarinen, Phys. Lett., 82B, 285 (1979);Google Scholar
  22. Nucl. Phys., B167, 454 (1980); K.Gaemers and J.Vermaseren, Z.f. Physik (to be published).Google Scholar
  23. 14.
    See, for example, E.Farhi, Phys. Rev. Lett., 39 1436 (19–7);Google Scholar
  24. A. De Rujula et al., in Ref. 11; G.Fox and S.Wolfram, Nucl. Phys., B149, 413 (1979);Google Scholar
  25. C.L.Basham, L.S.Brown, S.D.Ellis, S.T.Love, Phys. Rev., D17, 2298 (1978).Google Scholar
  26. 15.
    A.Ali, E.Pietarinen, G.Kramer and J.Willrodt, Phys. Lett., 93B, 155 (1980) and A.Ali, E.Pietarinen and J.Willrodt, DESY Report T-01/1980.Google Scholar
  27. 16.
    R.D.Field and R.P.Feynman, Nucl. Phys., B136, 1 (1978).CrossRefGoogle Scholar
  28. 17.
    N.Cabibbo, L.Maiani, Phys. Lett., 79B, 109 (1978); M.Suzuki, Nucl. Phys., B145, 420 (1978);Google Scholar
  29. A.Ali and E.Pietarinen, Nucl. Phys., B154, 519 (1979);CrossRefGoogle Scholar
  30. N.Cabibbo, G.Corbo, L.Maiani, Nucl. Phys., B155 93 (1979);Google Scholar
  31. G.Altarelli, G.Curci, G.Martinelli and S.Petrarca, CERN Report TH-2952 (1980).Google Scholar
  32. 18.
    R.K.Ellis, D.A.Ross and A.E.Terrano,Caltech Report 68–785 (1980); K.Fabricius,I,Schmitt,G.Schierholz and G.Kramer, DESY Report 80 /79 (1980);Google Scholar
  33. J.Vermaseren K.Gaemers and S.Oldham, CERN Report TH-3002(1980).Google Scholar
  34. 19.
    W.Greenberg was the first to suggest the idea of color as a physical degree of freedom, 0.W.Greenberg, Phys. Rev. Lett., 13, 598 (1964).Google Scholar
  35. 20.
    H.Fritzsch, M.Gell-Mann and H.Leutwyler, Phys. Lett., 47B, 365 (1973);Google Scholar
  36. S.Weinberg, Phys. Rev. Lett., 31, 494 (1973);CrossRefGoogle Scholar
  37. D.J.Gross and F.Wilczek, Phys. Rev., D8, 3633 (1973).Google Scholar
  38. 21.
    C.N.Yang and R.L.Mills, Phys. Rev., 96, 191 (1954).CrossRefGoogle Scholar
  39. 22.
    This name was invented by M.Gell-Mann.Google Scholar
  40. 23.
    See, for example, J.D.Bjorken and S.D.Drell, Relativistic Quantum Fields (McGraw Hill, Publishers).Google Scholar
  41. 24.
    These are reviewed in E.Abers and B.W.Lee, Physics Reports 9C, 1 (1973) and S.Weinberg, Rev. Mod. Phys., 46, 255 (1974).CrossRefGoogle Scholar
  42. 25.
    See, for example, N.N.Bogoliubov and D.V.Shirkov, Introduction to the Theory of Quantized Fields (Interscience, New York, 1959) ch. 8.Google Scholar
  43. 26.
    G. ‘t Hooft and M.Veltman, Nucl. Phys., 44B, C.G.Bollini and J.J.Giambiagi, Nuovo Cimento (1972);Google Scholar
  44. J.Ashmore, Nuovo Cim. Lett., 4, 289 (1972);Google Scholar
  45. G.Cicuta and E.Montaldi, Nuovo Cim. Lett., 4, 329 (1972).CrossRefGoogle Scholar
  46. 27.
    See, for example, A.J.Buras, Rev. Mod. Physics, 52, 199 (1980) and references quoted therein.Google Scholar
  47. 28.
    W.Celmaster and R.J.Gonsalves, Phys. Rev., D15 1420 (1979).Google Scholar
  48. 29.
    G. ‘t Hooft, Nucl. Phys., B61, 455 (1973).CrossRefGoogle Scholar
  49. 30.
    E.Stückelberg and A.Peterman, Helv. Phys. Acta, 26, 499 (1953);Google Scholar
  50. M.Gell-Mann and F.Low, Phys. Rev., 95, 1300 (1954);CrossRefGoogle Scholar
  51. N.N.Bogoliubov and D.V.Shirkov (Ref. 25). K.Wilson, Phys. Rev., 179 1499 (1969).Google Scholar
  52. 31.
    C.G.Callan, Phys. Rev., D2, 1541 (1970); K.Symanzik, Commun. Math. Phys., 18, 227 (1970).Google Scholar
  53. 32.
    The discussion here follows closely W.Marciano and H.Pagels, Phys. Reports, 36C, 136 (1978).Google Scholar
  54. 33.
    K.Symanzik, Nuovo Cim. Lett., 6, 77 (1973).CrossRefGoogle Scholar
  55. 34.
    H.D.Politzer, Phys. Rev. Lett., 30, 1346 (1973); D.J.Gross and F.Wilczek, Phys. Rev. Lett., 30, 1343(1973); G. ‘t Hooft (unpublished).Google Scholar
  56. 35.
    J.Ellis and C.T.Sachrajda, Proceedings of the 1979 Cargése Summer Institute on Quarks and Leptons (also available as CERN Report TH-2782-CERN). This paper reviews work done on Deep Inelastic Scattering and other hard scattering processes including exclusive processes.Google Scholar
  57. 36.
    N.Cabibbo and R.Gatto, Phys. Rev., D5, 1577 (1961).CrossRefGoogle Scholar
  58. 37.
    G.Källen, Helv. Phys. Acta, 25, 417 (1952).Google Scholar
  59. 38.
    R.P.Feynman, Phys. Rev. Lett., 23, 1415 (1969);CrossRefGoogle Scholar
  60. J.D.Bjorken and E.A.Paschos, Phys. Rev., 178, 1975 (1969);Google Scholar
  61. R.P.Feynman, Photon-hadron interactions (Benjamin, N.Y. 1972 ).Google Scholar
  62. 39.
    J.D.Bjorken, Phys. Rev., 148, 1467 (1966).CrossRefGoogle Scholar
  63. 40.
    R.Jackiw and G.Preparata, Phys. Rev. Lett., 22, 975(1969). See also N.Cabibbo, G.Parisi and M.Testa, Nuovo Cim. Lett., 4, 35 (1970).CrossRefGoogle Scholar
  64. 41.
    S.L.Adler, Phys. Rev., D10, 3714 (1973).Google Scholar
  65. 42.
    A.Zee, Phys. Rev., D8, 4038 (1973) and T.Appelquist and H.Georgi, Phys. Rev., D8, 4000 (1973).Google Scholar
  66. 43.
    This point is discussed in any text book on renormalization theory. See for example reference 25.Google Scholar
  67. 44.
    R.Jost and J.M.Luttinger, Helv, Phys. Acta, 23, 201 (1950).Google Scholar
  68. 45.
    J.Schwinger, Particles, Sources and Fields, vol. II (Addison-Wesley, New York 1973) chap. 5–4. See also G.Källen and A.Sabry, K.Dansk. Vidensk. Slesk. Mat.-Fys. Medd., 29, No. 17 (1955).Google Scholar
  69. 46.
    E.C.Poggio, H.R.Quinn and S.Weinberg, Phys. Rev., D131958 (1976).Google Scholar
  70. 47.
    A.De Rujula and H.Georgi, Phys. Rev., D13, 1296 (1976)Google Scholar
  71. 48.
    T.W.Appelquist and H.D.Politzer, Phys. Rev. Lett., 34, 43 (1975); Phys. Rev., D12, 1404 (1975).Google Scholar
  72. 49.
    W.E.Caswell, Phys. Rev. Lett., 33, 244 (1974);CrossRefGoogle Scholar
  73. D.R.T.Jones, Nucl. Phys., B75, 531 (1974).CrossRefGoogle Scholar
  74. 50.
    W.A.Bardeen, A.J.Buras, D.W.Duke and T.Muta, Phys. Rev., D18, 3998 (1978).Google Scholar
  75. 51.
    M.A.Shifman, A.I.Vainshtein and V.I.Zakharov, Nucl. Phys., B147, 385, 448, 519 (1979).CrossRefGoogle Scholar
  76. 52.
    K.Wilson in Ref. 30.Google Scholar
  77. 53.
    M.Gell-Mann, R.Oakes and B.Renner, Phys. Rev., 175, 2195 (1968);CrossRefGoogle Scholar
  78. S.Weinberg, Harvard Preprints HUTP-77/A057, HUTP-77/A061 (1977).Google Scholar
  79. 54.
    A.Dashen, Phys. Rev., 183, 1245 (1969).CrossRefGoogle Scholar
  80. 55.
    H.Leutwyler, Phys. Lett., 48B, 45 (1974);CrossRefGoogle Scholar
  81. Nucl. Phys., B76, 413 (1974).Google Scholar
  82. 56.
    J.Kripfganz, CERN Report TH-3020 (1981).Google Scholar
  83. 57.
    A.Vainshtain, V.Zakharov and M.Shifman, Pisma ZhETF (USSR), 27, 60 (1978).Google Scholar
  84. 58.
    S.Eitelman, L.Kurdadze and A.Vainshtain, Phys. Lett., 82B, 278 (1979).Google Scholar
  85. 59.
    R.M.Barnett, M.Dine and L.McLerran, SLAC-PUB-2475 (1980).Google Scholar
  86. 60.
    For details of analysis and references to the data used see Ref. 59.Google Scholar
  87. 61.
    R.F.Schwitters et al., Phys. Rev. Lett., 35, 1320 (1975);CrossRefGoogle Scholar
  88. G.G.Hanson et al., Phys. Rev. Lett., 35, 1609 (1975);CrossRefGoogle Scholar
  89. G.G.Hanson, Proceedings of the 13th Recontre de Moriond, edited by J.Tran Thanh Van, Vol. II, p. 15 and SLAC-PUB2118 (1978).Google Scholar
  90. 62.
    J.D.Bjorken and S.J.Brodsky, Phys. Rev., Dl, 1416 (1970).Google Scholar
  91. 63.
    See, for example, F.Steiner, DESY Report 78 /59 (1978).Google Scholar
  92. PLUTO collaboration, Ch. Berger et al., Phys. Lett., B78, 176 (1978).Google Scholar
  93. 65.
    P.Binètruy and G.Girardi, Phys. Lett., 83B, 339 (1979);Google Scholar
  94. P.M.Stevenson, Phys. Rev. Lett., 41, 787 (1978);CrossRefGoogle Scholar
  95. B.G.Weeks, Phys. Lett., 81B, 377 (1979).Google Scholar
  96. 66.
    To order as, the cancellation of mass divergence in f(e,6) can be derived from the theorem of Lee and Nauenberg (Reference 10, see especially appendix D and Section II).Google Scholar
  97. 67.
    M.B.Einhorn, B.G.Weeks, Nucl. Phys., 146B, 445 (1978);CrossRefGoogle Scholar
  98. A.V.Smilga, M.I.Vysotsky, Nucl. Phys., 150, 173 (1979).CrossRefGoogle Scholar
  99. 68.
    A.Duncan, S.Gupta, A.H.Mueller, Columbia University Report CU-TP-179 (1980);Google Scholar
  100. A.Mueller, Columbia University Report CU-TP-192 (1980).Google Scholar
  101. 69.
    J.B.Kogut and L.Susskind, Phys. Rev., D9, 697, 3391 (1974).Google Scholar
  102. 70.
    This sentence is copied from Reference 11, p. 254–255.Google Scholar
  103. 71.
    T.A.DeGrand, Y.J.Ng and S.H.H.Tye, Phys. Rev., D16, 3251 (1977).Google Scholar
  104. 72.
    G.Sterman, University of Illinois, Preprint ILL-(Th)-75–32 (1975).Google Scholar
  105. 73.
    T.Appelquist and H.D.Politzer, Phys. Rev. Lett., 34, 43 (1975); Phys. Rev., D12, 1404 (1975).Google Scholar
  106. 74.
    K.Koller and T.F.Walsh, Phys. Lett., 72B, 227 (1977);Google Scholar
  107. M.Krammer and H.Krasemann, Phys. Lett., 73B, 58 (1978);Google Scholar
  108. S.J.Brodsky, D.G.Coyne, T.A.DeGrand and R.R.Horgan, Phys. Lett., 73B, 203 (1978).Google Scholar
  109. 75.
    K.Shizuya and S.H.H.Tye, Phys. Rev. Lett., 41, 787 (1978).CrossRefGoogle Scholar
  110. 76.
    G.Wolf, DESY Report 80/13 (1980).Google Scholar
  111. 77.
    E.Farhi, Phys. Rev. Lett., 39, 1436 (1977); S.Brandt et al., Phys. Lett., 12, 57 (1964).CrossRefGoogle Scholar
  112. 78.
    See Hoyer et al., in Reference 12.Google Scholar
  113. 79.
    Examples of such models are the Constituent Interchange Models (see Reference 71 and references therein) and the Geometrical Models of G.Preparata and co-workers (see G.Preparata, CERN Report TH-2713 and references therein).Google Scholar
  114. 80.
    See A.De Rujula et al (Reference 12).Google Scholar
  115. 81.
    J.G.Körner, G.Schierholz and J.Willrodt, DESY Report 80 /119 (1980).Google Scholar
  116. 82.
    This result could also be obtained from the leading log calculations reported in E.Curci and M.Greco, Phys. Lett., 79E, 406 (1978), and A.V.Smilga, Phys. Lett., 83B, 357 (1979).Google Scholar
  117. 83.
    Z.Kunszt, DESY Report 80/89.Google Scholar
  118. 84.
    G.Altarelli, R.K.Ellis and G.Martinelli, Nucl. Phys., B143, 521 (1978) (erratum: B146, 544 (1978); ibid B157, 461 (1979);Google Scholar
  119. J.Kubar-André and F.E.Paige, Phys. Rev., D19, 221 (1979).Google Scholar
  120. 85.
    See, for example, R.D.Field, lectures given at the Boulder Summer School, University of Colorado (July 1979) and CALT-68–739 (1979).Google Scholar
  121. 86.
    For power corrections at short distances see H.D.Politzer, CALT-68–765 (1980).Google Scholar
  122. 87.
    R.Blankenbecler, S.Brodsky and J.Gunion, Phys. Rev., D18, 900 (1978);See also DeGrand et al., (Reference 71)Google Scholar
  123. 88.
    M.Voloshin and V.Zakharov, DESY Report 80/41 (1980).Google Scholar
  124. 89.
    A.Ali, Z. f. Physik, Cl, 25 (1979).Google Scholar
  125. 90.
    A.Ali, J.G.Körner, G.Kramer and J.Willrodt, Z. f. Physik, Cl, 203 (1979);Google Scholar
  126. Nucl. Phys., 68B, 409 (1980); See also De Rujula et al. (Reference 12).Google Scholar
  127. 91.
    For references to original literature see the review arti- cles by Buras (Reference 27), J.Ellis and C.T.Sachrajada (Reference 35) and Field (Reference 85).Google Scholar
  128. 92.
    G.Altarelli and G.Parisi, Nucl. Phys., B126 298 (1977).Google Scholar
  129. 93.
    T.Uematsu, Phys. Lett., 79B, 210 (1978); J.F.Owens, Phys. Lett., 76B, 85 (1978).Google Scholar
  130. 94.
    R.K.Ellis, H.Georgi, M.Machacek, H.D.Politzer and G.G.Ross, Phys. Lett., 78B, 281 (1978);Google Scholar
  131. Nucl. Phys., B152, 285 (1979).Google Scholar
  132. 95.
    C.Day and M.Suzuki, LBL Preprint 12077 (1980).Google Scholar
  133. 96.
    M.Suzuki, Phys. Lett., 71B, 139 (1977) and LBL Report 10094 (1979);Google Scholar
  134. J.D.Bjorken, Phys. Rev., D17, 171 (1978).Google Scholar
  135. 97.
    K.Konishi, A.Ukawa and G.Veneziano, Nucl. Phys., P157, 45 (1979);CrossRefGoogle Scholar
  136. D.Amati and G.Veneziano, Phys. Lett., 83B 87 (1979); W.Furmanski, CERN Report TH-2664 (1979);Google Scholar
  137. C.H.Lai, J.L.Petersen and T.F.Walsh, NORDITA Report NBIHE-80–8 (1980);Google Scholar
  138. G.C.Fox and S.Wolfram, Caltech Report CALT-68–755 (1980); K.Kajantie and E.Pietarinen, DESY Report 80 /19 (1980).Google Scholar
  139. 98.
    J.Oliensis, Fermilab Report - 80/88 - THY (1980).Google Scholar
  140. 99.
    A.H.Mueller, Phys. Rev., D18, 3705 (1978); S.Gupta and A.H.Mueller, Phys. Rev., D20, 118 (1979).Google Scholar
  141. 100.
    See, for example, L.Sehgal, 1977 Lepton-Photon Symp., ed. F.Gutbrod, Hamburg (1978).Google Scholar
  142. 101.
    C.Peterson and T.F.Walsh, NORDITA Report 80/1 (1980).Google Scholar
  143. 102.
    I would like to thank Gunter Wolf for a discussion on this point.Google Scholar
  144. 103.
    B.H.Wiik, Proceedings of the XXth International Conference on High Energy Physics, Wisconsin, Madison (1980), also available as DESY Report 80/124;Google Scholar
  145. R.Brandelik et al., TASSO collaboration, DESY 81–005 (1981).Google Scholar
  146. 104.
    I would like to thank R.Felst and members of the JADE Collaboration for a discussion on this point.Google Scholar
  147. 105.
    L.Clavelli and H.P.Nilles, Univ. of Bonn Report HE-79–14 (1979);Google Scholar
  148. See also H.P.Nilles, SLAC Report, SLAC-PUB-2479 (1980).Google Scholar
  149. 106.
    W.Bartel et al., JADE collaboration, DESY 81–009 (1981).Google Scholar
  150. 107.
    An effect similar to the one seen in the JADE analysis is also present in the analysis of 2-jet events (H.Meyer, private communication).Google Scholar
  151. 108.
    For charge correlation studies see Field and Feynman (Ref. 16); See also M.J.Teper, Phys. Lett., 90B, 443 (1980);Google Scholar
  152. C.J.Maxwell and M.J.Teper, Z. f. Physik C (to be published) and DESY Report (in preparation).Google Scholar
  153. 109.
    S.C.Cooper, Ph.D. Thesis, Univ. of California, Berkeley Calif. (1980) also available as LBL-Report LBL-11322 (1980).Google Scholar
  154. 110.
    I.Cohen et al., Phys. Rev. Lett., 40, 1614 (1978).CrossRefGoogle Scholar
  155. 111.
    A.Ali, J.G.Körner, J.Willrodt and G.Kramer, Phys. Lett., 83B, 375 (1979);Google Scholar
  156. G.Kramer, Field Theoretical Methods in Particle Physics, NATO Advanced Study Institutes Series, vol. 55 (Plenum USA) Ed. W.RUhl.Google Scholar
  157. 112.
    Ch.Berger et al., PLUTO Collaboration, Phys. Lett., 81B410 (1979).Google Scholar
  158. 113.
    F.A.Berends and R.Kleiss, DESY Reports 80/66 and 80/73 (1980).Google Scholar
  159. 114.
    G.Bonneau and F.Martin, Nucl. Phys., B27, 381 (1971).CrossRefGoogle Scholar
  160. 115.
    A.Ali, Proceedings of the XXth Int. Conf. on High Energy Physics, Wisconsin, Madison (1980), also available as DESY Report 80 /103 (1980).Google Scholar
  161. 116.
    Ch.Berger et al., PLUTO collaboration, DESY Report 78/71 and Phys. Lett., 82B, 449 (1979).Google Scholar
  162. 117.
    D.Gross, Phys. Rev. Lett., 32, 1071 (1974).CrossRefGoogle Scholar
  163. 118.
    M.Piccolo et al., Phys. Lett., 86B, 220 (1979);Google Scholar
  164. P.A.Rapidis et al., Phys. Lett., 84B, 507 (1979);Google Scholar
  165. See also M.W.Coles, Ph.D. Thesis, University of California Berkeley, Calif. (1980), also available as LBL-Report 115 /3 (1980).Google Scholar
  166. 119.
    Samuel C.C.Ting, companion article in this volume. See also D.P.Barber et al., MARK-J collaboration, M.I.T. Report 107 (1980).Google Scholar
  167. 120.
    R.Brandelik et al., TASSO collaboration, Phys. Lett., 94B, 437 (1980).Google Scholar
  168. 121.
    J.E.Freeman, Ph.D. Thesis, Univ. of Wisconsin, Madison, Wisconsin (1981). I would like to thank Jim Freeman for several discussions.Google Scholar
  169. S.Yamada, JADE collaboration, Proceedings of the XXth Int. Conf. on High Energy Physics, Wisconsin, Madison (1980).Google Scholar
  170. 123.
    Ch.Berger et al., PLUTO collaboration, DESY Report 80 /93 (1980).Google Scholar
  171. H.Newman, MARK-J collaboration, Proceedings of the XXth Int. Conf. on High Energy Physics, Wisconsin, Madison (1980).Google Scholar
  172. 125.
    A.Ali (in preparation).Google Scholar
  173. 126.
    Yu.L.Dokshitzer, D.I.D’yakonov and S.I.Troyan, Proc. XIII Winter School of the Leningrad Institute of Nuclear Physics, Leningrad, 1978 and SLAC-TRAS-183;Google Scholar
  174. Phys. Lett., 78B, 290 (1978).Google Scholar
  175. 127.
    Franz Kafka, ‘On parables’.Google Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • A. Ali
    • 1
  1. 1.Deutaches Elektronen-Synchrotron DESYHamburgGermany

Personalised recommendations