Footnotes

1. For an impression of this intellectual climate, see the lectures of Chew and Dalitz, published side-by-side in DeWitt and Jacob, 1965.
2. See in this connection the lectures of Gell-Mann and Wilczek in Zerwas and Kastrup, 1992.
3. Among the landmarks of this development are Faddeev and Popov, 1967; 't Hooft, 1971a, 1971b; 't Hooft and Veltman, 1972; and Lee and Zinn-Justin, 1972a, 1972b, 1972c.
4. Coordinated Theoretical-Experimental Project on QCD.
5. Brodsky and Lepage, 1989, summarize this subject up to that time. Much recent work has discussed the roles of Sudakov effects (Landshoff and Pritchard, 1980; Lepage and Brodsky, 1980; Mueller, 1981; Pire and Ralston, 1982; Botts and Sterman, 1989; Li and Sterman, 1992) and "soft" physics (Isgur and Llewellyn Smith, 1989; Radyushkin, 1984; Jacob and Kroll, 1993).
6. See especially the reviews of Gribov, Levin, and Ryskin, 1983, Levin and Ryskin, 1990, and the discussion of modified evolution in Mueller and Qiu, 1986.
7. See Kuraev, Lipatov, and Fadin, 1977; Balitskii and Lipatov, 1978; Lipatov, 1989; Faddeev and Korchemsky, 1994.
8. For a variety of applications, see Collins and Soper, 1981; Mueller, 1981; Sen, 1981; Sterman, 1987; Collins, 1989; Catani and Trentadue, 1991; Catani, Trunock, Webber, and Trentadue, 1983.
9. Tkachov, 1983.
10. See the reviews of Bassetto, Ciafaloni, and Marchesini, 1983; Dokshitzer, Khoze, and Troyan, 1989; Dokshitzer et al., 1991.
11. Reviewed in Frankfurt and Strikman, 1988.
12. Brodsky, 1982; Mueller, 1982; Brodsky and Mueller, 1988.
13. How to minimize these errors in practical cases is a subject of on-going discussion and controversy (Stevenson, 1981, 1984; Brodsky, Lepage, and Mackenzie, 1983; Brodsky and Lu, 1994). We shall take the point of view that weak dependence is a good qualitative sign that errors are not large, but that this assumption must be closely examined on a case-by-case basis.
14. Spin-dependence has lately emerged as a topic of interest and controversy in experiment (Ashman et al., 1988, 1989; see also Alguard et al., 1978, 1979; Baum et al.,1983) and theory (Altarelli and Ross, 1988; Carlitz, Collins, and Mueller, 1988; Efremov and Teryaev, 1988; Bodwin and Qiu, 1990; Jaffe and Manohar, 1990; Glück and Reya, 1991).
15. The erratum refers to the expression for F₃ on page III.52 in Particle Data Group, 1992; it does not apply to the Particle Properties Data Booklet.
16. See Drell, Levy, and Yan, 1969a, 1969b, 1970; Drell and Yan, 1970, 1971; Yan and Drell, 1970.
17. Analysis of this kind has been phrased in terms of generalized parton distributions (Ellis, Furmanski, and Petronzio, 1982, 1983; Jaffe, 1983; Qiu, 1990; Qiu and Sterman, 1991a) and in terms of the operator product expansion (Okawa, 1981; Shuryak and Vainshtein, 1981; Jaffe and Soldate, 1982; Luttrell and Wada, 1982) which fall off as powers of Q².
18. Early papers on this subject include those of Mueller, 19_74, Politzer, 1977, and Sachrajda, 1978. All-order discussions, concentrating for the most part on the role of collinear divergences were given by Amati, Petronzio, and Veneziano, 1978a, 1978b; Libby and Sterman, 1978a, 1978b; Ellis et al., 1979; and Efremov and Radyushkin, 1980a, 1980b. The delicate role of infrared divergences was brought out in the two-loop calcualtions of Doria, Frenkel, and Taylor, 1980, and DiLieto, Gendron, Halliday, and Sachrajda, 1981, and were dealt with at all orders by Bodwin, 1985; and Collins, Soper, and Sterman, 1985, 1988. For a review of the status of the theorem, see Collins, Soper, and Sterman, 1989.
19. For example, see Ralston and Soper, 1979; Efremov and Teryaev, 1985; Artru and Mekhfi, 1990; Qiu and Sterman, 1991b; Jaffe and Ji, 1991; Collins, 1993a, 1993b.
20. See Mueller, 1978; Ralston and Soper, 1979; Curci, Furmanski, and Petronzio, 1980; Collins and Soper, 1982; Artru and Mekhfi, 1990; Collins, Heppelmann, and Ladinsky, 1994; Collins, 1993a; Jaffe and Ji, 1991.
21. Named for the Durham Workshop on Jet Studies at LEP and HERA, December, 1990, out of which it developed.
22. See Furmanski and Petronzio, 1982; Matsuura, Hamberg, and van Neerven, 1990; Hamberg, 1991; Hamberg, van Neerven, and Matsuura, 1991; van Neerven and Zijlstra, 1991, 1992; and Zijlstra and van Neerven, 1991, 1992.
23. See Matsuura, Hamberg, and van Neerven, 1990; Hamberg, 1991; Hamberg, van Neerven, and Matsuura, 1991; van Neerven and Zijlstra, 1991, 1992; and Zijlstra and van Neerven, 1991, 1992.
24. For a broader historical perspective, see Cahn and Goldhaber, 1989.
25. Note, to leading order, the structure functions are simply related to the parton distributions. However, beyond leading-order, the relations are more complex.
26. For lack of space we can neither cite all experiments, nor all references. For those experiments discussed, the experiment number is given so that the interested reader can find a complete list of publications in Galic et al., 1992. Note that this information is also available on the SPIRES database.
27. For a historical perspective of the DIS experiments, see Sciulli, 1991.
28. References to recent work can be found in Collins, Heppelmann, and Robinett, 1991, and in Bunce et al., 1992. See also Hughes and Kuti, 1983.
29. The calculations of the partonic cross sections given here were first reported by Witten, 1976; Babcock and Sivers, 1978; Babcock, Sivers, and Wolfram, 1978; Georgi, Glashow, Machacek, and Nanopoulos, 1978; Glück, Owens, and Reya, 1978; Jones and Wyld, 1978; Shifman, Vainstein, and Zakharov, 1978, 1988; Combridge, 1979; Glück and Reya, 1979; Hagiwara and Yoshino, 1979; Leveille and Weiler, 1979; Mattiae, 1981.
30. Floratos, Ross, and Sachrajda, 1977; Gonzalez-Arroyo et al., 1979; Gonzalez-Arroyo and Lopez, 1979; Curci, Furmanski, and Petronzio, 1980; Furmanski and Petronzio, 1980; Herrod and Wada, 1980; Floratos, Lacaze, and Kounnas, 1981a, 1981b; and Herrod et al., 1981.
31. This appendix closely follows a similar discussion by Owens, 1987.