Summary
The QCD approach to large-transverse-momentum inclusive single-hadron production is extended to two-hadron correlations. Detailed comparisons with the data on transverse-momentum sharing (x e) distributions are presented; it is shown that the scale violations in the parton fragmentation functions are of essential importance in obtaining agreement with experiment. Opposite-side rapidity distributions are also presented and the question of back-to-back effects is discussed. It is concluded that, on the whole, QCD adequately describes the data.
Riassunto
Si estende l'approccio QCD alla produzione inclusiva ad adrone singolo con impulso trasversale alto a correlazioni a due adroni. Si presentano confronti dettagliati con i dati sulle distribuzioni delle suddivisioni (x e) dell'impulso trasversale; si mostra che le violazioni di scala nelle funzioni di frammentazione dei partoni sono d'importanza essenziale per ottenere l'accordo con gli esperimenti. Si presentano anche le distribuzioni di rapidità a lato opposto e si discute la questione degli effetti back-to-back. Si conclude che, nel complesso, la QCD descrive i dati in maniera adeguata.
Резюме
Подход квантовой хромодинамики, развитый для инклюзивного одно-адронного рождения с большими поперечными импульсами, обобщается на случай двух-адронных корреляций. Проводится подробное сравнение с данными для распределений по поперечному импульсу. Показывается, что нарушения масштаба в функциях фрагментации партона играют существенную роль для получения согласия с экспериментом. Делается утверждение, что квантовая хромодинамика в целом адекватно описывает экспериментальные данные.
Similar content being viewed by others
References
S. Berman, J. Bjorken andJ. Kogut:Phys. Rev. D,4, 3388 (1971).
A. P. Contogouris, R. Gaskell andS. Papadopoulos:Phys. Rev. D,17, 2314 (1978).
R. Field:Phys. Rev. Lett.,40, 997 (1978);G. Ranft andJ. Ranft: Leipzig preprint KMU-HEP-78-06;J. Owens andJ. Kimmel: Florida preprint 78-03-30.
A. P. Contogouris:XIII Rencontre de Moriond, Les Arcs, France, March 12–18, 1978, McGill preprint.
C. T. Sachrajda:Phys. Lett.,76 B, 100 (1978) and CERN preprint TH-2492 (XIII Rencontre de Moriond).
D. Amati, R. Petronzio andG. Veneziano: CERN preprints, TH-2470 and-2527;R. Petronzio: TH-2495 (XIII Recontre de Moriond);R. Ellis, H. Georgi, M. Machacek, H. D. Politzer andG. Ross: MIT preprint CTP 718;S. Libby andG. Sterman: Stony Brook preprint ITP-SB-78-41.
C. Llewellyn Smith: Oxford preprint (1978);V. Dokshitzer, D. D'yakonov andS. Troyan: Leningrad preprint (1978).
A. P. Contogouris andR. Gaskell:Nucl. Phys.,126 B, 157 (1977).
S. D. Ellis andR. Stroynowski:Rev. Mod. Phys.,49, 753 (1977);S. D. Ellis: inParticles and Fields, 1977 (Amer. Inst. of Phys.), p. 271.
A. P. Contogouris, R. Gaskell andA. Nicolaidis:Phys. Rev. D,17, 2992 (1978);Proceedings of the VIII International Symposium on Multiparticle Dynamics, Kaysersberg (France), p. B-225.
S. D. Ellis andM. Kisslinger:Phys. Rev. D,9, 2027 (1974).
P. Darriulat, P. Dittmann, K. Eggert, M. Holder, K. T. McDonald, T. Modis, F. L. Navarria, A. Seiden, J. Strauss, G. Vesztergombi, E. G. H. Williams:Nucl. Phys.,110 B, 365 (1976).
S. Brodsky andG. Farrar:Phys. Rev. Lett.,31, 1153 (1973);V. Matveev, R. Muradyan andA. Tavkhelidze:Lett. Nuovo Cimento,5, 907 (1972);S. Brodsky:La Jolla Elementary Particles Workshop (1978).
D. Cassel: inParticles and Fields, 1977 (Amer. Inst. of Phys.), p. 297.
V. Gribov andL. Lipatov:Yad. Fiz.,15, 1218 (1972).
G. Fox:Nucl. Phys.,131 B, 107 (1977) and private communication.
A. Buras andK. Gaemers:Nucl. Phys.,132 B, 249 (1978) obtain a strongerQ 2-dependence.
M. Fontannaz andD. Schiff:Nucl. Phys.,132 B, 457 (1978).
R. Baier, J. Cleymans, K. Kinoshita andB. Peterson:Nucl. Phys.,118 B, 139 (1977).
B. Combridge, J. Kripfganz andJ. Ranft:Phys. Lett.,70 B, 234 (1977);J. Owens, E. Reya andM. Glück: Florida preprint 77-09-07;R. Cutler andD. Sivers:Phys. Rev. D,17, 196 (1978).
M. Della Negra, D. Drijard, H. G. Fischer, G. Fontaine, H. Frehse, P. Frenkiel, C. Ghesquière, R. Gokieli, P. Hanke, W. Hofmann, P. G. Innocenti, W. Isenbeck, E. E. Kluge, V. Korbel, D. Linglin, A. Minten, A. Norton, A. Putzer, G. Sajot, R. Sosnowski, S. Stein, J. Stiewe, H. D. Wahl andD. Wegner:Nucl. Phys.,127 B, 1 (1977).
R. Sosnowski: report to theIX International Symposium on Multiparticle Dynamics, Tabor (Czechoslovakia), July 3–7, 1978.
A. Norton: report to theIX International Symposium on Multiparticle Dynamics, Tabor (Czechoslovakia), July 3–7, 1978.
M. G. Albrow, S. Almehed, P. S. L. Booth, X. de Bouard, H. Bøggild, L. J. Carroll, P. Catz, E. Dahl-Jensen, I. Dahl-Jensen, G. Damgaard, G. von Dardel, N. Elverhaug, K. H. Hansen, J. N. Jackson, G. Jancso, G. Jarlskog, H. B. Jensen, L. Jönsson, A. Klovning, E. Lillethun, A. Lu, B. Lörstad, N. A. McCubbin, H. E. Miettinen, J. V. Morris, R. Møller, S. Ø. Nielsen, J. O. Petersen, J. A. J. Skard andP. Villeneuve (British-French-Scandinavian Collaboration): CERN preprint (July 1978).
Qualitatively similar results have been recently obtained inR. Feynman, R. Field andG. Fox: preprint CALT-68-651.
A. P. Contogouris, R. Gaskell andA. Nicolaidis:Phys. Rev. D,17, 839 (1978);Prog. Theor. Phys.,58, 1238 (1977).
R. Sosnowski:Proceedings of the XVIII International Conference on High-Energy Physics, Tbilisi (GSSR), July 1976, p. A4-3.
For other important manifestations of gluons seee.g. S.D. Ellis: RLO-1388-757 (XIII Rencontre de Moriond).
M. Della Negra: review talk,VII International Symposium on Multiparticle Dynamics, Tutzing, Munich (1976).
E.-M. Ilgenfritz, J. Kripfganz, H.-J. Möhring, G. Ranft, J. Ranft andA. Schiller:Acta Phys. Pol.,9 B, 15 (1978).
B. Combridge: private communication.
Author information
Authors and Affiliations
Additional information
Also supported by the National Research Council of Canada and the Québec Department of Education.
Traduzione a cura della Redazione.
Переведено редакцией.
Rights and permissions
About this article
Cite this article
Contogouris, A.P., Gaskell, R. & Papadopoulos, S. Large-transverse-momentum correlations in quantum chromodynamics. Nuov Cim A 51, 263–276 (1979). https://doi.org/10.1007/BF02775425
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02775425