A sample of two-jet events from the UA1 experiment at the CERN pp̄ Collider has been used to study the fragmentation of high-energy quark and gluon jets into charged hadrons. Compared with lower-energy jets observed in e+e- and pp collisions, the fragmentation function measured in the present experiment is softer (i.e. peaked to smaller values of z) and the mean internal transverse momentum is larger, mainly because of the effects of the QCD scaling violations. Using our knowledge of the quark and gluon structure functions in the proton, together with the QCD matrix elements, a statistical separation of quark and gluon jets is achieved within the present experiment. The fragmentation function for the gluon jets is found to be softer, and the angular spread of the fragmentation products larger, than is the case for quark jets. © 1986.

Analysis of the fragmentation properties of quark and gluon jets at the CERN SPS pp̄ collider / G., Arnison; M. G., Albrow; O. C., Allkofer; A., Astbury; B., Aubert; C., Bacci; J. R., Batley; G., Bauer; A., Bezaguet; R. K., Bock; E., Buckley; M., Calvetti; P., Catz; P., Cennini; S., Centro; F., Ceradini; G., Ciapetti; S., Cittolin; D., Cline; C., Cochet; J., Colas; M., Corden; D., Dallman; D., Dau; M., Debeer; M., Della Negra; M., Demoulin; B., Denby; D., Denegri; D., Dibitonto; A., Diciaccio; L., Dobrzynski; J., Dorenbosch; J. D., Dowell; R., Edgecock; K., Eggert; E., Eisenhandler; N., Ellis; P., Erhard; H., Faissner; M., Fincke Keeler; P., Flynn; G., Fontaine; R., Frey; R., Fruhwirth; J., Garvey; S., Geer; C., Ghesquiere; P., Ghez; K. L., Giboni; W. R., Gibson; Y., Giraud Heraud; A., Givernaud; A., Gonidec; M., Goodman; G., Grayer; W., Guryn; T., Hansl Kozanecka; W., Haynes; L. O., Hertzberger; D., Hoffmann; H., Hofmann; D. J., Holthuizen; R. J., Homer; A., Honma; W., Jank; G., Jorat; P. I. P., Kalmus; V., Karimaki; R., Keeler; I., Kenyon; A., Kernan; R., Kinnunen; W., Kozanecki; D., Kryn; P., Kyberd; Lacava, Francesco; J. P., Laugier; J. P., Lees; H., Lehmann; R., Leuchs; S., Levegrun; A., Leveque; M., Levi; D., Linglin; E., Locci; T., Markiewicz; M., Markytan; T., Martin; G., Maurin; T., Mcmahon; J. P., Mendiburu; O., Meyer; T., Meyer; M. N., Minard; M., Mohammadi; K., Morgan; M., Moricca; B., Mours; Th, Muller; A., Nandi; L., Naumann; A., Norton; L., Paoluzi; F., Pauss; C., Perault; G., Piano Mortari; E., Pietarinen; M., Pimia; D., Pitman; A., Placci; J. P., Porte; E., Radermacher; J., Ransdell; T., Redelberger; H., Reithler; J. P., Revol; J., Rich; M., Rijssenbeek; J., Rohlf; C., Roberts; P., Rossi; C., Rubbia; G., Sajot; G., Salvini; J., Sass; B., Sadoulet; A., Savoy Navarro; D., Schinzel; W., Scott; T. P., Shah; I., Sheer; D., Smith; R., Sobie; M., Stenzler; J., Strauss; J., Streets; K., Sumorok; F., Szoncso; C., Tao; G., Thompson; J., Timmer; E., Tscheslog; J., Tuominiemi; B., Van Eijk; P., Verecchia; J. P., Vialle; J., Vrana; V., Vuillemin; H. D., Wahl; P., Watkins; R., Wilke; J., Wilson; I., Wingerter; C. E., Wulz; T., Wyatt; M., Yvert; L., Zanello. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 276:2(1986), pp. 253-271. [10.1016/0550-3213(86)90296-8]

Analysis of the fragmentation properties of quark and gluon jets at the CERN SPS pp̄ collider

LACAVA, Francesco;
1986

Abstract

A sample of two-jet events from the UA1 experiment at the CERN pp̄ Collider has been used to study the fragmentation of high-energy quark and gluon jets into charged hadrons. Compared with lower-energy jets observed in e+e- and pp collisions, the fragmentation function measured in the present experiment is softer (i.e. peaked to smaller values of z) and the mean internal transverse momentum is larger, mainly because of the effects of the QCD scaling violations. Using our knowledge of the quark and gluon structure functions in the proton, together with the QCD matrix elements, a statistical separation of quark and gluon jets is achieved within the present experiment. The fragmentation function for the gluon jets is found to be softer, and the angular spread of the fragmentation products larger, than is the case for quark jets. © 1986.
1986
01 Pubblicazione su rivista::01a Articolo in rivista
Analysis of the fragmentation properties of quark and gluon jets at the CERN SPS pp̄ collider / G., Arnison; M. G., Albrow; O. C., Allkofer; A., Astbury; B., Aubert; C., Bacci; J. R., Batley; G., Bauer; A., Bezaguet; R. K., Bock; E., Buckley; M., Calvetti; P., Catz; P., Cennini; S., Centro; F., Ceradini; G., Ciapetti; S., Cittolin; D., Cline; C., Cochet; J., Colas; M., Corden; D., Dallman; D., Dau; M., Debeer; M., Della Negra; M., Demoulin; B., Denby; D., Denegri; D., Dibitonto; A., Diciaccio; L., Dobrzynski; J., Dorenbosch; J. D., Dowell; R., Edgecock; K., Eggert; E., Eisenhandler; N., Ellis; P., Erhard; H., Faissner; M., Fincke Keeler; P., Flynn; G., Fontaine; R., Frey; R., Fruhwirth; J., Garvey; S., Geer; C., Ghesquiere; P., Ghez; K. L., Giboni; W. R., Gibson; Y., Giraud Heraud; A., Givernaud; A., Gonidec; M., Goodman; G., Grayer; W., Guryn; T., Hansl Kozanecka; W., Haynes; L. O., Hertzberger; D., Hoffmann; H., Hofmann; D. J., Holthuizen; R. J., Homer; A., Honma; W., Jank; G., Jorat; P. I. P., Kalmus; V., Karimaki; R., Keeler; I., Kenyon; A., Kernan; R., Kinnunen; W., Kozanecki; D., Kryn; P., Kyberd; Lacava, Francesco; J. P., Laugier; J. P., Lees; H., Lehmann; R., Leuchs; S., Levegrun; A., Leveque; M., Levi; D., Linglin; E., Locci; T., Markiewicz; M., Markytan; T., Martin; G., Maurin; T., Mcmahon; J. P., Mendiburu; O., Meyer; T., Meyer; M. N., Minard; M., Mohammadi; K., Morgan; M., Moricca; B., Mours; Th, Muller; A., Nandi; L., Naumann; A., Norton; L., Paoluzi; F., Pauss; C., Perault; G., Piano Mortari; E., Pietarinen; M., Pimia; D., Pitman; A., Placci; J. P., Porte; E., Radermacher; J., Ransdell; T., Redelberger; H., Reithler; J. P., Revol; J., Rich; M., Rijssenbeek; J., Rohlf; C., Roberts; P., Rossi; C., Rubbia; G., Sajot; G., Salvini; J., Sass; B., Sadoulet; A., Savoy Navarro; D., Schinzel; W., Scott; T. P., Shah; I., Sheer; D., Smith; R., Sobie; M., Stenzler; J., Strauss; J., Streets; K., Sumorok; F., Szoncso; C., Tao; G., Thompson; J., Timmer; E., Tscheslog; J., Tuominiemi; B., Van Eijk; P., Verecchia; J. P., Vialle; J., Vrana; V., Vuillemin; H. D., Wahl; P., Watkins; R., Wilke; J., Wilson; I., Wingerter; C. E., Wulz; T., Wyatt; M., Yvert; L., Zanello. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 276:2(1986), pp. 253-271. [10.1016/0550-3213(86)90296-8]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/486488
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