First measurement of the quark-to-photon fragmentation function

Buskulic, D.; Casper, D.; Debonis, I.; Decamp, D.; Ghez, P.; Goy, C.; Lees, J.; Lucotte, A.; Minard, M.; Odier, P.; Pietrzyk, B.; Ariztizabal, F.; Chmeissani, M.; Crespo, J.; Efthymiopoulos, I.; Fernandez, F.; Fernandezbosman, M.; Gaitan, V.; Garrido, L.; Martinez, M.; Orteu, S.; Pacheco, A.; Padilla, C.; Palla, F.; Pascual, A.; Perlas, J.; Sanchez, F.; Teubert, F.; Colaleo, A.; Creanza, D.; Depalma, M.; Farilla, A.; Gelao, G.; Girone, M.; Iaselli, G.; Maggi, G.; Maggi, M.; Marinelli, N.; Natali, S.; Nuzzo, S.; Ranieri, A.; Raso, G.; Romano, F.; Ruggieri, F.; Selvaggi, G.; Silvestris, L.; Tempesta, P.; Zito, G.; Huang, X.; Lin, J.; Ouyang, Q.; Wang, T.; Xie, Y.; Xu, R.; Xue, S.; Zhang, J.; Zhang, L.; Zhao, W.; Bonvicini, G.; Cattaneo, M.; Comas, F.; Coyle, P.; Drevermann, H.; Engelhardt, A.; Forty, R.; Frank, M.; Hagelberg, R.; Harvey, J.; Jacobsen, R.; Janot, P.; Jost, B.; Knobloch, J.; Lehraus, I.; Markou, C.; Martin, E.; Mato, P.; Meinhard, H.; Minten, A.; Miquel, R.; Oest, T.; Palazzi, P.; Pater, J.; Pusztaszeri, J.; Ranjard, F.; Rensing, P.; Rolandi, L.; Schlatter, D.; Schmelling, M.; Schneider, O.; Tejessy, W.; Tomalin, I.; Venturi, A.; Wachsmuth, H.; Wiedenmann, W.; Wildish, T.; Witzeling, W.; Wotschack, J.; Ajaltouni, Z.; Bardadinotwinowska, M.; Barres, A.; Boyer, C.; Falvard, A.; Gay, P.; Guicheney, C.; Henrard, P.; Jousset, J.; Michel, B.; Monteil, S.; Montret, J.; Pallin, D.; Perret, P.; Podlyski, F.; Proriol, J.; Rossignol, J.; Saadi, F.; Fearnley, T.; Hansen, J.; Hansen, J.; Hansen, J.; Hansen, P.; Nilsson, B.; Kyriakis, A.; Simopoulou, E.; Siotis, I.; Vayaki, A.; Zachariadou, K.; Blondel, A.; Bonneaud, G.; Brient, J.; Bourdon, P.; Passalacqua, L.; Rouge, A.; Rumpf, M.; Tanaka, R.; Valassi, A.; Verderi, M.; Videau, H.; Candlin, D.; Parsons, M.; Focardi, E.; Parrini, G.; Corden, M.; Delfino, M.; Georgiopoulos, C.; Jaffe, D.; Antonelli, A.; Bencivenni, G.; Bologna, G.; Bossi, F.; Campana, P.; Capon, G.; Chiarella, V.; Felici, G.; Laurelli, F.; Mannocchi, G.; Murtas, F.; Murtas, G.; Pepealtarelli, M.; Dorris, S.; Halley, A.; Tenhave, I.; Knowles, I.; Lynch, J.; Morton, W.; Oshea, V.; Raine, C.; Reeves, P.; Scarr, J.; Smith, K.; Smith, M.; Thompson, A.; Thomson, F.; Thorn, S.; Turnbull, R.; Becker, U.; Braun, O.; Geweniger, C.; Graefe, G.; Hanke, P.; Hepp, V.; Kluge, E.; Putzer, A.; Rensch, B.; Schmidt, M.; Sommer, J.; Stenzel, H.; Tittel, K.; Werner, S.; Wunsch, M.; Beuselinck, R.; Binnie, D.; Cameron, W.; Colling, D.; Dornan, P.; Konstantinidis, N.; Moneta, L.; Moutoussi, A.; Nash, J.; Sanmartin, G.; Sedgbeer, J.; Stacey, A.; Dissertori, G.; Girtler, P.; Kneringer, E.; Kuhn, D.; Rudolph, G.; Bowdery, C.; Brodbeck, T.; Colrain, P.; Crawford, G.; Finch, A.; Foster, F.; Hughes, G.; Sloan, T.; Whelan, E.; Williams, M.; Galla, A.; Greene, A.; Kleinknecht, K.; Quast, G.; Raab, J.; Renk, B.; Sander, H.; Wanke, R.; Zeitnitz, C.; Aubert, J.; Bencheikh, A.; Benchouk, C.; Bonissent, A.; Bujosa, G.; Calvet, D.; Carr, J.; Diaconu, C.; Etienne, F.; Thulasidas, M.; Nicod, D.; Payre, P.; Rousseau, D.; Talby, M.; Abt, I.; Assmann, R.; Bauer, C.; Blum, W.; Brown, D.; Dietl, H.; Dydak, F.; Ganis, G.; Gotzhein, C.; Jakobs, K.; Kroha, H.; Lutjens, G.; Lutz, G.; Manner, W.; Moser, H.; Richter, R.; Rosadoschlosser, A.; Schael, S.; Settles, R.; Seywerd, H.; Stierlin, U.; Stdenis, R.; Wolf, G.; Alemany, R.; Boucrot, J.; Callot, O.; Cordier, A.; Courault, F.; Davier, M.; Duflot, L.; Grivaz, J.; Heusse, P.; Jacquet, M.; Kim, D.; Lediberder, F.; Lefrancois, J.; Lutz, A.; Musolino, G.; Nikolic, I.; Park, H.; Park, I.; Schune, M.; Simion, S.; Veillet, J.; Videau, I.; Abbaneo, D.; Azzurri, P.; Bagliesi, G.; Batignani, G.; Bettarini, S.; Bozzi, C.; Calderini, G.; Carpinelli, M.; Ciocci, M.; Ciulli, V.; Dellorso, R.; Fantechi, R.; Ferrante, I.; Foa, L.; Forti, F.; Giassi, A.; Giorgi, M.; Gregorio, A.; Ligabue, F.; Lusiani, A.; Marrocchesi, P.; Messineo, A.; Rizzo, G.; Sanguinetti, G.; Sciaba, A.; Spagnolo, P.; Steinberger, J.; Tenchini, R.; Tonelli, G.; Triggiani, G.; Vannini, C.; Verdini, P.; Walsh, J.; Betteridge, A.; Blair, G.; Bryant, L.; Cerutti, F.; Gao, Y.; Green, M.; Johnson, D.; Medcalf, T.; Mir, L.; Perrodo, P.; Strong, J.; Bertin, V.; Botterill, D.; Clifft, R.; Edgecock, T.; Haywood, S.; Edwards, M.; Maley, P.; Norton, P.; Thompson, J.; Blochdevaux, B.; Colas, P.; Duarte, H.; Emery, S.; Kozanecki, W.; Lancon, E.; Lemaire, M.; Locci, E.; Marx, B.; Perez, P.; Rander, J.; Renardy, J.; Rosowsky, A.; Roussarie, A.; Schuller, J.; Schwindling, J.; Simohand, D.; Trabelsi, A.; Vallage, B.; Johnson, R.; Kim, H.; Litke, A.; Mcneil, M.; Taylor, G.; Beddall, A.; Booth, C.; Boswell, R.; Cartwright, S.; Combley, F.; Dawson, I.; Koksal, A.; Letho, M.; Newton, W.; Rankin, C.; Thompson, L.; Bohrer, A.; Brandt, S.; Cowan, G.; Feigl, E.; Grupen, C.; Lutters, G.; Minguetrodriguez, J.; Rivera, F.; Saraiva, P.; Smolik, L.; Stephan, F.; Apollonio, M.; Bosisio, L.; Dellamarina, R.; Giannini, G.; Gobbo, G.; Ragusa, F.; Rothberg, J.; Wasserbaech, S.; Armstrong, S.; Bellantoni, L.; Elmer, P.; Feng, Z.; Ferguson, D.; Gao, Y.; Gonzalez, S.; Grahl, J.; Harton, J.; Hayes, O.; Hu, H.; Mcnamara, P.; Nachtman, J.; Orejudos, W.; Pan, Y.; Saadi, Y.; Schmitt, M.; Scott, I.; Sharma, V.; Turk, J.; Walsh, A.; Wu, S.; Wu, X.; Yamartino, J.; Zheng, M.; Zobernig, G.

doi:10.1007/s002880050037

Earlier measurements at LEP of isolated hard photons in hadronic Z decays, attributed to radiation from primary quark pairs, have been extended in the ALEPH experiment to include hard photon production inside hadron jets. Events are selected where all particles combine democratically to form hadron jets, one of which contains a photon with a fractional energy z greater than or equal to 0.7. After statistical subtraction of non-prompt photons, the quark-to-photon fragmentation function, D(z), is extracted directly from the measured 2-jet rate. By taking into account the perturbative contributions to D(z) obtained from an O(alpha alpha(s)) QCD calculation, the unknown non-perturbative component of D(z) is then determined at high z. Provided due account is taken of hadronization effects near z = 1, a good description of the other event topologies is then found.

First measurement of the quark-to-photon fragmentation function / D. Buskulic, D. Casper, I. DeBonis, D. Decamp, P. Ghez, C. Goy, J. Lees, A. Lucotte, M. Minard, P. Odier, B. Pietrzyk, F. Ariztizabal, M. Chmeissani, J. Crespo, I. Efthymiopoulos, F. Fernandez, M. FernandezBosman, V. Gaitan, L. Garrido, M. Martinez, S. Orteu, A. Pacheco, C. Padilla, F. Palla, A. Pascual, J. Perlas, F. Sanchez, F. Teubert, A. Colaleo, D. Creanza, M. dePalma, A. Farilla, G. Gelao, M. Girone, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Natali, S. Nuzzo, A. Ranieri, G. Raso, F. Romano, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, G. Bonvicini, M. Cattaneo, F. Comas, P. Coyle, H. Drevermann, A. Engelhardt, R. Forty, M. Frank, R. Hagelberg, J. Harvey, R. Jacobsen, P. Janot, B. Jost, J. Knobloch, I. Lehraus, C. Markou, E. Martin, P. Mato, H. Meinhard, A. Minten, R. Miquel, T. Oest, P. Palazzi, J. Pater, J. Pusztaszeri, F. Ranjard, P. Rensing, L. Rolandi, D. Schlatter, M. Schmelling, O. Schneider, W. Tejessy, I. Tomalin, A. Venturi, H. Wachsmuth, W. Wiedenmann, T. Wildish, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. BardadinOtwinowska, A. Barres, C. Boyer, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. Montret, D. Pallin, P. Perret, F. Podlyski, J. Proriol, J. Rossignol, F. Saadi, T. Fearnley, J. Hansen, J. Hansen, J. Hansen, P. Hansen, B. Nilsson, A. Kyriakis, E. Simopoulou, I. Siotis, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J. Brient, P. Bourdon, L. Passalacqua, A. Rouge, M. Rumpf, R. Tanaka, A. Valassi, M. Verderi, H. Videau, D. Candlin, M. Parsons, E. Focardi, G. Parrini, M. Corden, M. Delfino, C. Georgiopoulos, D. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, V. Chiarella, G. Felici, F. Laurelli, G. Mannocchi, F. Murtas, G. Murtas, M. PepeAltarelli, S. Dorris, A. Halley, I. tenHave, I. Knowles, J. Lynch, W. Morton, V. OShea, C. Raine, P. Reeves, J. Scarr, K. Smith, M. Smith, A. Thompson, F. Thomson, S. Thorn, R. Turnbull, U. Becker, O. Braun, C. Geweniger, G. Graefe, P. Hanke, V. Hepp, E. Kluge, A. Putzer, B. Rensch, M. Schmidt, J. Sommer, H. Stenzel, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D. Binnie, W. Cameron, D. Colling, P. Dornan, N. Konstantinidis, L. Moneta, A. Moutoussi, J. Nash, G. SanMartin, J. Sedgbeer, A. Stacey, G. Dissertori, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, C. Bowdery, T. Brodbeck, P. Colrain, G. Crawford, A. Finch, F. Foster, G. Hughes, T. Sloan, E. Whelan, M. Williams, A. Galla, A. Greene, K. Kleinknecht, G. Quast, J. Raab, B. Renk, H. Sander, R. Wanke, C. Zeitnitz, J. Aubert, A. Bencheikh, C. Benchouk, A. Bonissent, G. Bujosa, D. Calvet, J. Carr, C. Diaconu, F. Etienne, M. Thulasidas, D. Nicod, P. Payre, D. Rousseau, M. Talby, I. Abt, R. Assmann, C. Bauer, W. Blum, D. Brown, H. Dietl, F. Dydak, G. Ganis, C. Gotzhein, K. Jakobs, H. Kroha, G. Lutjens, G. Lutz, W. Manner, H. Moser, R. Richter, A. RosadoSchlosser, S. Schael, R. Settles, H. Seywerd, U. Stierlin, R. StDenis, G. Wolf, R. Alemany, J. Boucrot, O. Callot, A. Cordier, F. Courault, M. Davier, L. Duflot, J. Grivaz, P. Heusse, M. Jacquet, D. Kim, F. LeDiberder, J. Lefrancois, A. Lutz, G. Musolino, I. Nikolic, H. Park, I. Park, M. Schune, S. Simion, J. Veillet, I. Videau, D. Abbaneo, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, C. Bozzi, G. Calderini, M. Carpinelli, M. Ciocci, V. Ciulli, R. DellOrso, R. Fantechi, I. Ferrante, L. Foa, F. Forti, A. Giassi, M. Giorgi, A. Gregorio, F. Ligabue, A. Lusiani, P. Marrocchesi, A. Messineo, G. Rizzo, G. Sanguinetti, A. Sciaba, P. Spagnolo, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini, P. Verdini, J. Walsh, A. Betteridge, G. Blair, L. Bryant, F. Cerutti, Y. Gao, M. Green, D. Johnson, T. Medcalf, L. Mir, P. Perrodo, J. Strong, V. Bertin, D. Botterill, R. Clifft, T. Edgecock, S. Haywood, M. Edwards, P. Maley, P. Norton, J. Thompson, B. BlochDevaux, P. Colas, H. Duarte, S. Emery, W. Kozanecki, E. Lancon, M. Lemaire, E. Locci, B. Marx, P. Perez, J. Rander, J. Renardy, A. Rosowsky, A. Roussarie, J. Schuller, J. Schwindling, D. SiMohand, A. Trabelsi, B. Vallage, R. Johnson, H. Kim, A. Litke, M. McNeil, G. Taylor, A. Beddall, C. Booth, R. Boswell, S. Cartwright, F. Combley, I. Dawson, A. Koksal, M. Letho, W. Newton, C. Rankin, L. Thompson, A. Bohrer, S. Brandt, G. Cowan, E. Feigl, C. Grupen, G. Lutters, J. MinguetRodriguez, F. Rivera, P. Saraiva, L. Smolik, F. Stephan, M. Apollonio, L. Bosisio, R. DellaMarina, G. Giannini, G. Gobbo, F. Ragusa, J. Rothberg, S. Wasserbaech, S. Armstrong, L. Bellantoni, P. Elmer, Z. Feng, D. Ferguson, Y. Gao, S. Gonzalez, J. Grahl, J. Harton, O. Hayes, H. Hu, P. McNamara, J. Nachtman, W. Orejudos, Y. Pan, Y. Saadi, M. Schmitt, I. Scott, V. Sharma, J. Turk, A. Walsh, S. Wu, X. Wu, J. Yamartino, M. Zheng, G. Zobernig. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - 69:3(1996), pp. 365-377.

First measurement of the quark-to-photon fragmentation function

D. Buskulic;D. Casper;I. DeBonis;D. Decamp;P. Ghez;C. Goy;J. Lees;A. Lucotte;M. Minard;P. Odier;B. Pietrzyk;F. Ariztizabal;M. Chmeissani;J. Crespo;I. Efthymiopoulos;F. Fernandez;M. FernandezBosman;V. Gaitan;L. Garrido;M. Martinez;S. Orteu;A. Pacheco;C. Padilla;F. Palla;A. Pascual;J. Perlas;F. Sanchez;F. Teubert;A. Colaleo;D. Creanza;M. dePalma;A. Farilla;G. Gelao;M. Girone;G. Iaselli;G. Maggi;M. Maggi;N. Marinelli;S. Natali;S. Nuzzo;A. Ranieri;G. Raso;F. Romano;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;G. Bonvicini;M. Cattaneo;F. Comas;P. Coyle;H. Drevermann;A. Engelhardt;R. Forty;M. Frank;R. Hagelberg;J. Harvey;R. Jacobsen;P. Janot;B. Jost;J. Knobloch;I. Lehraus;C. Markou;E. Martin;P. Mato;H. Meinhard;A. Minten;R. Miquel;T. Oest;P. Palazzi;J. Pater;J. Pusztaszeri;F. Ranjard;P. Rensing;L. Rolandi;D. Schlatter;M. Schmelling;O. Schneider;W. Tejessy;I. Tomalin;A. Venturi;H. Wachsmuth;W. Wiedenmann;T. Wildish;W. Witzeling;J. Wotschack;Z. Ajaltouni;M. BardadinOtwinowska;A. Barres;C. Boyer;A. Falvard;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J. Montret;D. Pallin;P. Perret;F. Podlyski;J. Proriol;J. Rossignol;F. Saadi;T. Fearnley;J. Hansen;J. Hansen;J. Hansen;P. Hansen;B. Nilsson;A. Kyriakis;E. Simopoulou;I. Siotis;A. Vayaki;K. Zachariadou;A. Blondel;G. Bonneaud;J. Brient;P. Bourdon;L. Passalacqua;A. Rouge;M. Rumpf;R. Tanaka;A. Valassi;M. Verderi;H. Videau;D. Candlin;M. Parsons;E. Focardi;G. Parrini;M. Corden;M. Delfino;C. Georgiopoulos;D. Jaffe;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;V. Chiarella;G. Felici;F. Laurelli;G. Mannocchi;F. Murtas;G. Murtas;M. PepeAltarelli;S. Dorris;A. Halley;I. tenHave;I. Knowles;J. Lynch;W. Morton;V. OShea;C. Raine;P. Reeves;J. Scarr;K. Smith;M. Smith;A. Thompson;F. Thomson;S. Thorn;R. Turnbull;U. Becker;O. Braun;C. Geweniger;G. Graefe;P. Hanke;V. Hepp;E. Kluge;A. Putzer;B. Rensch;M. Schmidt;J. Sommer;H. Stenzel;K. Tittel;S. Werner;M. Wunsch;R. Beuselinck;D. Binnie;W. Cameron;D. Colling;P. Dornan;N. Konstantinidis;L. Moneta;A. Moutoussi;J. Nash;G. SanMartin;J. Sedgbeer;A. Stacey;G. Dissertori;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;C. Bowdery;T. Brodbeck;P. Colrain;G. Crawford;A. Finch;F. Foster;G. Hughes;T. Sloan;E. Whelan;M. Williams;A. Galla;A. Greene;K. Kleinknecht;G. Quast;J. Raab;B. Renk;H. Sander;R. Wanke;C. Zeitnitz;J. Aubert;A. Bencheikh;C. Benchouk;A. Bonissent;G. Bujosa;D. Calvet;J. Carr;C. Diaconu;F. Etienne;M. Thulasidas;D. Nicod;P. Payre;D. Rousseau;M. Talby;I. Abt;R. Assmann;C. Bauer;W. Blum;D. Brown;H. Dietl;F. Dydak;G. Ganis;C. Gotzhein;K. Jakobs;H. Kroha;G. Lutjens;G. Lutz;W. Manner;H. Moser;R. Richter;A. RosadoSchlosser;S. Schael;R. Settles;H. Seywerd;U. Stierlin;R. StDenis;G. Wolf;R. Alemany;J. Boucrot;O. Callot;A. Cordier;F. Courault;M. Davier;L. Duflot;J. Grivaz;P. Heusse;M. Jacquet;D. Kim;F. LeDiberder;J. Lefrancois;A. Lutz;G. Musolino;I. Nikolic;H. Park;I. Park;M. Schune;S. Simion;J. Veillet;I. Videau;D. Abbaneo;P. Azzurri;G. Bagliesi;G. Batignani;S. Bettarini;C. Bozzi;G. Calderini;M. Carpinelli;M. Ciocci;V. Ciulli;R. DellOrso;R. Fantechi;I. Ferrante;L. Foa;F. Forti;A. Giassi;M. Giorgi;A. Gregorio;F. Ligabue;A. Lusiani;P. Marrocchesi;A. Messineo;G. Rizzo;G. Sanguinetti;A. Sciaba;P. Spagnolo;J. Steinberger;R. Tenchini;G. Tonelli;G. Triggiani;C. Vannini;P. Verdini;J. Walsh;A. Betteridge;G. Blair;L. Bryant;F. Cerutti;Y. Gao;M. Green;D. Johnson;T. Medcalf;L. Mir;P. Perrodo;J. Strong;V. Bertin;D. Botterill;R. Clifft;T. Edgecock;S. Haywood;M. Edwards;P. Maley;P. Norton;J. Thompson;B. BlochDevaux;P. Colas;H. Duarte;S. Emery;W. Kozanecki;E. Lancon;M. Lemaire;E. Locci;B. Marx;P. Perez;J. Rander;J. Renardy;A. Rosowsky;A. Roussarie;J. Schuller;J. Schwindling;D. SiMohand;A. Trabelsi;B. Vallage;R. Johnson;H. Kim;A. Litke;M. McNeil;G. Taylor;A. Beddall;C. Booth;R. Boswell;S. Cartwright;F. Combley;I. Dawson;A. Koksal;M. Letho;W. Newton;C. Rankin;L. Thompson;A. Bohrer;S. Brandt;G. Cowan;E. Feigl;C. Grupen;G. Lutters;J. MinguetRodriguez;F. Rivera;P. Saraiva;L. Smolik;F. Stephan;M. Apollonio;L. Bosisio;R. DellaMarina;G. Giannini;G. Gobbo;F. Ragusa;J. Rothberg;S. Wasserbaech;S. Armstrong;L. Bellantoni;P. Elmer;Z. Feng;D. Ferguson;Y. Gao;S. Gonzalez;J. Grahl;J. Harton;O. Hayes;H. Hu;P. McNamara;J. Nachtman;W. Orejudos;Y. Pan;Y. Saadi;M. Schmitt;I. Scott;V. Sharma;J. Turk;A. Walsh;S. Wu;X. Wu;J. Yamartino;M. Zheng;G. Zobernig

1996

Abstract

Earlier measurements at LEP of isolated hard photons in hadronic Z decays, attributed to radiation from primary quark pairs, have been extended in the ALEPH experiment to include hard photon production inside hadron jets. Events are selected where all particles combine democratically to form hadron jets, one of which contains a photon with a fractional energy z greater than or equal to 0.7. After statistical subtraction of non-prompt photons, the quark-to-photon fragmentation function, D(z), is extracted directly from the measured 2-jet rate. By taking into account the perturbative contributions to D(z) obtained from an O(alpha alpha(s)) QCD calculation, the unknown non-perturbative component of D(z) is then determined at high z. Provided due account is taken of hadronization effects near z = 1, a good description of the other event topologies is then found.

Scheda breve

Scheda completa

Scheda completa (DC)

	Settori scientifico-disciplinari dell'articolo
	
				Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
			
	Data di pubblicazione
	
				1996
			
	Rivista in ANCE
	
				ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS
			
	DOI
	
				https://dx.doi.org/10.1007/s002880050037
			
	Tipologia
	
				Article (author)
			
	Appare nelle tipologie:
	
				01 - Articolo su periodico

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