Guy Wilkinson: Publications

π^±, K^±, p and p̄ production in Z⁰ → qq̄, Z⁰ bb̄, Z⁰ → uū, dd̄, ss̄

European Physical Journal C 5:4 (1998) 585-620

Authors:

Abstract:

The DELPHI experiment at LEP uses Ring Imaging Cherenkov detectors for particle identification. The good understanding of the RICH detectors allows the identification of charged pions, kaons and protons, covering the full momentum range from 0.7 < p < 45.6GeV/c. The π±, K±, p and p̄ normalised production rates, their differential cross sections, multiplicities and the maxima ξ*p of_the ξp = ln (1/Xp) distributions are measured for three event samples Z0 → qq̄, Z0 → bb̄, Z0 → uū, dd̄, ss̄, selected from ∼ 1 400 000 Z0 decays collected by DELPHI in 1994. The results are compared to the predictions of the JETSET string fragmentation model and the HERWIG cluster fragmentation model. The Modified Leading Logarithm Approximation with Local Parton-Hadron Duality is tested. The ξ*p dependence on the primary quark flavour is investigated and quantified for the different particle distributions. The π± , K±, p and p̄ multiplicities are measured with precisions from ±4% to ±6%. Forche Z0 → qq̄, and Z0 → bb̄, event samples, these improve on previous measurements. The π±, K±, p and p̄ multiplicities for Z0 → uū, dd̄, ss̄ are presented for the first time.

Final energy calibration at LEP 1

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS 66 (1998) 59-62

More details from the publisher

Measurement of |V_cs| using W decays at LEP2

PHYSICS LETTERS B 439:1-2 (1998) 209-224

Authors:

P Abreu, W Adam, T Adye, P Adzic, I Ajinenko, GD Alekseev, R Alemany, PP Allport, S Almehed, U Amaldi, S Amato, EG Anassontzis, P Andersson, A Andreazza, P Antilogus, WD Apel, Y Arnoud, B Asman, JE Augustin, A Augustinus, P Baillon, P Bambade, F Barao, G Barbiellini, R Barbier, DY Bardin, G Barker, A Baroncelli, M Battaglia, M Baubillier, KH Becks, M Begalli, P Beilliere, Y Belokopytov, K Belous, AC Benvenuti, C Berat, M Berggren, D Bertini, D Bertrand, M Besancon, F Bianchi, M Bigi, MS Bilenky, MA Bizouard, D Bloch, M Bonesini, W Bonivento, M Boonekamp, PSL Booth, AW Borgland, G Borisov, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, TJV Bowcock, I Boyko, I Bozovic, M Bozzo, P Branchini, T Brenke, RA Brenner, P Bruckman, JM Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, S Cabrera, M Caccia, M Calvi, AJC Rozas, T Camporesi, V Canale, M Canepa, F Carena, L Carroll, C Caso, MVC Gimenez, A Cattai, FR Cavallo, C Cerruti, V Chabaud, M Chapkin, P Charpentier, L Chaussard, P Checchia, GA Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, J Chudoba, P Collins, M Colomer, R Contri, E Cortina, G Cosme, F Cossutti, JH Cowell, HB Crawley, D Crennell, G Crosetti, JC Maestro, S Czellar, B Dalmagne, G Damgaard, M Davenport, W Da Silva, A Deghorain, G Della Ricca, P Delpierre, N Demaria, A De Angelis, W De Boer, S De Brabandere, C De Clercq, B De Lotto, A De Min, L De Paula, H Dijkstra, L Di Ciaccio, A Di Diodato, A Djannati, J Dolbeau, K Doroba, M Dracos, J Drees, KA Drees, M Dris, A Duperrin, JD Durand, R Ehret, G Eigen, T Ekelof, G Ekspong, M Ellert, M Elsing, JP Engel, B Erzen, ME Santo, E Falk, G Fanourakis, D Fassouliotis, J Fayot, M Feindt, A Fenyuk, P Ferrari, A Ferrer, S Fichet, A Firestone, PA Fischer, U Flagmeyer, H Foeth, E Fokitis, F Fontanelli, B Franek, AG Frodesen, R Fruhwirth, F Fulda-Quenzer, J Fuster, A Galloni, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, M Gaspar, U Gasparini, P Gavillet, EN Gazis, D Gele, JP Gerber, N Ghodbane, I Gil, F Glege, R Gokieli, B Golob, P Goncalves, IG Caballero, G Gopal, L Gorn, M Gorski, Y Gouz, V Gracco, J Grahl, E Graziani, C Green, A Grefrath, P Gris, K Grzelak, M Gunther, J Guy, F Hahn, S Hahn, S Haider, A Hallgren, K Hamacher, FJ Harris, V Hedberg, S Heising, R Henriques, JJ Hernandez, P Herquet, H Herr, TL Hessing, JM Heuser, E Higon, SO Holmgren, PJ Holt, D Holthuizen, S Hoorelbeke, M Houlden, J Hrubec, K Huet, K Hultqvist, JN Jackson, R Jacobsson, P Jalocha, R Janik, C Jarlskog, G Jarlskog, P Jarry, B Jean-Marie, EK Johansson, P Jonsson, C Joram, P Juillot, F Kapusta, K Karafasoulis, S Katsanevas, EC Katsoufis, R Keranen, BA Khomenko, NN Khovanski, A Kiiskinen, B King, NJ Kjaer, O Klapp, H Klein, P Kluit, D Knoblauch, P Kokkinias, M Koratzinos, C Kourkoumelis, O Kouznetsov, M Krammer, C Kreuter, E Kriznic, J Krstic, Z Krumstein, P Kubinec, W Kucewicz, K Kurvinen, JW Lamsa, L Lanceri, DW Lane, P Langefeld, V Lapin, JP Laugier, R Lauhakangas, F Ledroit, V Lefebure, L Leinonen, A Leisos, R Leitner, J Lemonne, G Lenzen, V Lepeltier, T Lesiak, M Lethuillier, J Libby, D Liko, A Lipniacka, I Lippi, B Loerstad, JG Loken, JH Lopes, JM Lopez, R Lopez-Fernandez, D Loukas, P Lutz, L Lyons, J MacNaughton, JR Mahon, A Maio, A Malek, TGM Malmgren, V Malychev, F Mandl, J Marco, R Marco, B Marechal, M Margoni, JC Marin, C Mariotti, A Markou, C Martinez-Rivero, F Martinez-Vidal, SM i Garcia, F Matorras, C Matteuzzi, G Matthiae, F Mazzucato, M Mazzucato, M Mc Cubbin, R Mc Kay, R Mc Nulty, G Mc Pherson, C Meroni, A Miagkov, E Migliore, L Mirabito, WA Mitaroff, U Mjoernmark, T Moa, R Moeller, K Moenig, MR Monge, X Moreau, P Morettini, G Morton, K Muenich, M Mulders, C Mulet-Marquis, R Muresan, WJ Murray, B Muryn, G Myatt, T Myklebust, F Naraghi, FL Navarria, S Navas, K Nawrocki, P Negri, S Nemecek, N Neufeld, W Neumann, N Neumeister, R Nicolaidou, BS Nielsen, M Nieuwenhuizen, V Nikolaenko, M Nikolenko, V Nomokonov, A Normand, A Nygren, V Obraztsov, AG Olshevski, A Onofre, R Orava, G Orazi, K Osterberg, A Ouraou, P Paganini, M Paganoni, S Paiano, R Pain, R Paiva, J Palacios, H Palka, TD Papadopoulou, K Papageorgiou, L Pape, C Parkes, F Parodi, U Parzefall, A Passeri, M Pegoraro, L Peralta, M Pernicka, A Perrotta, C Petridou, A Petrolini, HT Phillips, G Piana, F Pierre, M Pimenta, E Piotto, T Podobnik, ME Pol, G Polok, P Poropat, V Pozdniakov, P Privitera, N Pukhaeva, A Pullia, D Radojicic, S Ragazzi, H Rahmani, D Rakoczy, J Rames, PN Ratoff, AL Read, P Rebecchi, NG Redaelli, M Regler, D Reid, R Reinhardt, PB Renton, LK Resvanis, F Richard, J Ridky, G Rinaudo, O Rohne, A Romero, P Ronchese, EI Rosenberg, P Rosinsky, P Roudeau, T Rovelli, V Ruhlmann-Kleider, A Ruiz, H Saarikko, Y Sacquin, A Sadovsky, G Sajot, J Salt, D Sampsonidis, M Sannino, H Schneider, P Schwemling, U Schwickerath, MAE Schyns, F Scuri, P Seager, Y Sedykh, AM Segar, R Sekulin, RC Shellard, A Sheridan, R Silvestre, L Simard, F Simonetto, AN Sisakian, TB Skaali, G Smadja, N Smirnov, O Smirnova, GR Smith, O Solovianov, A Sopczak, R Sosnowski, T Spassov, E Spiriti, P Sponholz, S Squarcia, D Stampfer, C Stanescu, S Stanic, S Stapnes, K Stevenson, A Stocchi, J Strauss, R Strub, B Stugu, M Szczekowski, M Szeptycka, T Tabarelli, F Tegenfeldt, F Terranova, J Thomas, A Tilquin, J Timmermans, LG Tkatchev, T Todorov, S Todorova, DZ Toet, A Tomaradze, B Tome, A Tonazzo, L Tortora, G Transtromer, D Treille, G Tristram, A Trombini, C Troncon, A Tsirou, ML Turluer, IA Tyapkin, S Tzamarias, B Ueberschaer, O Ullaland, V Uvarov, G Valenti, E Vallazza, GW Van Apeldoorn, P Van Dam, J Van Eldik, A Van Lysebetten, I Van Vulpen, N Vassilopoulos, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, LS Vertogradov, V Verzi, D Vilanova, L Vitale, E Vlasov, AS Vodopyanov, G Voulgaris, V Vrba, H Wahlen, C Walck, C Weiser, AM Wetherell, D Wicke, JH Wickens, GR Wilkinson, M Winter, M Witek, T Wlodek, G Wolf, J Yi, JY Yushchenko, A Zaitsev, A Zalewska, P Zalewski, D Zavrtanik, E Zevgolatakos, NI Zimin, GC Zucchelli, G Zumerle

More details from the publisher

π^±, K^±, p and (p)over-bar production in Z⁰→q(q)over-bar, Z⁰→b(b)over-bar, Z⁰→u(u)over-bar,d(d)over-bar,s(s)over-bar

EUROPEAN PHYSICAL JOURNAL C 5:4 (1998) 585-620

Authors:

P Abreu, W Adam, T Adye, P Adzic, I Ajinenko, GD Alekseev, R Alemany, PP Allport, S Almehed, U Amaldi, S Amato, EG Anassontzis, P Andersson, A Andreazza, P Antilogus, WD Apel, Y Arnoud, B Asman, JE Augustin, A Augustinus, P Baillon, P Bambade, F Barao, G Barbiellini, R Barbier, DY Bardin, G Barker, A Baroncelli, M Battaglia, M Baubillier, KH Becks, M Begalli, P Beilliere, Y Belokopytov, K Belous, AC Benvenuti, C Berat, M Berggren, D Bertini, D Bertrand, M Besancon, F Bianchi, M Bigi, MS Bilenky, MA Bizouard, D Bloch, M Bonesini, W Bonivento, M Boonekamp, PSL Booth, AW Borgland, G Borisov, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, TJV Bowcock, I Boyko, I Bozovic, M Bozzo, P Branchini, T Brenke, RA Brenner, P Bruckman, JM Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, S Cabrera, M Caccia, M Calvi, AJC Rozas, T Camporesi, V Canale, M Canepa, F Carena, L Carroll, C Caso, MVC Gimenez, A Cattai, FR Cavallo, C Cerruti, V Chabaud, P Charpentier, L Chaussard, P Checchia, GA Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, J Chudoba, P Collins, M Colomer, R Contri, E Cortina, G Cosme, F Cossutti, JH Cowell, HB Crawley, D Crennell, G Crosetti, JC Maestro, S Czellar, B Dalmagne, G Damgaard, M Davenport, W Da Silva, A Deghorain, G Della Ricca, P Delpierre, N Demaria, A De Angelis, W De Boer, S De Brabandere, C De Clerq, B De Lotto, A De Min, L De Paula, H Dijkstra, L Di Ciaccio, A Di Diodato, A Djannati, J Dolbeau, K Doroba, M Dracos, J Drees, KA Drees, M Dris, A Duperrin, JD Durand, R Ehret, G Eigen, T Ekelof, G Ekspong, M Ellert, M Elsing, JP Engel, B Erzen, ME Santo, E Falk, G Fanourakis, D Fassouliotis, J Fayot, M Feindt, P Ferrari, A Ferrer, S Fichet, A Firestone, PA Fischer, U Flagmeyer, H Foeth, E Fokitis, F Fontanelli, B Franek, AG Frodesen, R Fruhwirth, F Fulda-Quenzer, J Fuster, A Galloni, D Gamba, M Gandelman, C Garcia, J Garcia, C Gaspar, M Gaspar, U Gasparini, P Gavillet, EN Gazis, D Gele, JP Gerber, L Gerdyukov, N Ghodbane, I Gil, F Glege, R Gokieli, B Golob, P Goncalves, IG Caballero, G Gopal, L Gorn, M Gorski, Y Gouz, V Gracco, J Grahl, E Graziani, C Green, A Grefrath, P Gris, K Grzelak, M Gunther, J Guy, F Hahn, S Hahn, S Haider, A Hallgren, K Hamacher, FJ Harris, V Hedberg, S Heising, R Henriques, JJ Hernandez, P Herquet, H Herr, TL Hessing, JM Heuser, E Higon, SO Holmgren, PJ Holt, D Holthuizen, S Hoorelbeke, M Houlden, K Huet, K Hultqvist, JN Jackson, R Jacobsson, P Jalocha, R Janik, C Jarlskog, G Jarlskog, P Jarry, B Jean-Marie, EK Johansson, P Jonsson, C Joram, P Juillot, F Kapusta, K Karafasoulis, S Katsanevas, EC Katsoufis, R Keranen, BA Khomenko, NN Khovanski, A Kiiskinen, B King, NJ Kjaer, O Klapp, H Klein, P Kluit, D Knoblauch, P Kokkinias, M Koratzinos, C Kourkoumelis, O Kouznetsov, M Krammer, C Kreuter, E Kriznic, Z Krumstein, P Kubinec, W Kucewicz, K Kurvinen, JW Lamsa, L Lanceri, DW Lane, P Langefeld, V Lapin, JP Laugier, R Lauhakangas, G Leder, F Ledroit, V Lefebure, L Leinonen, A Leisos, R Leitner, J Lemonne, G Lenzen, V Lepeltier, T Lesiak, M Lethuillier, J Libby, D Liko, A Lipniacka, I Lippi, B Loerstad, JG Loken, JH Lopes, JM Lopez, R Lopez-Fernandez, D Loukas, P Lutz, L Lyons, J MacNaughton, JR Mahon, A Maio, A Malek, TGM Malmgren, V Malychev, F Mandl, J Marco, R Marco, B Marechal, M Margoni, JC Marin, C Mariotti, A Markou, C Martinez-Rivero, F Martinez-Vidal, SM Garcia, F Matorras, C Matteuzzi, G Matthiae, F Mazzucato, M Mazzucato, M McCubbin, R McKay, R McNulty, G McPherson, C Meroni, WT Meyer, A Miagkov, E Migliore, L Mirabito, WA Mitaroff, U Mjoernmark, T Moa, R Moeller, K Moenig, MR Monge, X Moreau, P Morettini, G Morton, K Muenich, M Mulders, C Mulet-Marquis, R Muresan, WJ Murray, B Muryn, G Myatt, T Myklebust, F Naraghi, FL Navarria, S Navas, K Nawrocki, P Negri, S Nemecek, N Neufeld, W Neumann, N Neumeister, R Nicolaidou, BS Nielsen, M Nieuwenhuizen, V Nikolaenko, M Nikolenko, V Nomokonov, A Normand, A Nygren, V Obraztsov, AG Olshevski, A Onofre, R Orava, G Orazi, K Osterberg, A Ouraou, P Paganini, M Paganoni, S Paiano, R Pain, R Paiva, J Palacios, H Palka, TD Papadopoulou, K Papageorgiou, L Pape, C Parkes, F Parodi, U Parzefall, A Passeri, M Pegoraro, L Peralta, M Pernicka, A Perrotta, C Petridou, A Petrolini, HT Phillips, G Piana, F Pierre, M Pimenta, E Piotto, T Podobnik, ME Pol, G Polok, P Poropat, V Pozdniakov, P Privitera, N Pukhaeva, A Pullia, D Radojicic, S Ragazzi, H Rahmani, D Rakoczy, J Rames, PN Ratoff, AL Read, P Rebecchi, NG Redaelli, M Regler, D Reid, R Reinhardt, PB Renton, LK Resvanis, F Richard, J Ridky, G Rinaudo, O Rohne, A Romero, P Ronchese, EI Rosenberg, P Rosinsky, P Roudeau, T Rovelli, V Ruhlmann-Kleider, A Ruiz, H Saarikko, Y Sacquin, A Sadovsky, G Sajot, J Salt, D Sampsonidis, M Sannino, H Schneider, P Schwemling, U Schwickerath, MAE Schyns, F Scuri, P Seager, Y Sedykh, AM SEgar, R Sekulin, V Senko, RC Shellard, A Sheridan, R Silvestre, L Simard, F Simonetto, AN Sisakian, TB Skaali, G Smadja, O Smirnova, GR Smith, O Solovianov, A Sopczak, R Sosnowski, T Spassov, E Spiriti, P Sponholz, S Squarcia, D Stampfer, C Stanescu, S Stanic, S Stapnes, K Stevenson, A Stocchi, J Strauss, R Strub, B Stugu, M Szczekowski, M Szeptycka, T Tabarelli, F Tegenfeldt, F Terranova, J Thomas, A Tilquin, J Timmermans, LG Tkatchev, T Todorov, S Todorova, DZ Toet, A Tomaradze, B Tome, A Tonazzo, L Tortora, G Transtromer, D Treille, G Tristram, A Trombini, C Troncon, A Tsirou, ML Turluer, IA Tyapkin, S Tzamarias, B Ueberschaer, O Ullaland, V Uvarov, G Valenti, E Vallazza, C Vander Velde, GW Van Apeldoorn, P Van Dam, WK Van Doninck, J Van Eldik, A Van Lysebetten, I Van Vulpen, N Vassilopoulos, G Vegni, L Ventura, W Venus, F Verbeure, M Verlato, LS Vertogradov, V Verzi, D Vilanova, N Vishnevsky, L Vitale, E Vlasov, AS Vodopyanov, G Voulgaris, V Vrba, H Wahlen, C Walck, C Weiser, AM Wetherell, D Wicke, JH Wickens, GR Wilkinson, M Winter, M Witek, T Wlodek, G Wolf, J Yi, O Yushchenko, A Zaitsev, A Zalewska, P Zalewski, D Zavrtanik, E Zevgolatakos, NI Zimin, GC Zucchelli, G Zumerle

More details from the publisher

Measurement of the triple gluon vertex from double quark tagged 4-jet events

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 414:3-4 (1997) 401-418

Authors:

P Abreu, W Adam, T Adye, P Adzic, GD Alekseev, R Alemany, PP Allport, S Almehed, U Amaldi, S Amato, P Andersson, A Andreazza, P Antilogus, WD Apel, Y Arnoud, B Åsman, JE Augustin, A Augustinus, P Baillon, P Bambade, F Barao, M Barbi, G Barbiellini, DY Bardin, G Barker, A Baroncelli, O Barring, MJ Bates, M Battaglia, M Baubillier, J Baudot, KH Becks, M Begalli, P Beilliere, Y Belokopytov, AC Benvenuti, C Berat, M Berggren, D Bertini, D Bertrand, M Besancon, F Bianchi, M Bigi, MS Bilenky, P Billoir, MA Bizouard, D Bloch, M Blume, M Bonesini, W Bonivento, M Boonekamp, PSL Booth, AW Borgland, G Borisov, C Bosio, O Botner, E Boudinov, B Bouquet, C Bourdarios, TJV Bowcock, M Bozzo, P Branchini, KD Brand, T Brenke, RA Brenner, RCA Brown, P Bruckman, JM Brunet, L Bugge, T Buran, T Burgsmueller, P Buschmann, S Cabrera, M Caccia, M Calvi, AJ Camacho Rozas, T Camporesi, V Canale, M Canepa, F Carena, L Carroll, C Caso, MV Castillo Gimenez, A Cattai, FR Cavallo, V Chabaud, P Charpentier, L Chaussard, P Checchia, GA Chelkov, M Chen, R Chierici, P Chliapnikov, P Chochula, V Chorowicz, J Chudoba, V Cindro, P Collins, M Colomer, R Contri

Abstract:

The 4-jet events collected by the DELPHI experiment at LEP1 in 1992, 1993 and 1994 are analysed to determine the contribution of the triple-gluon vertex. Two of the four jets are tagged as jets from b-or c-quarks using lifetime and lepton transverse momentum information. The 4-jet contributions from double-gluon brems Strahlung, the triple-gluon vertex, and secondary quark-antiquark pair production then yield significantly different two-dimensional distributions in the generalized Nachtmann Reiter angle versus the opening angle of the two secondary jets. These distributions are used to fit CA/CF, the ratio of the coupling strength of the triple-gluon vertex to that of gluon bremsstrahlung, and NC/NA, the ratio of the number of quark colours to the number of gluons, giving CA/CF = 2.51 ± 0.28 and NC/NA = 0.38 ∓ 0.10 in agreement with the values expected from QCD: CA/CF= 9/4 = 2.25 and NC/NA = 3/8 = 0.375. © 1997 Published by Elsevier Science B.V.

More details from the publisher

More details

Guy Wilkinson

Sub department

π^±, K^±, p and p̄ production in Z⁰ → qq̄, Z⁰ bb̄, Z⁰ → uū, dd̄, ss̄

Authors:

Abstract:

Final energy calibration at LEP 1

Measurement of |V_cs| using W decays at LEP2

Authors:

π^±, K^±, p and (p)over-bar production in Z⁰→q(q)over-bar, Z⁰→b(b)over-bar, Z⁰→u(u)over-bar,d(d)over-bar,s(s)over-bar

Authors:

Measurement of the triple gluon vertex from double quark tagged 4-jet events

Authors:

Abstract:

FIND US

CONTACT US

Guy Wilkinson

Sub department

Research groups

π±, K±, p and p̄ production in Z0 → qq̄, Z0 bb̄, Z0 → uū, dd̄, ss̄

Authors:

Abstract:

Final energy calibration at LEP 1

Measurement of |Vcs| using W decays at LEP2

Authors:

π±, K±, p and (p)over-bar production in Z0→q(q)over-bar, Z0→b(b)over-bar, Z0→u(u)over-bar,d(d)over-bar,s(s)over-bar

Authors:

Measurement of the triple gluon vertex from double quark tagged 4-jet events

Authors:

Abstract:

π^±, K^±, p and p̄ production in Z⁰ → qq̄, Z⁰ bb̄, Z⁰ → uū, dd̄, ss̄

Measurement of |V_cs| using W decays at LEP2

π^±, K^±, p and (p)over-bar production in Z⁰→q(q)over-bar, Z⁰→b(b)over-bar, Z⁰→u(u)over-bar,d(d)over-bar,s(s)over-bar