Measurement of the W-pair cross-section and of the W mass in e(+)e(-)
interactions at 172 GeV

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

Measurement of the W-pair cross-section and of the W mass in e(+)e(-) interactions at 172 GeV

Authors: P Abreu Adam, W Adye, T Adzic, P Ajinenko, I and Alekseev, GD Alemany, R Allport, PP Almehed, S Amaldi, U and Amato, S Andersson, P Andreazza, A Antilogus, P and Apel, WD Arnoud, Y Asman, B Augustin, JE Augustinus, A and Baillon, P Bambade, P Barao, F Barbiellier, M Becks, KH Begalli, M Beilliere, P Belokopytov, Y Belous, K and Benvenuti, AC Berat, C Berggren, M Bertini, D Bertrand, D Besancon, M Bianchi, F Bigi, M Bilenky, MS and Billoir, P Bizouard, MA Bloch, D Blume, M Bonesini, M and Bonivento, W Boonekamp, M Booth, PSL Borgland, AW and Borisov, G Bosio, C Botner, O Boudinov, E Bouquet, B and Bourdarios, C Bowcock, TJV BOzovic, I Bozzo, M and Branchini, P Brand, KD Brenke, T Brenner, RA Brown, R and Bruckman, P Brunet, JM Bugge, L Buran, T and Burgsmueller, T Buschmann, P Cabrera, S Caccia, M Calvi, M Rozas, AJC Camporesi, T Canale, V Canepa, M and Carena, F Carroll, L Caso, C Gimenez, MVC Cattai, A and Cavallo, FR Cerruti, C Chaboud, V Chalanda, N and Charpentier, P Chaussard, L Checchia, P Chelkov, GA and Chen, M Chierici, R Chliapnikov, P Chochula, P and Chorowicz, V Chudoba, J Cindro, V Collins, P Colomer, M and Contri, R Cortina, E Cosme, G Cossutti, F Cowell, JH and Crawley, HB Crennell, D Crosetti, G Maestro, JC and Czellar, S Dalmagne, B Damgaard, G Dauncey, PD and Davenport, M Da Silva, W Deghorain, A Della Ricca, G and Delpierre, P Demaria, N De Angelis, A De Boer, W De Brabandere, S De Clercq, C De la Vaissiere, C De Lotto, B and De Min, A De Paula, L Dijkstra, H Di Ciaccio, L Di Diodato, A Djannati, A Dolbeau, J Doroba, K Dracos, M and Drees, J Drees, KA Dris, M Duperrin, A Durand, JD and Edsall, D Ehret, R Eigen, G Ekelof, T Ekspong, G and Ellert, M Elsing, M Engel, JP Erzen, B Santo, ME and Falk, E Fanourakis, G Fassouliotis, D Fayot, J Feindt, FM Ferrari, P Ferrer, A Fichet, S Firestone, A and Fischer, PA Flagmeyer, U Foeth, H Fokitis, E Fontanelli, F Formenti, F Franek, B Frodesen, AG Fruhwirth, R and Fulda-Quenzer, F Fuster, J Galloni, A Gamba, D and Gandelman, M Garcia, C Garcia, J Gaspar, C Gaspar, M and Gasparini, U Gavillet, P Gazis, EN Gele, D Gerber, JP and Ghodbane, N Glege, F Gokieli, R Golob, B Goncalves, P Caballero, IG Gopal, G Gorn, L Gorski, M Gouz, Y and Gracco, V Grahl, J Graziani, E Green, C Grefrath, A and Gris, P Grosdidier, G Grzelak, K Gunther, M Guy, J and Hahn, F Hahn, S Haider, S Hajduk, Z Hallgren, A and Hamacher, K Harris, FJ Hedberg, V Heising, S Henriques, R Hernandez, JJ Herquet, P Herr, H Hessing, TL and Heuser, JM Higon, E Holmgren, SO Holt, PJ Holthuizen, D and Hoorelbeke, S Houlden, M Hrubec, J Huet, K and Hultqvist, K Jackson, JN Jacobsson, R Jalocha, P Janik, R Jarlskog, C Jarlskog, G Jarry, P Jean-Marie, B and Johansson, EK Jonsson, L Jonsson, P Joram, C Juillot, P and Kapusta, F Karafasoulis, K Katsanevas, S Katsoufis, EC and Keranen, R Khomenko, BA Khovanski, NN King, B Kjaer, NJ Klapp, O Klein, H Kluit, P Knoblauch, D and Kokkinias, P Koratzinos, M Korcyl, K Kourkoumelis, C and Kouznetsov, O Krammer, M Kreuter, C Kronkvist, I and Krumstein, Z Kubinec, P Kucewicz, W Kurvinen, K Lacasta, C Lamsa, JW Lanceri, L Lane, DW Langefeld, P Lapin, V Laugier, JP Lauhakangas, R Leder, G Ledroit, F and Lefebure, V Legan, CK Leisos, A Leitner, R Lemonne, J and Lenzen, G Lepeltier, V Lesiak, T Lethuillier, M and Libby, J Liko, D Lipniacka, A Lippi, I Loerstad, B and Loken, JG Lopes, JH Lopez, JM Loukas, D Lutz, P and Lyons, L MacNaughton, J Mahon, JR Maio, A Malek, A and Malmgren, TGM Malychev, V Mandl, F Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A and Martinez-Rivero, C Martinez-Vidal, F Garcia, SMI and Matorras, F Matteuzzi, C Matthiae, G Mazzucato, F Mc Cubbin, M Mc Kay, R Mc Nulty, R Mc Pherson, G Medbo, J and Meroni, C Meyer, WT Miagkov, A Michelotto, M and Migliore, E Mirabito, L Mitaroff, WA Mjorenmark, U Moa, T Moeller, R Moenig, K Monge, ME Moreau, X and Morettini, P Muenich, K Mulders, M Mundim, LM Murray, WJ and Muryn, B Myatt, G Myklebust, T Naraghi, F Navarria, FL Navas, S Nawrocki, K Negri, P Nemecek, S Neufeld, N Neumann, W Neumeister, N Nicolaidou, R Nielsen, BS and Nieuwenhuizen, M Nikolaenko, V Nikolenko, M Miss, P and Nomerotski, A Normand, A Nygren, A Oberschulte-Beckmann, W and Obraztsov, V Olshevski, AG Onofre, A Orava, R Orazi, G Ortuno, S Osterberg, K Ouraou, A Paganini, P and Paganoni, M Paiano, S Pain, R Paiva, R Palka, H and Papadopoulou, TD Papageorgiou, K Pape, L Parkes, C and Parodi, F Parzefall, U Passeri, A Pegoraro, M Peralta, L and Pernegger, H Pernicka, M Perrotta, A Petridou, C and Petrolini, A Philips, HT Piana, G Pierre, F Pimenta, M and Piotto, E Podobnik, T Podobrin, O Pol, ME Polok, G and Poropat, P Pozdniakov, V Privitera, P Pukhaeva, N and Pullia, A Radojicic, D Ragazzi, S Rahmani, H Rames, J and Ratoff, PN Read, AL Rebecchi, P Redaelli, NG Regler, M Reid, D Reinhardt, R Renton, PB Resvanis, LK and Richard, F Ridky, J Rinaudo, G Rohne, O Romero, A and Ronchese, P Rosenberg, EI Rosinsky, P Roudeau, P and Rovelli, T Ruhlmann-Kleider, V Ruiz, A Saarikko, H and Sacquin, Y Sadovsky, A Sajot, G Salt, J Sampsonidis, D and Sannino, M Schneider, H Schwickerath, U Schyns, MAE and Scuri, F Seager, P Sedykh, Y Segar, AM Sekulin, R and Shellard, RC Sheridan, A Silvestre, R Simonetto, F and Sisakian, AN Skaali, TB Smadja, G Smirnov, N Smirnova, O and Smith, GR Solovianov, O Stanescu, C Stanic, S and Stapnes, S Stavitski, I Stevenson, K Stocchi, A Strauss, J Strub, R Stugu, B Szczekowski, M Szeptycka, M and Tabarelli, T Tegenfeldt, F Terranova, F Thomas, J and Tilquin, A Timmermans, J Tkatchev, LG Todorov, T and TOdorova, S Toet, DZ Tomaradze, A Tome, B Tonazzo, A and Tortora, L Transtromer, G Treille, D Tristram, G and Trombini, A Troncon, C Tsirou, A Turluer, ML Tyapkin, IA and Tyndel, M Tzamarias, S Ueberschaer, B Ullaland, O and Uvarov, V Valenti, G Vallazza, E Velde, CV Van Apeldoorn, GW Van Dam, P Van Doninck, WK Van Eldik, J and Van Lysebetten, A Van Vulpen, I Vassilopoulos, N Vegni, G and Ventura, L Venus, W Verbeure, F Verlato, M and Vertogradov, LS Verzi, V Vilanova, D Vincent, P and Vishnevsky, N Vitale, L Vlasov, E Vodopyanov, AS Vrba, V and Wahlen, H Walck, C Weiser, C Wetherell, AM Wicke, D and Wickens, JH Wilkinson, GR Williams, WSC Winter, M and Witek, M Wlodek, T Wolf, G Yi, J Yushchenko, O and Zaitsev, A Zalewska, A Zalewski, P Zavrtanik, D and Zevgolatakos, E Zimin, NI Zucchelli, GC Zumerle, G and DELPHI Collaboration
Publication date: 1 January 1998
Publisher

Abstract

From a data sample of 9.98 pb(-1) integrated luminosity, collected by DELPHI at a centre-of-mass energy of 172 GeV, 118 events were selected as W-pair candidates. From these, the branching fraction Br(W –> q (q) over bar) was measured to be 0.660(-0.037)(+0.036)(stat.) +/- 0.009(syst.) and the cross-section for the doubly resonant process e(+)e(-) –> W+W- to be 11.58(-1.35)(+1.44)(stat.) +/- 0.32(syst.) pb. The mass of the W boson, obtained from direct reconstruction of the invariant mass of the fermion pairs in the decays WW –> lvq (q) over bar and WW –> q (q) over bar q (q) over bar, was determined to be m(w) = 80.22 +/- 0.41(stat.) +/- 0.04(syst.) +/- 0.05(int.) +/- 0.03(LEP) GeV/c(2), where “int.” denotes the uncertainty from interconnection effects like colour reconnection and Bose-Einstein interference. Combined with the W mass obtained from the cross-sections measured by DELPHI at threshold, a value of m(w) = 80.33 +/- 0.30(stat.) +/- 0.05(syst.) +/- 0.03(int.) +/- 0.03(LEP) GeV/c(2) was found

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