Measurement of the Cross Section of W-boson pair production at LEP;

Achard, P; Adriani, O; Aguilar Benitez, M; Alcaraz, J; Alemanni, G; Allaby, J; Aloisio, A; Alviggi, Mg; Anderhub, H; Andreev, Vp; Anselmo, F; Arefiev, A; Azemoon, T; Aziz, T; Bagnaia, P; Bajo, A; Baksay, G; Baksay, L; Baldew, Sv; Banerjee, S; Banerjee, S; Barczyk, A; Barillere, R; Bartalini, P; Basile, M; Batalova, N; Battiston, R; Bay, A; Becattini, F; Becker, U; Behner, F; Bellucci, L; Berbeco, R; Berdugo, J; Berges, P; Bertucci, B; Betev, Bl; Biasini, M; Biglietti, M; Biland, A; Blaising, Jj; Blyth, Sc; Bobbink, Gj; Bohm, A; Boldizsar, L; Borgia, B; Bottai, S; Bourilkov, D; Bourquin, M; Braccini, S; Branson, Jg; Brochu, F; Burger, Jd; Burger, Wj; Button, A; Cai, Xd; Capell, M; Romeo, Gc; Carlino, G; Cartacci, A; Casaus, J; Cavallari, F; Cavallo, N; Cecchi, C; Cerrada, M; Chamizo, M; Chang, Yh; Chemarin, M; Chen, A; Chen, G; Chen, Gm; Chen, Hf; Chen, Hs; Chiefari, G; Cifarelli, L; Cindolo, F; Clare, I; Clare, R; Coignet, G; Colino, N; Costantini, S; de la Cruz, B; Cucciarelli, S; van Dalen, Ja; de Asmundis, R; Deglon, P; Debreczeni, J; Degre, A; Dehmelt, K; Deiters, K; della Volpe, D; Delmeire, E; Denes, P; DeNotaristefani, F; De Salvo, A; Diemoz, M; Dierckxsens, M; van Dierendonck, D; Dionisi, C; Dittmar, M; Doria, A; Dova, Mt; Duchesneau, D; Duda, M; Echenard, B; Eline, A; El Hage, A; El Mamouni, H; Engler, A; Eppling, Fj; Extermann, P; Falagan, Ma; Falciano, S; Favara, A; Fay, J; Fedin, O; Felcini, M; Ferguson, I; Fesefeldt, H; Fiandrini, E; Field, Jh; Filthaut, F; Fisher, Ph; Fisher, W; Fisk, I; Forconi, G; Freudenreich, K; Furetta, C; Galaktionov, Y; Ganguli, Sn; Garcia Abia, P; Gataullin, M; Gentile, S; Giagu, S; Gong, Zf; Grenier, G; Grimm, O; Gruenewald, Mw; Guida, Michele; Gupta, Vk; Gurtu, A; Gutay, Lj; Haas, D; Hatzifotiadou, D; Hebbeker, T; Herve, A; Hirschfelder, J; Hofer, H; Hohlmann, M; Holzner, G; Hou, Sr; Hu, Y; Jin, Bn; Jones, Lw; de Jong, P; Josa Mutuberria, I; Kaur, M; Kienzle Focacci, Mn; Kim, Jk; Kirkby, J; Kittel, W; Klimentov, A; Konig, Ac; Kopal, M; Koutsenko, V; Kraber, M; Kraemer, Rw; Kruger, A; Kunin, A; de Guevara, Pl; Laktineh, I; Landi, G; Lebeau, M; Lebedev, A; Lebrun, P; Lecomte, P; Lecoq, P; Le Coultre, P; Le Goff, Jm; Leiste, R; Levtchenko, M; Levtchenko, P; Li, C; Likhoded, S; Lin, Ch; Lin, Wt; Linde, Fl; Lista, L; Liu, Za; Lohmann, W; Longo, E; Ys, Lu; Luci, C; Luminari, L; Lustermann, W; Wg, Ma; Malgeri, L; Malinin, A; Mana, C; Mans, J; Martin, Jp; Marzano, E; Mazumdar, K; McNeil, Rr; Mele, S; Merola, L; Meschini, M; Metzger, Wj; Mihul, A; Milcent, H; Mirabelli, G; Mnich, J; Mohanty, Gb; Moulik, T; Muanza, Gs; Muijs, Ajm; Musicar, B; Musy, M; Nagy, S; Nandakumar, R; Natale, S; Napolitano, M; Nessi Tedaldi, E; Newman, H; Nisati, A; Novak, I; Nowak, H; Ofierzynski, R; Organtini, G; Pal, I; Palomares, C; Paolucci, P; Paramatti, R; Passaleva, G; Patricelli, S; Paul, T; Pauluzzi, M; Paus, C; Pauss, E; Pedace, M; Pensotti, S; Perret Gallix, D; Petersen, B; Piccolo, D; Pierella, F; Pioppi, M; Piroue, Pa; Pistolesi, E; Plyaskin, V; Pohl, M; Pojidaev, V; Pothier, J; Prokofiev, D; Quartieri, Joseph; Rahal Callot, G; Rahaman, Ma; Raics, P; Raja, N; Ramelli, R; Rancoita, Pg; Ranieri, R; Raspereza, A; Razis, P; Ren, D; Rescigno, M; Reucroft, S; Riemann, S; Riles, K; Roe, Bp; Romero, L; Rosca, A; Rosemann, C; Rosenbleck, C; Rosier Lees, S; Roth, S; Rubio, Ja; Ruggiero, G; Rykaczewski, H; Sakharov, A; Saremi, S; Sarkar, S; Salicio, J; Sanchez, E; Schafer, C; Schegelsky, V; Schopper, H; Schotanus, Dj; Sciacca, C; Servoli, L; Shevchenko, S; Shivarov, N; Shoutko, V; Shumilov, E; Shvorob, A; Son, D; Souga, C; Spillantini, P; Steuer, M; Stickland, Dp; Stoyanov, B; Straessner, A; Sudhakar, K; Sultanov, G; Sun, Lz; Sushkov, S; Suter, H; Swain, Jd; Szillasi, Z; Tang, Xw; Tarjan, P; Tauscher, L; Taylor, L; Tellili, B; Teyssier, D; Timmermans, C; Ting, Scc; Ting, Sm; Tonwar, Sc; Toth, J; Tully, C; Tung, Kl; Ulbricht, J; Valente, E; Van de Walle, Rt; Vasquez, R; Veszpremi, V; Vesztergombi, G; Vetlitsky, I; Vicinanza, D; Viertel, G; Villa, S; Vivargent, M; Vlachos, S; Vodopianov, I; Vogel, H; Vogt, H; Vorobiev, I; Vorobyov, Aa; Wadhwa, M; Wang, Q; Wang, Xl; Wang, Zm; Weber, A; Weber, M; Wilkens, H; Wynhoff, S; Xia, L; Zz, Xu; Yamamoto, J; Yang, Bz; Yang, Cg; Yang, Hj; Yang, M; Yeh, Sc; Zalite, A; Zalite, Y; Zhang, Zp; Zhao, J; Zhu, Gy; Zhu, Ry; Zhuang, Hl; Zichichi, A; Zimmermann, B; Zoller, M.

doi:10.1016/j.physletb.2004.08.060

The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 629.4 pb(-1), collected at centre-of-mass energies ranging from 189 to 209 GeV, 9834 four-fermion events with W bosons decaying into hadrons or leptons are selected. The total cross section is measured with a precision of 1.4% and agrees with the Standard Model expectation. Assuming charged-lepton universality, the branching fraction for hadronic W-boson decays is measured to be: Br(W --> hadrons) = 67.50 +/- 0.42(stat.) +/- 0.30(syst.)%, in agreement with the Standard Model. Differential cross sections as a function of the W- production angle are also measured for the semi-leptonic channels qqev and qqmuv.

Titolo:	Measurement of the Cross Section of W-boson pair production at LEP;
Autori:	Achard, P Adriani, O Aguilar Benitez, M Alcaraz, J Alemanni, G Allaby, J Aloisio, A Alviggi, MG Anderhub, H Andreev, VP Anselmo, F Arefiev, A Azemoon, T Aziz, T Bagnaia, P Bajo, A Baksay, G Baksay, L Baldew, SV Banerjee, S Banerjee, S Barczyk, A Barillere, R Bartalini, P Basile, M Batalova, N Battiston, R Bay, A Becattini, F Becker, U Behner, F Bellucci, L Berbeco, R Berdugo, J Berges, P Bertucci, B Betev, BL Biasini, M Biglietti, M Biland, A Blaising, JJ Blyth, SC Bobbink, GJ Bohm, A Boldizsar, L Borgia, B Bottai, S Bourilkov, D Bourquin, M Braccini, S Branson, JG Brochu, F Burger, JD Burger, WJ Button, A Cai, XD Capell, M Romeo, GC Carlino, G Cartacci, A Casaus, J Cavallari, F Cavallo, N Cecchi, C Cerrada, M Chamizo, M Chang, YH Chemarin, M Chen, A Chen, G Chen, GM Chen, HF Chen, HS Chiefari, G Cifarelli, L Cindolo, F Clare, I Clare, R Coignet, G Colino, N Costantini, S de la Cruz, B Cucciarelli, S van Dalen, JA de Asmundis, R Deglon, P Debreczeni, J Degre, A Dehmelt, K Deiters, K della Volpe, D Delmeire, E Denes, P DeNotaristefani, F De Salvo, A Diemoz, M Dierckxsens, M van Dierendonck, D Dionisi, C Dittmar, M Doria, A Dova, MT Duchesneau, D Duda, M Echenard, B Eline, A El Hage, A El Mamouni, H Engler, A Eppling, FJ Extermann, P Falagan, MA Falciano, S Favara, A Fay, J Fedin, O Felcini, M Ferguson, I Fesefeldt, H Fiandrini, E Field, JH Filthaut, F Fisher, PH Fisher, W Fisk, I Forconi, G Freudenreich, K Furetta, C Galaktionov, Y Ganguli, SN Garcia Abia, P Gataullin, M Gentile, S Giagu, S Gong, ZF Grenier, G Grimm, O Gruenewald, MW GUIDA, Michele Gupta, VK Gurtu, A Gutay, LJ Haas, D Hatzifotiadou, D Hebbeker, T Herve, A Hirschfelder, J Hofer, H Hohlmann, M Holzner, G Hou, SR Hu, Y Jin, BN Jones, LW de Jong, P Josa Mutuberria, I Kaur, M Kienzle Focacci, MN Kim, JK Kirkby, J Kittel, W Klimentov, A Konig, AC Kopal, M Koutsenko, V Kraber, M Kraemer, RW Kruger, A Kunin, A de Guevara, PL Laktineh, I Landi, G Lebeau, M Lebedev, A Lebrun, P Lecomte, P Lecoq, P Le Coultre, P Le Goff, JM Leiste, R Levtchenko, M Levtchenko, P Li, C Likhoded, S Lin, CH Lin, WT Linde, FL Lista, L Liu, ZA Lohmann, W Longo, E Lu, YS Luci, C Luminari, L Lustermann, W Ma, WG Malgeri, L Malinin, A Mana, C Mans, J Martin, JP Marzano, E Mazumdar, K McNeil, RR Mele, S Merola, L Meschini, M Metzger, WJ Mihul, A Milcent, H Mirabelli, G Mnich, J Mohanty, GB Moulik, T Muanza, GS Muijs, AJM Musicar, B Musy, M Nagy, S Nandakumar, R Natale, S Napolitano, M Nessi Tedaldi, E Newman, H Nisati, A Novak, I Nowak, H Ofierzynski, R Organtini, G Pal, I Palomares, C Paolucci, P Paramatti, R Passaleva, G Patricelli, S Paul, T Pauluzzi, M Paus, C Pauss, E Pedace, M Pensotti, S Perret Gallix, D Petersen, B Piccolo, D Pierella, F Pioppi, M Piroue, PA Pistolesi, E Plyaskin, V Pohl M Pojidaev, V Pothier, J Prokofiev, D QUARTIERI, Joseph Rahal Callot, G Rahaman, MA Raics, P Raja, N Ramelli, R Rancoita, PG Ranieri, R Raspereza, A Razis, P Ren, D Rescigno, M Reucroft, S Riemann, S Riles, K Roe, BP Romero, L Rosca, A Rosemann, C Rosenbleck, C Rosier Lees, S Roth, S Rubio, JA Ruggiero, G Rykaczewski, H Sakharov, A Saremi, S Sarkar, S Salicio, J Sanchez, E Schafer, C Schegelsky, V Schopper, H Schotanus, DJ Sciacca, C Servoli, L Shevchenko, S Shivarov, N Shoutko, V Shumilov, E Shvorob, A Son, D Souga, C Spillantini, P Steuer, M Stickland, DP Stoyanov, B Straessner, A Sudhakar, K Sultanov, G Sun, LZ Sushkov, S Suter, H Swain, JD Szillasi, Z Tang, XW Tarjan, P Tauscher, L Taylor, L Tellili, B Teyssier, D Timmermans, C Ting, SCC Ting, SM Tonwar, SC Toth, J Tully, C Tung, KL Ulbricht, J Valente, E Van de Walle, RT Vasquez, R Veszpremi, V Vesztergombi, G Vetlitsky, I Vicinanza, D Viertel, G Villa, S Vivargent, M Vlachos, S Vodopianov, I Vogel, H Vogt, H Vorobiev, I Vorobyov, AA Wadhwa, M Wang, Q Wang, XL Wang, ZM Weber, A Weber, M Wilkens, H Wynhoff, S Xia, L Xu, ZZ Yamamoto, J Yang, BZ Yang, CG Yang, HJ Yang, M Yeh, SC Zalite, A Zalite, Y Zhang, ZP Zhao, J Zhu, GY Zhu, RY Zhuang, HL Zichichi, A Zimmermann, B Zoller, M. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2004
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 629.4 pb(-1), collected at centre-of-mass energies ranging from 189 to 209 GeV, 9834 four-fermion events with W bosons decaying into hadrons or leptons are selected. The total cross section is measured with a precision of 1.4% and agrees with the Standard Model expectation. Assuming charged-lepton universality, the branching fraction for hadronic W-boson decays is measured to be: Br(W --> hadrons) = 67.50 +/- 0.42(stat.) +/- 0.30(syst.)%, in agreement with the Standard Model. Differential cross sections as a function of the W- production angle are also measured for the semi-leptonic channels qqev and qqmuv.
Handle:	http://hdl.handle.net/11386/1002663
Appare nelle tipologie:	1.1.1 Articolo su rivista con DOI

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