Determination of A(FB)(b) using jet charge measurements in Z decays

Barate, R.; Buskulic, D.; Decamp, D.; Ghez, P.; Coy, C.; Lees, J.; Lucotte, A.; Merle, E.; Minard, M.; Nief, J.; Pietrzyk, B.; Alemany, R.; Boix, G.; Casado, M.; Chmeissani, M.; Crespo, J.; Delfino, M.; Fernandez, E.; Fernandez Bosman, M.; Garrido, L.; Grauges, E.; Juste, A.; Martinez, M.; Merino, G.; Miquel, R.; Mir, L.; Park, I.; Pascual, A.; Perlas, J.; Riu, I.; Sanchez, F.; Colaleo, A.; Creanza, D.; de Palma, M.; Gelao, G.; Iaselli, G.; Maggi, G.; Maggi, M.; Nuzzo, S.; Ranieri, A.; Tempesta, P.; Tricomi, A.; Raso, G.; Ruggieri, F.; Selvaggi, G.; Silvestris, L.; Zito, G.; Huang, X.; Lin, J.; Ouyang, Q.; Wang, T.; Xie, Y.; Xu, R.; Xue, S.; Zhang, J.; Zhang, L.; Zhao, W.; Abbaneo, D.; Becker, U.; Bright Thomas, P.; Casper, D.; Cattaneo, M.; Ciulli, V.; Dissertori, G.; Drevermann, H.; Forty, R.; Frank, M.; Hagelberg, R.; Hansen, J.; Harvey, J.; Janot, P.; Jost, B.; Lehraus, I.; Mato, P.; Minten, A.; Moneta, L.; Pacheco, A.; Pusztaszeri, J.; Ranjard, F.; Rolandi, L.; Rousseau, D.; Schlatter, D.; Schmitt, M.; Schneider, O.; Tejessy, W.; Teubert, F.; Tomalin, I.; Wachsmuth, H.; Ajaltouni, Z.; Badaud, F.; Chazelle, G.; Deschamps, O.; Falvard, A.; Ferdi, C.; Gay, P.; Guicheney, C.; Henrard, P.; Jousset, J.; Michel, B.; Monteil, S.; Montret, J.; Pallin, D.; Perret, P.; Podlyski, F.; Proriol, J.; Rosnet, P.; Hansen, J.; Hansen, J.; Hansen, P.; Nilsson, B.; Rensch, B.; Waananen, A.; Daskalakis, G.; Kyriakis, A.; Markou, C.; Simopoulou, E.; Siotis, I.; Vayaki, A.; Blondel, A.; Bonneaud, G.; Brient, J.; Bourdon, P.; Rouge, A.; Rumpf, M.; Valassi, A.; Verderi, M.; Videau, H.; Focardi, E.; Parrini, G.; Zachariadou, K.; Corden, M.; Georgiopoulos, C.; Jaffe, D.; Antonelli, A.; Bencivenni, G.; Bologna, G.; Bossi, F.; Campana, P.; Capon, G.; Cerutti, F.; Chiarella, V.; Felici, G.; Laurelli, P.; Mannocchi, G.; Murtas, F.; Murtas, G.; Passalacqua, L.; Pepe Altarelli, M.; Curtis, L.; Halley, A.; Lynch, J.; Negus, P.; O'Shea, V.; Raine, C.; Scarr, J.; Smith, K.; Teixeira Dias, P.; Thompson, A.; Thomson, E.; Buchmuller, O.; Dhamotharan, S.; Geweniger, C.; Graefe, G.; Hanke, P.; Hansper, G.; Hepp, V.; Kluge, E.; Putzer, A.; Sommer, J.; Tittel, K.; Werner, S.; Wunsch, M.; Beuselinck, R.; Binnie, D.; Cameron, W.; Dornan, P.; Girone, M.; Goodsir, S.; Martin, E.; Marinelli, N.; Moutoussi, A.; Nash, J.; Sedgbeer, J.; Spagnolo, P.; Williams, M.; Ghete, V.; Girtler, P.; Kneringer, E.; Kuhn, D.; Rudolph, G.; Betteridge, A.; Bowdery, C.; Buck, P.; Colrain, P.; Crawford, G.; Finch, A.; Foster, F.; Hughes, G.; Jones, R.; Robertson, N.; Williams, M.; Giehl, I.; Greene, A.; Hoffmann, C.; Jakobs, K.; Kleinknecht, K.; Quast, G.; Renk, B.; Rohne, E.; Sander, H.; van Gemmeren, P.; Zeitnitz, C.; Aubert, J.; Benchouk, C.; Bonissent, A.; Bujosa, G.; Carr, J.; Coyle, P.; Etienne, F.; Leroy, O.; Motsch, F.; Payre, P.; Talby, M.; Sadouki, A.; Thulasidas, M.; Trabelsi, K.; Aleppo, M.R.A.; Antonelli, M.; Ragusa, F.; Berlich, R.; Blum, W.; Buscher, V.; Dietl, H.; Ganis, G.; Kroha, H.; Lutjens, G.; Mannert, C.; Manner, W.; Moser, H.; Schael, S.; Settles, R.; Seywerd, H.; Stenzel, H.; Wiedenmann, W.; Wolf, G.; Boucrot, J.; Callot, O.; Chen, S.; Cordier, A.; Davier, M.; Duflot, L.; Grivaz, J.; Heusse, P.; Hocker, A.; Jacholkowska, A.; Kim, D.; Le Diberder, F.; Lefrancois, J.; Lutz, A.; Schune, M.; Tournefier, E.; Veillet, J.; Videau, I.; Zerwas, D.; Azzurri, P.; Bagliesi, G.; Batignani, G.; Bettarini, S.; Boccali, T.; Bozzi, C.; Calderini, G.; Carpinelli, M.; Ciocci, M.; Dell'Orso, R.; Fantechi, R.; Ferrante, I.; Foa, L.; Forti, F.; Giassi, A.; Giorgi, M.; Gregorio, A.; Ligabue, F.; Lusiani, A.; Marrocchesi, P.; Messineo, A.; Palla, F.; Rizzo, G.; Sanguinetti, G.; Sciaba, A.; Sguazzoni, G.; Tenchini, R.; Tonelli, G.; Vannini, C.; Venturi, A.; Verdini, P.; Blair, G.; Bryant, L.; Chambers, J.; Green, M.; Medcalf, T.; Perrodo, P.; Strong, J.; von Wimmersperg Toeller, J.; Botterill, D.; Clifft, R.; Edgecock, T.; Haywood, S.; Norton, P.; Thompson, J.; Wright, A.; Bloch Devaux, B.; Colas, P.; Emery, S.; Kozanecki, W.; Lancon, E.; Lemaire, M.; Locci, E.; Perez, P.; Rander, J.; Renardy, J.; Roussarie, A.; Schuller, J.; Schwindling, J.; Trabelsi, A.; Vallage, B.; Black, S.; Dann, J.; Johnson, R.; Kin, H.; Konstantinidis, N.; Litke, A.; Mcneil, M.; Taylor, G.; Booth, C.; Brew, C.; Cartwright, S.; Combley, F.; Kelly, M.; Lehto, M.; Reeve, J.; Thompson, L.; Affholderbach, K.; Bohrer, A.; Brandt, S.; Cowan, G.; Grupen, C.; Saraiva, P.; Smolik, L.; Stephan, F.; Apollonio, M.; Bosisio, L.; Della Marina, R.; Giannini, G.; Gobbo, B.; Musolino, G.; Rothberg, J.; Wasserbaech, S.; Armstrong, S.; Charles, E.; Elmer, P.; Ferguson, D.; Gao, Y.; Gonzalez, S.; Greening, T.; Hayes, O.; Hu, H.; Jin, S.; Mcnamara, P.; Nachtman, J.; Nielsen, J.; Orejudos, W.; Pan, Y.; Saadi, Y.; Scott, I.; Walsh, J.; Wu, S.; Wu, X.; Zobernig, G.

doi:10.1016/S0370-2693(98)00345-1

An improved measurement of the forward-backward asymmetry in Z --> b (b) over bar decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at root s= m(Z) is determined to be: A(FB)(b) = 0.1017 +/- 0.0032(syst.) +/- 0.0032(syst.). In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin(2) theta(W)(eff)= 0.23109 +/- 0.00096.

Determination of A(FB)(b) using jet charge measurements in Z decays / R. Barate, D. Buskulic, D. Decamp, P. Ghez, C. Coy, J. Lees, A. Lucotte, E. Merle, M. Minard, J. Nief, B. Pietrzyk, R. Alemany, G. Boix, M. Casado, M. Chmeissani, J. Crespo, M. Delfino, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. Grauges, A. Juste, M. Martinez, G. Merino, R. Miquel, L. Mir, I. Park, A. Pascual, J. Perlas, I. Riu, F. Sanchez, A. Colaleo, D. Creanza, M. de Palma, G. Gelao, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, P. Tempesta, A. Tricomi, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, U. Becker, P. Bright-Thomas, D. Casper, M. Cattaneo, V. Ciulli, G. Dissertori, H. Drevermann, R. Forty, M. Frank, R. Hagelberg, J. Hansen, J. Harvey, P. Janot, B. Jost, I. Lehraus, P. Mato, A. Minten, L. Moneta, A. Pacheco, J. Pusztaszeri, F. Ranjard, L. Rolandi, D. Rousseau, D. Schlatter, M. Schmitt, O. Schneider, W. Tejessy, F. Teubert, I. Tomalin, H. Wachsmuth, Z. Ajaltouni, F. Badaud, G. Chazelle, O. Deschamps, A. Falvard, C. Ferdi, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. Montret, D. Pallin, P. Perret, F. Podlyski, J. Proriol, P. Rosnet, J. Hansen, J. Hansen, P. Hansen, B. Nilsson, B. Rensch, A. Waananen, G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, A. Blondel, G. Bonneaud, J. Brient, P. Bourdon, A. Rouge, M. Rumpf, A. Valassi, M. Verderi, H. Videau, E. Focardi, G. Parrini, K. Zachariadou, M. Corden, C. Georgiopoulos, D. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, F. Cerutti, V. Chiarella, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G. Murtas, L. Passalacqua, M. Pepe-Altarelli, L. Curtis, A. Halley, J. Lynch, P. Negus, V. O'Shea, C. Raine, J. Scarr, K. Smith, P. Teixeira-Dias, A. Thompson, E. Thomson, O. Buchmuller, S. Dhamotharan, C. Geweniger, G. Graefe, P. Hanke, G. Hansper, V. Hepp, E. Kluge, A. Putzer, J. Sommer, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D. Binnie, W. Cameron, P. Dornan, M. Girone, S. Goodsir, E. Martin, N. Marinelli, A. Moutoussi, J. Nash, J. Sedgbeer, P. Spagnolo, M. Williams, V. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, A. Betteridge, C. Bowdery, P. Buck, P. Colrain, G. Crawford, A. Finch, F. Foster, G. Hughes, R. Jones, N. Robertson, M. Williams, I. Giehl, A. Greene, C. Hoffmann, K. Jakobs, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. Sander, P. van Gemmeren, C. Zeitnitz, J. Aubert, C. Benchouk, A. Bonissent, G. Bujosa, J. Carr, P. Coyle, F. Etienne, O. Leroy, F. Motsch, P. Payre, M. Talby, A. Sadouki, M. Thulasidas, K. Trabelsi, M.R.A. Aleppo, M. Antonelli, F. Ragusa, R. Berlich, W. Blum, V. Buscher, H. Dietl, G. Ganis, H. Kroha, G. Lutjens, C. Mannert, W. Manner, H. Moser, S. Schael, R. Settles, H. Seywerd, H. Stenzel, W. Wiedenmann, G. Wolf, J. Boucrot, O. Callot, S. Chen, A. Cordier, M. Davier, L. Duflot, J. Grivaz, P. Heusse, A. Hocker, A. Jacholkowska, D. Kim, F. Le Diberder, J. Lefrancois, A. Lutz, M. Schune, E. Tournefier, J. Veillet, I. Videau, D. Zerwas, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, T. Boccali, C. Bozzi, G. Calderini, M. Carpinelli, M. Ciocci, R. Dell'Orso, R. Fantechi, I. Ferrante, L. Foa, F. Forti, A. Giassi, M. Giorgi, A. Gregorio, F. Ligabue, A. Lusiani, P. Marrocchesi, A. Messineo, F. Palla, G. Rizzo, G. Sanguinetti, A. Sciaba, G. Sguazzoni, R. Tenchini, G. Tonelli, C. Vannini, A. Venturi, P. Verdini, G. Blair, L. Bryant, J. Chambers, M. Green, T. Medcalf, P. Perrodo, J. Strong, J. von Wimmersperg-Toeller, D. Botterill, R. Clifft, T. Edgecock, S. Haywood, P. Norton, J. Thompson, A. Wright, B. Bloch-Devaux, P. Colas, S. Emery, W. Kozanecki, E. Lancon, M. Lemaire, E. Locci, P. Perez, J. Rander, J. Renardy, A. Roussarie, J. Schuller, J. Schwindling, A. Trabelsi, B. Vallage, S. Black, J. Dann, R. Johnson, H. Kin, N. Konstantinidis, A. Litke, M. McNeil, G. Taylor, C. Booth, C. Brew, S. Cartwright, F. Combley, M. Kelly, M. Lehto, J. Reeve, L. Thompson, K. Affholderbach, A. Bohrer, S. Brandt, G. Cowan, C. Grupen, P. Saraiva, L. Smolik, F. Stephan, M. Apollonio, L. Bosisio, R. Della Marina, G. Giannini, B. Gobbo, G. Musolino, J. Rothberg, S. Wasserbaech, S. Armstrong, E. Charles, P. Elmer, D. Ferguson, Y. Gao, S. Gonzalez, T. Greening, O. Hayes, H. Hu, S. Jin, P. McNamara, J. Nachtman, J. Nielsen, W. Orejudos, Y. Pan, Y. Saadi, I. Scott, J. Walsh, S. Wu, X. Wu, G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 426:1/2(1998), pp. 217-230.

Determination of A(FB)(b) using jet charge measurements in Z decays

R. Barate;D. Buskulic;D. Decamp;P. Ghez;C. Coy;J. Lees;A. Lucotte;E. Merle;M. Minard;J. Nief;B. Pietrzyk;R. Alemany;G. Boix;M. Casado;M. Chmeissani;J. Crespo;M. Delfino;E. Fernandez;M. Fernandez Bosman;L. Garrido;E. Grauges;A. Juste;M. Martinez;G. Merino;R. Miquel;L. Mir;I. Park;A. Pascual;J. Perlas;I. Riu;F. Sanchez;A. Colaleo;D. Creanza;M. de Palma;G. Gelao;G. Iaselli;G. Maggi;M. Maggi;S. Nuzzo;A. Ranieri;P. Tempesta;A. Tricomi;G. Raso;F. Ruggieri;G. Selvaggi;L. Silvestris;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;D. Abbaneo;U. Becker;P. Bright Thomas;D. Casper;M. Cattaneo;V. Ciulli;G. Dissertori;H. Drevermann;R. Forty;M. Frank;R. Hagelberg;J. Hansen;J. Harvey;P. Janot;B. Jost;I. Lehraus;P. Mato;A. Minten;L. Moneta;A. Pacheco;J. Pusztaszeri;F. Ranjard;L. Rolandi;D. Rousseau;D. Schlatter;M. Schmitt;O. Schneider;W. Tejessy;F. Teubert;I. Tomalin;H. Wachsmuth;Z. Ajaltouni;F. Badaud;G. Chazelle;O. Deschamps;A. Falvard;C. Ferdi;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J. Montret;D. Pallin;P. Perret;F. Podlyski;J. Proriol;P. Rosnet;J. Hansen;J. Hansen;P. Hansen;B. Nilsson;B. Rensch;A. Waananen;G. Daskalakis;A. Kyriakis;C. Markou;E. Simopoulou;I. Siotis;A. Vayaki;A. Blondel;G. Bonneaud;J. Brient;P. Bourdon;A. Rouge;M. Rumpf;A. Valassi;M. Verderi;H. Videau;E. Focardi;G. Parrini;K. Zachariadou;M. Corden;C. Georgiopoulos;D. Jaffe;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;F. Cerutti;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G. Murtas;L. Passalacqua;M. Pepe Altarelli;L. Curtis;A. Halley;J. Lynch;P. Negus;V. O'Shea;C. Raine;J. Scarr;K. Smith;P. Teixeira Dias;A. Thompson;E. Thomson;O. Buchmuller;S. Dhamotharan;C. Geweniger;G. Graefe;P. Hanke;G. Hansper;V. Hepp;E. Kluge;A. Putzer;J. Sommer;K. Tittel;S. Werner;M. Wunsch;R. Beuselinck;D. Binnie;W. Cameron;P. Dornan;M. Girone;S. Goodsir;E. Martin;N. Marinelli;A. Moutoussi;J. Nash;J. Sedgbeer;P. Spagnolo;M. Williams;V. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;A. Betteridge;C. Bowdery;P. Buck;P. Colrain;G. Crawford;A. Finch;F. Foster;G. Hughes;R. Jones;N. Robertson;M. Williams;I. Giehl;A. Greene;C. Hoffmann;K. Jakobs;K. Kleinknecht;G. Quast;B. Renk;E. Rohne;H. Sander;P. van Gemmeren;C. Zeitnitz;J. Aubert;C. Benchouk;A. Bonissent;G. Bujosa;J. Carr;P. Coyle;F. Etienne;O. Leroy;F. Motsch;P. Payre;M. Talby;A. Sadouki;M. Thulasidas;K. Trabelsi;M.R.A. Aleppo;M. Antonelli;F. Ragusa;R. Berlich;W. Blum;V. Buscher;H. Dietl;G. Ganis;H. Kroha;G. Lutjens;C. Mannert;W. Manner;H. Moser;S. Schael;R. Settles;H. Seywerd;H. Stenzel;W. Wiedenmann;G. Wolf;J. Boucrot;O. Callot;S. Chen;A. Cordier;M. Davier;L. Duflot;J. Grivaz;P. Heusse;A. Hocker;A. Jacholkowska;D. Kim;F. Le Diberder;J. Lefrancois;A. Lutz;M. Schune;E. Tournefier;J. Veillet;I. Videau;D. Zerwas;P. Azzurri;G. Bagliesi;G. Batignani;S. Bettarini;T. Boccali;C. Bozzi;G. Calderini;M. Carpinelli;M. Ciocci;R. Dell'Orso;R. Fantechi;I. Ferrante;L. Foa;F. Forti;A. Giassi;M. Giorgi;A. Gregorio;F. Ligabue;A. Lusiani;P. Marrocchesi;A. Messineo;F. Palla;G. Rizzo;G. Sanguinetti;A. Sciaba;G. Sguazzoni;R. Tenchini;G. Tonelli;C. Vannini;A. Venturi;P. Verdini;G. Blair;L. Bryant;J. Chambers;M. Green;T. Medcalf;P. Perrodo;J. Strong;J. von Wimmersperg Toeller;D. Botterill;R. Clifft;T. Edgecock;S. Haywood;P. Norton;J. Thompson;A. Wright;B. Bloch Devaux;P. Colas;S. Emery;W. Kozanecki;E. Lancon;M. Lemaire;E. Locci;P. Perez;J. Rander;J. Renardy;A. Roussarie;J. Schuller;J. Schwindling;A. Trabelsi;B. Vallage;S. Black;J. Dann;R. Johnson;H. Kin;N. Konstantinidis;A. Litke;M. McNeil;G. Taylor;C. Booth;C. Brew;S. Cartwright;F. Combley;M. Kelly;M. Lehto;J. Reeve;L. Thompson;K. Affholderbach;A. Bohrer;S. Brandt;G. Cowan;C. Grupen;P. Saraiva;L. Smolik;F. Stephan;M. Apollonio;L. Bosisio;R. Della Marina;G. Giannini;B. Gobbo;G. Musolino;J. Rothberg;S. Wasserbaech;S. Armstrong;E. Charles;P. Elmer;D. Ferguson;Y. Gao;S. Gonzalez;T. Greening;O. Hayes;H. Hu;S. Jin;P. McNamara;J. Nachtman;J. Nielsen;W. Orejudos;Y. Pan;Y. Saadi;I. Scott;J. Walsh;S. Wu;X. Wu;G. Zobernig

1998

Abstract

An improved measurement of the forward-backward asymmetry in Z --> b (b) over bar decays is presented, based on a sample of 4.1 million hadronic Z decays collected by ALEPH between 1991 and 1995. Data are analysed as a function of polar angle of the event axis and b purity. The event tagging efficiency and mean b-jet hemisphere charge are measured directly from data. From the measured forward-backward jet charge asymmetry, the b quark asymmetry at root s= m(Z) is determined to be: A(FB)(b) = 0.1017 +/- 0.0032(syst.) +/- 0.0032(syst.). In the context of the Standard Model this corresponds to a value of the effective weak mixing angle of sin(2) theta(W)(eff)= 0.23109 +/- 0.00096.

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Scheda completa (DC)

	Settori scientifico-disciplinari dell'articolo
	
				Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
			
	Data di pubblicazione
	
				1998
			
	Rivista in ANCE
	
				PHYSICS LETTERS. SECTION B
			
	DOI
	
				https://dx.doi.org/10.1016/S0370-2693(98)00345-1
			
	Tipologia
	
				Article (author)
			
	Appare nelle tipologie:
	
				01 - Articolo su periodico

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