Measurement of the forward-backward asymmetries of e(+)e(-)-> Z -> b(b)over-bar and e(+)e(-)-> Z -> c(c)over-bar using prompt leptons

The forward-backward asymmetries of the processes e(+) e(-) --> Z --> b (b) over bar and e(+)e(-) --> Z --> c (c) over bar were measured from a sample of hadronic Z decays collected by the DELPHI experiment between 1993 and 1995. Enriched samples of b (b) over bar and c (c) over bar events were obtained using lifetime information. The tagging of b and c quarks in these samples was based on the semileptonic decay channels b/c --> X + mu and b/c --> X + e combined with charge flow information from the hemisphere opposite to the lepton. Combining the A(FB)(b (b) over bar) and A(FB)(c (c) over bar) measurements presented in this paper with published results based on 1991 and 1992 DELPHI data samples, the following pole asymmetries were obtained: A(FB)(0,b) = 0.1021 +/- 0.0052 (stat) +/- 0.0024 (syst) A(FB)(0,c) = 0.0728 +/- 0.0086 (stat) +/- 0.0063 (syst) The effective value of the weak mixing angle derived from these measurements is sin(2) theta(W,eff)(lept) = 0.23170 +/- 0.00097.

Measurement of the forward-backward asymmetries of e(+)e(-)-> Z -> b(b)over-bar and e(+)e(-)-> Z -> c(c)over-bar using prompt leptons / Abdallah J; Abreu P; Adam W; Adzic P; Albrecht T; Alderweireld T; Alemany-Fernandez R; Allmendinger T; Allport P; Amaldi U; Amapane N; Amato S; Anashkin E; Andreazza A; Andringa S; Anjos N; Antilogus P; Apel WD; Arnoud Y; Ask S; Asman B; Augustin E; Augustinus A; Baillon P; Ballestrero A; Bambade P; Barbier R; Bardin D; Barker G; Baroncelli A; Battaglia M; Baubillier M; Becks KH; Begalli M; Behrmann A; Ben-Haim E; Benekos N; Benvenuti A; Berat C; Berggren M; Berntzon L; Bertrand D; Besancon M; Besson N; Bloch D; Blom M; Bluj M; Bonesini M; Boonekamp M; Booth L; Borisov G; Botner O; Bouquet B; Bowcock V; Boyko I; Bracko M; Brenner R; Brodet E; Bruckman P; Brunet M; Bugge L; Buschmann P; Calvi M; Camporesi T; Canale V; Carena F; Castro N; Cavallo F; Chapkin M; Charpentier P; Checchia P; Chierici R; Chliapnikov P; Chudoba J; Chung U; Cieslik K; Collins P; Contri R; Cosme G; Cossutti F; Costa J; Crennell D; Cuevas J; D'Hondt J; Dalmau J; da Silva T; Da Silva W; Della Ricca G; De Angelis A; De Boer W; De Clercq C; De Lotto B; De Maria N; De Min A; de Paula L; Di Ciaccio L; Di Simone A; Doroba K; Drees J; Dris M; Eigen G; Ekelof T; Ellert M; Elsing M; Santo CE; Fanourakis G; Fassouliotis D; Feindt M; Fernandez J; Ferrer A; Ferro F; Flagmeyer U; Foeth H; Fokitis E; Fulda-Quenzer F; Fuster J; Gandelman M; Garcia C; Gavillet P; Gazis E; Gokieli R; Golob B; Ceballos GG; Goncalves P; Graziani E; Grosdidier G; Grzelak K; Guy J; Haag C; Hallgren A; Hamacher K; Hamilton K; Haug S; Hauler F; Hedberg V; Hennecke M; Herr H; Hoffman J; Holmgren SO; Holt J; Houlden A; Hultqvist K; Jackson N; Jarlskog G; Jarry P; Jeans D; Johansson K; Johansson D; Jonsson P; Joram C; Jungermann L; Kapusta F; Katsanevas S; Katsoufis E; Kernel G; Kersevan P; Kerzel U; Kiiskinen A; King T; Kjaer J; Kluit P; Kokkinias P; Kourkoumelis C; Kouznetsov O; Krumstein Z; Kucharczyk M; Lamsa J; Leder G; Ledroit F; Leinonen L; Leitner R; Lemonne J; Lepeltier V; Lesiak T; Liebig W; Liko D; Lipniacka A; Lopes H; Lopez M; Loukas D; Lutz P; Lyons L; MacNaughton J; Malek A; Maltezos S; Mandl F; Marco J; Marco R; Marechal B; Margoni M; Marin JC; Mariotti C; Markou A; Martinez-Rivero C; Masik J; Mastroyiannopoulos N; Matorras F; Matteuzzi C; Mazzucato F; Mazzucato M; Mc Nulty R; Meroni C; Migliore E; Mitaroff W; Mjoernmark U; Moa T; Moch M; Moenig K; Monge R; Montenegro J; Moraes D; Moreno S; Morettini P; Mueller U; Muenich K; Mulders M; Mundim L; Murray W; Muryn B; Myatt G; Myklebust T; Nassiakou M; Navarria F; Nawrocki K; Nicolaidou R; Nikolenko M; Oblakowska-Mucha A; Obraztsov V; Olshevski A; Onofre A; Orava R; Osterberg K; Ouraou A; Oyanguren A; Paganoni M; Paiano S; Palacios P; Palka H; Papadopoulou D; Pape L; Parkes C; Parodi F; Parzefall U; Passeri A; Passon O; Peralta L; Perepelitsa V; Perrotta A; Petrolini A; Piedra J; Pieri L; Pierre F; Pimenta M; Piotto E; Podobnik T; Poireau V; Pol E; Polok G; Poropat P; Pozdniakov V; Pukhaeva N; Pullia A; Rames J; Ramler L; Read A; Rebecchi P; Rehn J; Reid D; Reinhardt R; Renton P; Richard F; Ridky J; Rivero M; Rodriguez D; Romero A; Ronchese P; Roudeau P; Rovelli T; Ruhlmann-Kleider V; Ryabtchikov D; Sadovsky A; Salmi L; Salt J; Savoy-Navarro A; Schwickerath U; Segar A; Sekulin R; Siebel M; Sisakian A; Smadja G; Smirnova O; Sokolov A; Sopczak A; Sosnowski R; Spassov T; Stanitzki M; Stocchi A; Strauss J; Stugu B; Szczekowski M; Szeptycka M; Szumlak T; Tabarelli T; Taffard C; Tegenfeldt F; Timmermans J; Tkatchev L; Tobin M; Todorovova S; Tome B; Tonazzo A; Tortosa P; Travnicek P; Treille D; Tristram G; Trochimczuk M; Troncon C; Turluer ML; Tyapkin A; Tyapkin P; Tzamarias S; Uvarov V; Valenti G; Van Dam P; Van Eldik J; Van Lysebetten A; van Remortel N; Van Vulpen I; Vegni G; Veloso F; Venus W; Verdier P; Verzi V; Vilanova D; Vitale L; Vrba V; Wahlen H; Washbrook J; Weiser C; Wicke D; Wickens J; Wilkinson G; Winter M; Witek M; Yushchenko O; Zalewska A; Zalewski P; Zavrtanik D; Zhuravlov V; Zimin I; Zintchenko A; Zupan M. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 34:2(2004), pp. 109-125.

Titolo: Measurement of the forward-backward asymmetries of e(+)e(-)-> Z -> b(b)over-bar and e(+)e(-)-> Z -> c(c)over-bar using prompt leptons
Autori: 
DE ANGELIS, Alessandro
DE LOTTO, Barbara
mostra contributor esterni 
Data di pubblicazione: 2004
Rivista: 
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS  
Citazione: Measurement of the forward-backward asymmetries of e(+)e(-)-> Z -> b(b)over-bar and e(+)e(-)-> Z -> c(c)over-bar using prompt leptons / Abdallah J; Abreu P; Adam W; Adzic P; Albrecht T; Alderweireld T; Alemany-Fernandez R; Allmendinger T; Allport P; Amaldi U; Amapane N; Amato S; Anashkin E; Andreazza A; Andringa S; Anjos N; Antilogus P; Apel WD; Arnoud Y; Ask S; Asman B; Augustin E; Augustinus A; Baillon P; Ballestrero A; Bambade P; Barbier R; Bardin D; Barker G; Baroncelli A; Battaglia M; Baubillier M; Becks KH; Begalli M; Behrmann A; Ben-Haim E; Benekos N; Benvenuti A; Berat C; Berggren M; Berntzon L; Bertrand D; Besancon M; Besson N; Bloch D; Blom M; Bluj M; Bonesini M; Boonekamp M; Booth L; Borisov G; Botner O; Bouquet B; Bowcock V; Boyko I; Bracko M; Brenner R; Brodet E; Bruckman P; Brunet M; Bugge L; Buschmann P; Calvi M; Camporesi T; Canale V; Carena F; Castro N; Cavallo F; Chapkin M; Charpentier P; Checchia P; Chierici R; Chliapnikov P; Chudoba J; Chung U; Cieslik K; Collins P; Contri R; Cosme G; Cossutti F; Costa J; Crennell D; Cuevas J; D'Hondt J; Dalmau J; da Silva T; Da Silva W; Della Ricca G; De Angelis A; De Boer W; De Clercq C; De Lotto B; De Maria N; De Min A; de Paula L; Di Ciaccio L; Di Simone A; Doroba K; Drees J; Dris M; Eigen G; Ekelof T; Ellert M; Elsing M; Santo CE; Fanourakis G; Fassouliotis D; Feindt M; Fernandez J; Ferrer A; Ferro F; Flagmeyer U; Foeth H; Fokitis E; Fulda-Quenzer F; Fuster J; Gandelman M; Garcia C; Gavillet P; Gazis E; Gokieli R; Golob B; Ceballos GG; Goncalves P; Graziani E; Grosdidier G; Grzelak K; Guy J; Haag C; Hallgren A; Hamacher K; Hamilton K; Haug S; Hauler F; Hedberg V; Hennecke M; Herr H; Hoffman J; Holmgren SO; Holt J; Houlden A; Hultqvist K; Jackson N; Jarlskog G; Jarry P; Jeans D; Johansson K; Johansson D; Jonsson P; Joram C; Jungermann L; Kapusta F; Katsanevas S; Katsoufis E; Kernel G; Kersevan P; Kerzel U; Kiiskinen A; King T; Kjaer J; Kluit P; Kokkinias P; Kourkoumelis C; Kouznetsov O; Krumstein Z; Kucharczyk M; Lamsa J; Leder G; Ledroit F; Leinonen L; Leitner R; Lemonne J; Lepeltier V; Lesiak T; Liebig W; Liko D; Lipniacka A; Lopes H; Lopez M; Loukas D; Lutz P; Lyons L; MacNaughton J; Malek A; Maltezos S; Mandl F; Marco J; Marco R; Marechal B; Margoni M; Marin JC; Mariotti C; Markou A; Martinez-Rivero C; Masik J; Mastroyiannopoulos N; Matorras F; Matteuzzi C; Mazzucato F; Mazzucato M; Mc Nulty R; Meroni C; Migliore E; Mitaroff W; Mjoernmark U; Moa T; Moch M; Moenig K; Monge R; Montenegro J; Moraes D; Moreno S; Morettini P; Mueller U; Muenich K; Mulders M; Mundim L; Murray W; Muryn B; Myatt G; Myklebust T; Nassiakou M; Navarria F; Nawrocki K; Nicolaidou R; Nikolenko M; Oblakowska-Mucha A; Obraztsov V; Olshevski A; Onofre A; Orava R; Osterberg K; Ouraou A; Oyanguren A; Paganoni M; Paiano S; Palacios P; Palka H; Papadopoulou D; Pape L; Parkes C; Parodi F; Parzefall U; Passeri A; Passon O; Peralta L; Perepelitsa V; Perrotta A; Petrolini A; Piedra J; Pieri L; Pierre F; Pimenta M; Piotto E; Podobnik T; Poireau V; Pol E; Polok G; Poropat P; Pozdniakov V; Pukhaeva N; Pullia A; Rames J; Ramler L; Read A; Rebecchi P; Rehn J; Reid D; Reinhardt R; Renton P; Richard F; Ridky J; Rivero M; Rodriguez D; Romero A; Ronchese P; Roudeau P; Rovelli T; Ruhlmann-Kleider V; Ryabtchikov D; Sadovsky A; Salmi L; Salt J; Savoy-Navarro A; Schwickerath U; Segar A; Sekulin R; Siebel M; Sisakian A; Smadja G; Smirnova O; Sokolov A; Sopczak A; Sosnowski R; Spassov T; Stanitzki M; Stocchi A; Strauss J; Stugu B; Szczekowski M; Szeptycka M; Szumlak T; Tabarelli T; Taffard C; Tegenfeldt F; Timmermans J; Tkatchev L; Tobin M; Todorovova S; Tome B; Tonazzo A; Tortosa P; Travnicek P; Treille D; Tristram G; Trochimczuk M; Troncon C; Turluer ML; Tyapkin A; Tyapkin P; Tzamarias S; Uvarov V; Valenti G; Van Dam P; Van Eldik J; Van Lysebetten A; van Remortel N; Van Vulpen I; Vegni G; Veloso F; Venus W; Verdier P; Verzi V; Vilanova D; Vitale L; Vrba V; Wahlen H; Washbrook J; Weiser C; Wicke D; Wickens J; Wilkinson G; Winter M; Witek M; Yushchenko O; Zalewska A; Zalewski P; Zavrtanik D; Zhuravlov V; Zimin I; Zintchenko A; Zupan M. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 34:2(2004), pp. 109-125.
Abstract: The forward-backward asymmetries of the processes e(+) e(-) --> Z --> b (b) over bar and e(+)e(-) --> Z --> c (c) over bar were measured from a sample of hadronic Z decays collected by the DELPHI experiment between 1993 and 1995. Enriched samples of b (b) over bar and c (c) over bar events were obtained using lifetime information. The tagging of b and c quarks in these samples was based on the semileptonic decay channels b/c --> X + mu and b/c --> X + e combined with charge flow information from the hemisphere opposite to the lepton. Combining the A(FB)(b (b) over bar) and A(FB)(c (c) over bar) measurements presented in this paper with published results based on 1991 and 1992 DELPHI data samples, the following pole asymmetries were obtained: A(FB)(0,b) = 0.1021 +/- 0.0052 (stat) +/- 0.0024 (syst) A(FB)(0,c) = 0.0728 +/- 0.0086 (stat) +/- 0.0063 (syst) The effective value of the weak mixing angle derived from these measurements is sin(2) theta(W,eff)(lept) = 0.23170 +/- 0.00097.
Handle: http://hdl.handle.net/11390/696058
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