Measurement of Ab                      FBusing inclusive b-hadron decays

A. Heister; S. Schael; R. Barate; I. De Bonis; D. Decamp; C. Goy; J. P. Less; E. Merle; M. N. Minard; B. Pietrzyk; S. Bravo; M. P. Casado; M. Chmeissani; J. M. Crespo; E. Fernandez; M. Fernandez-Bosman; Ll Garrido; E. Graugés; M. Martinez; G. Merino; R. Miquel; Ll M. Mir; A. Pacheco; H. Ruiz; A. Colaleo; D. Creanza; M. De Palma; G. Iaselli; G. Maggi; M. Maggi; S. Nuzzo; A. Ranieri; G. Raso; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; A. Tricomi; G. Zito; X. Huang; J. Lin; Q. Ouyang; T. Wang; Y. Xie; R. Xu; S. Xue; J. Zhang; L. Zhang; W. Zhao; D. Abbaneo; P. Azzurri; G. Boix; O. Buchmüller; M. Cattaneo; F. Cerutti; B. Clerbaux; G. Dissertori; H. Drevermann; R. W. Forty; M. Frank; T. C. Greening; J. B. Hansen; J. Harvey; P. Janot; B. Jost; M. Kado; P. Mato; A. Moutoussi; F. Ranjard; L. Rolandi; D. Schlatter; O. Schneider; W. Tejessy; F. Teubert; E. Tournefier; J. Ward; Z. Ajaltouni; F. Badaud; A. Falvard; P. Gay; P. Henrard; J. Jousset; B. Michel; S. Monteil; J. C. Montret; D. Pallin; P. Perret; F. Podlyski; J. D. Hansen; J. R. Hansen; P. H. Hansen; B. S. Nilsson; A. Wäänänen; A. Kyriakis; C. Markou; E. Simopoulou; A. Vayaki; K. Zachariadou; A. Blondel; G. Bonneaud; J. C. Brient; A. Rougé; M. Rumpf; M. Swynghedauw; M. Verderi; H. Videau; V. Ciulli; E. Focardi; G. Parrini; A. Antonelli; M. Antonelli; G. Bencivenni; G. Bologna; F. Bossi; P. Campana; G. Capon; V. Chiarella; P. Laurelli; G. Mannocchi; F. Murtas; G. P. Murtas; L. Passalacqua; M. Pepe-Altarelli; P. Spagnolo; A. W. Halley; J. G. Lynch; P. Negus; V. O'Shea; C. Raine; A. S. Thompson; S. Wasserbaech; R. Cavanaugh; S. Dhamotharan; C. Geweniger; P. Hanke; G. Hansper; V. Hepp; E. E. Kluge; A. Putzer; J. Sommer; K. Tittel; S. Werner; M. Wunsch; R. Beuselinck; D. M. Binnie; W. Cameron; P. J. Dornan; M. Girone; N. Marinelli; J. K. Sedgbeer; J. C. Thomson; V. M. Ghete; P. Girtler; E. Kneringer; D. Kuhn; G. Rudolph; E. Bouhova-Thacker; C. K. Bowdery; A. J. Finch; F. Foster; G. Hughes; R. W.L. Jones; M. R. Pearson; N. A. Robertson; I. Giehl; K. Jakobs; K. Kleinknecht; G. Quast; B. Renk; E. Rohne; H. G. Sander; H. Wachsmuth; C. Zeitnitz; A. Bonissent; J. Carr; P. Coyle; O. Leroy; P. Payre; D. Rousseau; M. Talby; M. Aleppo; F. Ragusa; A. David; H. Dietl; G. Ganis; K. Hüttmann; G. Lütjens; C. Mannert; W. Männer; H. G. Moser; R. Settles; H. Stenzel; W. Wiedenmann; G. Wolf; J. Boucrot; O. Callot; M. Davier; L. Duflot; J. F. Grivaz; Ph Heusse; A. Jacholkowska; J. Lefrançois; J. J. Veillet; I. Videau; C. Yuan; G. Bagliesi; T. Boccali; G. Calderini; L. Fòa; A. Giammanco; A. Giassi; F. Ligabue; A. Messineo; F. Palla; G. Sanguinetti; A. Sciab`a; G. Sguazzoni; R. Tenchini; A. Venturi; P. G. Verdini; G. A. Blair; G. Cowan; M. G. Green; T. Medcalf; A. Misiejuk; J. A. Strong; P. Teixeira-Dias; J. H. von Wimmersperg-Toeller; R. W. Clifft; T. R. Edgecock; P. R. Norton; I. R. Tomalin; B. Bloch-Devaux; P. Colas; S. Emery; W. Kozanecki; E. Lan¸con; M. C. Lemaire; E. Locci; P. Perez; J. Rander; J. F. Renardy; A. Roussarie; J. P. Schuller; J. Schwindling; A. Trabelsi; B. Vallage; N. Konstantinidis; A. M. Litke; G. Taylor; C. N. Booth; S. Cartwright; F. Combley; M. Lehto; L. F. Thompson; K. Affholderbach; A. Böohrer; S. Brandt; C. Grupen; A. Ngac; G. Prange; U. Sieler; G. Giannini; J. Rothberg; S. R. Armstrong; K. Cranmer; P. Elmer; D. P.S. Ferguson; Y. Gao; S. González; O. J. Hayes; H. Hu; S. Jin; J. Kile; P. A. McNamara; J. Nielsen; W. Orejudos; Y. B. Pan; Y. Saadi; I. J. Scott; J. Walsh; S. L. Wu; X. Wu; G. Zobernig

doi:10.1007/s100520100812

Measurement of A^b _FBusing inclusive b-hadron decays

A. Heister, S. Schael, R. Barate, I. De Bonis, D. Decamp, C. Goy, J. P. Less, E. Merle, M. N. Minard, B. Pietrzyk, S. Bravo, M. P. Casado, M. Chmeissani, J. M. Crespo, E. Fernandez, M. Fernandez-Bosman, Ll Garrido, E. Graugés, M. Martinez, G. MerinoR. Miquel, Ll M. Mir, A. Pacheco, H. Ruiz, A. Colaleo, D. Creanza, M. De Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, P. Azzurri, G. Boix, O. Buchmüller, M. Cattaneo, F. Cerutti, B. Clerbaux, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, T. C. Greening, J. B. Hansen, J. Harvey, P. Janot, B. Jost, M. Kado, P. Mato, A. Moutoussi, F. Ranjard, L. Rolandi, D. Schlatter, O. Schneider, W. Tejessy, F. Teubert, E. Tournefier, J. Ward, Z. Ajaltouni, F. Badaud, A. Falvard, P. Gay, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. C. Montret, D. Pallin, P. Perret, F. Podlyski, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, A. Wäänänen, A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J. C. Brient, A. Rougé, M. Rumpf, M. Swynghedauw, M. Verderi, H. Videau, V. Ciulli, E. Focardi, G. Parrini, A. Antonelli, M. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, V. Chiarella, P. Laurelli, G. Mannocchi, F. Murtas, G. P. Murtas, L. Passalacqua, M. Pepe-Altarelli, P. Spagnolo, A. W. Halley, J. G. Lynch, P. Negus, V. O'Shea, C. Raine, A. S. Thompson, S. Wasserbaech, R. Cavanaugh, S. Dhamotharan, C. Geweniger, P. Hanke, G. Hansper, V. Hepp, E. E. Kluge, A. Putzer, J. Sommer, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D. M. Binnie, W. Cameron, P. J. Dornan, M. Girone, N. Marinelli, J. K. Sedgbeer, J. C. Thomson, V. M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, E. Bouhova-Thacker, C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes, R. W.L. Jones, M. R. Pearson, N. A. Robertson, I. Giehl, K. Jakobs, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. G. Sander, H. Wachsmuth, C. Zeitnitz, A. Bonissent, J. Carr, P. Coyle, O. Leroy, P. Payre, D. Rousseau, M. Talby, M. Aleppo, F. Ragusa, A. David, H. Dietl, G. Ganis, K. Hüttmann, G. Lütjens, C. Mannert, W. Männer, H. G. Moser, R. Settles, H. Stenzel, W. Wiedenmann, G. Wolf, J. Boucrot, O. Callot, M. Davier, L. Duflot, J. F. Grivaz, Ph Heusse, A. Jacholkowska, J. Lefrançois, J. J. Veillet, I. Videau, C. Yuan, G. Bagliesi, T. Boccali, G. Calderini, L. Fòa, A. Giammanco, A. Giassi, F. Ligabue, A. Messineo, F. Palla, G. Sanguinetti, A. Sciab`a, G. Sguazzoni, R. Tenchini, A. Venturi, P. G. Verdini, G. A. Blair, G. Cowan, M. G. Green, T. Medcalf, A. Misiejuk, J. A. Strong, P. Teixeira-Dias, J. H. von Wimmersperg-Toeller, R. W. Clifft, T. R. Edgecock, P. R. Norton, I. R. Tomalin, B. Bloch-Devaux, P. Colas, S. Emery, W. Kozanecki, E. Lan¸con, M. C. Lemaire, E. Locci, P. Perez, J. Rander, J. F. Renardy, A. Roussarie, J. P. Schuller, J. Schwindling, A. Trabelsi, B. Vallage, N. Konstantinidis, A. M. Litke, G. Taylor, C. N. Booth, S. Cartwright, F. Combley, M. Lehto, L. F. Thompson, K. Affholderbach, A. Böohrer, S. Brandt, C. Grupen, A. Ngac, G. Prange, U. Sieler, G. Giannini, J. Rothberg, S. R. Armstrong, K. Cranmer, P. Elmer, D. P.S. Ferguson, Y. Gao, S. González, O. J. Hayes, H. Hu, S. Jin, J. Kile, P. A. McNamara, J. Nielsen, W. Orejudos, Y. B. Pan, Y. Saadi, I. J. Scott, J. Walsh, S. L. Wu, X. Wu, G. Zobernig

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

Based on a sample of four million events collected by ALEPH from 1991 to 1995, a measurement of the forward-backward asymmetry in Z → bb̄ decays using inclusive final states is presented. High-performance tagging of bb̄ events in a wide angular range is achieved using neural network techniques. An optimal hemisphere charge estimator is built by merging primary and secondary vertex information, leading kaon identification and jet charge in a neural network. The average charge asymmetry, the flavour tagging efficiencies and mean b-hemisphere charges are measured from data and used to extract the pole b asymmetry in the Standard Model A^0,b _FB= 0.1011 ± 0.0027 (stat) ± 0.0012 (syst), corresponding to a value of the effective weak mixing angle of sin²θ^eff _W= 0.23189 ± 0.00056.

Original language	English (US)
Pages (from-to)	201-215
Number of pages	15
Journal	European Physical Journal C
Volume	22
Issue number	2
DOIs	https://doi.org/10.1007/s100520100812
State	Published - Nov 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

Access to Document

10.1007/s100520100812

Cite this

Heister, A., Schael, S., Barate, R., De Bonis, I., Decamp, D., Goy, C., Less, J. P., Merle, E., Minard, M. N., Pietrzyk, B., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Graugés, E., Martinez, M., ... Zobernig, G. (2001). Measurement of A^b _FBusing inclusive b-hadron decays. European Physical Journal C, 22(2), 201-215. https://doi.org/10.1007/s100520100812

@article{a49dc252f155450b8a74414d755f132c,

title = "Measurement of Ab FBusing inclusive b-hadron decays",

abstract = "Based on a sample of four million events collected by ALEPH from 1991 to 1995, a measurement of the forward-backward asymmetry in Z → b{\=b} decays using inclusive final states is presented. High-performance tagging of b{\=b} events in a wide angular range is achieved using neural network techniques. An optimal hemisphere charge estimator is built by merging primary and secondary vertex information, leading kaon identification and jet charge in a neural network. The average charge asymmetry, the flavour tagging efficiencies and mean b-hemisphere charges are measured from data and used to extract the pole b asymmetry in the Standard Model A0,b FB= 0.1011 ± 0.0027 (stat) ± 0.0012 (syst), corresponding to a value of the effective weak mixing angle of sin2θeff W= 0.23189 ± 0.00056.",

author = "A. Heister and S. Schael and R. Barate and {De Bonis}, I. and D. Decamp and C. Goy and Less, {J. P.} and E. Merle and Minard, {M. N.} and B. Pietrzyk and S. Bravo and Casado, {M. P.} and M. Chmeissani and Crespo, {J. M.} and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and E. Graug{\'e}s and M. Martinez and G. Merino and R. Miquel and Mir, {Ll M.} and A. Pacheco and H. Ruiz and A. Colaleo and D. Creanza and {De Palma}, M. and G. Iaselli and G. Maggi and M. Maggi and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and Q. Ouyang and T. Wang and Y. Xie and R. Xu and S. Xue and J. Zhang and L. Zhang and W. Zhao and D. Abbaneo and P. Azzurri and G. Boix and O. Buchm{\"u}ller and M. Cattaneo and F. Cerutti and B. Clerbaux and G. Dissertori and H. Drevermann and Forty, {R. W.} and M. Frank and Greening, {T. C.} and Hansen, {J. B.} and J. Harvey and P. Janot and B. Jost and M. Kado and P. Mato and A. Moutoussi and F. Ranjard and L. Rolandi and D. Schlatter and O. Schneider and W. Tejessy and F. Teubert and E. Tournefier and J. Ward and Z. Ajaltouni and F. Badaud and A. Falvard and P. Gay and P. Henrard and J. Jousset and B. Michel and S. Monteil and Montret, {J. C.} and D. Pallin and P. Perret and F. Podlyski and Hansen, {J. D.} and Hansen, {J. R.} and Hansen, {P. H.} and Nilsson, {B. S.} and A. W{\"a}{\"a}n{\"a}nen and A. Kyriakis and C. Markou and E. Simopoulou and A. Vayaki and K. Zachariadou and A. Blondel and G. Bonneaud and Brient, {J. C.} and A. Roug{\'e} and M. Rumpf and M. Swynghedauw and M. Verderi and H. Videau and V. Ciulli and E. Focardi and G. Parrini and A. Antonelli and M. Antonelli and G. Bencivenni and G. Bologna and F. Bossi and P. Campana and G. Capon and V. Chiarella and P. Laurelli and G. Mannocchi and F. Murtas and Murtas, {G. P.} and L. Passalacqua and M. Pepe-Altarelli and P. Spagnolo and Halley, {A. W.} and Lynch, {J. G.} and P. Negus and V. O'Shea and C. Raine and Thompson, {A. S.} and S. Wasserbaech and R. Cavanaugh and S. Dhamotharan and C. Geweniger and P. Hanke and G. Hansper and V. Hepp and Kluge, {E. E.} and A. Putzer and J. Sommer and K. Tittel and S. Werner and M. Wunsch and R. Beuselinck and Binnie, {D. M.} and W. Cameron and Dornan, {P. J.} and M. Girone and N. Marinelli and Sedgbeer, {J. K.} and Thomson, {J. C.} and Ghete, {V. M.} and P. Girtler and E. Kneringer and D. Kuhn and G. Rudolph and E. Bouhova-Thacker and Bowdery, {C. K.} and Finch, {A. J.} and F. Foster and G. Hughes and Jones, {R. W.L.} and Pearson, {M. R.} and Robertson, {N. A.} and I. Giehl and K. Jakobs and K. Kleinknecht and G. Quast and B. Renk and E. Rohne and Sander, {H. G.} and H. Wachsmuth and C. Zeitnitz and A. Bonissent and J. Carr and P. Coyle and O. Leroy and P. Payre and D. Rousseau and M. Talby and M. Aleppo and F. Ragusa and A. David and H. Dietl and G. Ganis and K. H{\"u}ttmann and G. L{\"u}tjens and C. Mannert and W. M{\"a}nner and Moser, {H. G.} and R. Settles and H. Stenzel and W. Wiedenmann and G. Wolf and J. Boucrot and O. Callot and M. Davier and L. Duflot and Grivaz, {J. F.} and Ph Heusse and A. Jacholkowska and J. Lefran{\c c}ois and Veillet, {J. J.} and I. Videau and C. Yuan and G. Bagliesi and T. Boccali and G. Calderini and L. F{\`o}a and A. Giammanco and A. Giassi and F. Ligabue and A. Messineo and F. Palla and G. Sanguinetti and A. Sciab`a and G. Sguazzoni and R. Tenchini and A. Venturi and Verdini, {P. G.} and Blair, {G. A.} and G. Cowan and Green, {M. G.} and T. Medcalf and A. Misiejuk and Strong, {J. A.} and P. Teixeira-Dias and {von Wimmersperg-Toeller}, {J. H.} and Clifft, {R. W.} and Edgecock, {T. R.} and Norton, {P. R.} and Tomalin, {I. R.} and B. Bloch-Devaux and P. Colas and S. Emery and W. Kozanecki and E. Lan¸con and Lemaire, {M. C.} and E. Locci and P. Perez and J. Rander and Renardy, {J. F.} and A. Roussarie and Schuller, {J. P.} and J. Schwindling and A. Trabelsi and B. Vallage and N. Konstantinidis and Litke, {A. M.} and G. Taylor and Booth, {C. N.} and S. Cartwright and F. Combley and M. Lehto and Thompson, {L. F.} and K. Affholderbach and A. B{\"o}ohrer and S. Brandt and C. Grupen and A. Ngac and G. Prange and U. Sieler and G. Giannini and J. Rothberg and Armstrong, {S. R.} and K. Cranmer and P. Elmer and Ferguson, {D. P.S.} and Y. Gao and S. Gonz{\'a}lez and Hayes, {O. J.} and H. Hu and S. Jin and J. Kile and McNamara, {P. A.} and J. Nielsen and W. Orejudos and Pan, {Y. B.} and Y. Saadi and Scott, {I. J.} and J. Walsh and Wu, {S. L.} and X. Wu and G. Zobernig",

year = "2001",

month = nov,

doi = "10.1007/s100520100812",

language = "English (US)",

volume = "22",

pages = "201--215",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "2",

}

Heister, A, Schael, S, Barate, R, De Bonis, I, Decamp, D, Goy, C, Less, JP, Merle, E, Minard, MN, Pietrzyk, B, Bravo, S, Casado, MP, Chmeissani, M, Crespo, JM, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Graugés, E, Martinez, M, Merino, G, Miquel, R, Mir, LM, Pacheco, A, Ruiz, H, Colaleo, A, Creanza, D, De Palma, M, Iaselli, G, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Azzurri, P, Boix, G, Buchmüller, O, Cattaneo, M, Cerutti, F, Clerbaux, B, Dissertori, G, Drevermann, H, Forty, RW, Frank, M, Greening, TC, Hansen, JB, Harvey, J, Janot, P, Jost, B, Kado, M, Mato, P, Moutoussi, A, Ranjard, F, Rolandi, L, Schlatter, D, Schneider, O, Tejessy, W, Teubert, F, Tournefier, E, Ward, J, Ajaltouni, Z, Badaud, F, Falvard, A, Gay, P, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, JC, Pallin, D, Perret, P, Podlyski, F, Hansen, JD, Hansen, JR, Hansen, PH, Nilsson, BS, Wäänänen, A, Kyriakis, A, Markou, C, Simopoulou, E, Vayaki, A, Zachariadou, K, Blondel, A, Bonneaud, G, Brient, JC, Rougé, A, Rumpf, M, Swynghedauw, M, Verderi, M, Videau, H, Ciulli, V, Focardi, E, Parrini, G, Antonelli, A, Antonelli, M, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Chiarella, V, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, GP, Passalacqua, L, Pepe-Altarelli, M, Spagnolo, P, Halley, AW, Lynch, JG, Negus, P, O'Shea, V, Raine, C, Thompson, AS, Wasserbaech, S, Cavanaugh, R, Dhamotharan, S, Geweniger, C, Hanke, P, Hansper, G, Hepp, V, Kluge, EE, Putzer, A, Sommer, J, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, DM, Cameron, W, Dornan, PJ, Girone, M, Marinelli, N, Sedgbeer, JK, Thomson, JC, Ghete, VM, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bouhova-Thacker, E, Bowdery, CK, Finch, AJ, Foster, F, Hughes, G, Jones, RWL, Pearson, MR, Robertson, NA, Giehl, I, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, HG, Wachsmuth, H, Zeitnitz, C, Bonissent, A, Carr, J, Coyle, P, Leroy, O, Payre, P, Rousseau, D, Talby, M, Aleppo, M, Ragusa, F, David, A, Dietl, H, Ganis, G, Hüttmann, K, Lütjens, G, Mannert, C, Männer, W, Moser, HG, Settles, R, Stenzel, H, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Davier, M, Duflot, L, Grivaz, JF, Heusse, P, Jacholkowska, A, Lefrançois, J, Veillet, JJ, Videau, I, Yuan, C, Bagliesi, G, Boccali, T, Calderini, G, Fòa, L, Giammanco, A, Giassi, A, Ligabue, F, Messineo, A, Palla, F, Sanguinetti, G, Sciab`a, A, Sguazzoni, G, Tenchini, R, Venturi, A, Verdini, PG, Blair, GA, Cowan, G, Green, MG, Medcalf, T, Misiejuk, A, Strong, JA, Teixeira-Dias, P, von Wimmersperg-Toeller, JH, Clifft, RW, Edgecock, TR, Norton, PR, Tomalin, IR, Bloch-Devaux, B, Colas, P, Emery, S, Kozanecki, W, Lan¸con, E, Lemaire, MC, Locci, E, Perez, P, Rander, J, Renardy, JF, Roussarie, A, Schuller, JP, Schwindling, J, Trabelsi, A, Vallage, B, Konstantinidis, N, Litke, AM, Taylor, G, Booth, CN, Cartwright, S, Combley, F, Lehto, M, Thompson, LF, Affholderbach, K, Böohrer, A, Brandt, S, Grupen, C, Ngac, A, Prange, G, Sieler, U, Giannini, G, Rothberg, J, Armstrong, SR, Cranmer, K, Elmer, P, Ferguson, DPS, Gao, Y, González, S, Hayes, OJ, Hu, H, Jin, S, Kile, J, McNamara, PA, Nielsen, J, Orejudos, W, Pan, YB, Saadi, Y, Scott, IJ, Walsh, J, Wu, SL, Wu, X & Zobernig, G 2001, 'Measurement of A^b _FBusing inclusive b-hadron decays', European Physical Journal C, vol. 22, no. 2, pp. 201-215. https://doi.org/10.1007/s100520100812

TY - JOUR

T1 - Measurement of Ab FBusing inclusive b-hadron decays

AU - Heister, A.

AU - Schael, S.

AU - Barate, R.

AU - De Bonis, I.

AU - Decamp, D.

AU - Goy, C.

AU - Less, J. P.

AU - Merle, E.

AU - Minard, M. N.

AU - Pietrzyk, B.

AU - Bravo, S.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Graugés, E.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, Ll M.

AU - Pacheco, A.

AU - Ruiz, H.

AU - Colaleo, A.

AU - Creanza, D.

AU - De Palma, M.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, R.

AU - Xue, S.

AU - Zhang, J.

AU - Zhang, L.

AU - Zhao, W.

AU - Abbaneo, D.

AU - Azzurri, P.

AU - Boix, G.

AU - Buchmüller, O.

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PY - 2001/11

Y1 - 2001/11

N2 - Based on a sample of four million events collected by ALEPH from 1991 to 1995, a measurement of the forward-backward asymmetry in Z → bb̄ decays using inclusive final states is presented. High-performance tagging of bb̄ events in a wide angular range is achieved using neural network techniques. An optimal hemisphere charge estimator is built by merging primary and secondary vertex information, leading kaon identification and jet charge in a neural network. The average charge asymmetry, the flavour tagging efficiencies and mean b-hemisphere charges are measured from data and used to extract the pole b asymmetry in the Standard Model A0,b FB= 0.1011 ± 0.0027 (stat) ± 0.0012 (syst), corresponding to a value of the effective weak mixing angle of sin2θeff W= 0.23189 ± 0.00056.

AB - Based on a sample of four million events collected by ALEPH from 1991 to 1995, a measurement of the forward-backward asymmetry in Z → bb̄ decays using inclusive final states is presented. High-performance tagging of bb̄ events in a wide angular range is achieved using neural network techniques. An optimal hemisphere charge estimator is built by merging primary and secondary vertex information, leading kaon identification and jet charge in a neural network. The average charge asymmetry, the flavour tagging efficiencies and mean b-hemisphere charges are measured from data and used to extract the pole b asymmetry in the Standard Model A0,b FB= 0.1011 ± 0.0027 (stat) ± 0.0012 (syst), corresponding to a value of the effective weak mixing angle of sin2θeff W= 0.23189 ± 0.00056.

UR - http://www.scopus.com/inward/record.url?scp=0013160086&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0013160086&partnerID=8YFLogxK

U2 - 10.1007/s100520100812

DO - 10.1007/s100520100812

M3 - Article

AN - SCOPUS:0013160086

SN - 1434-6044

VL - 22

SP - 201

EP - 215

JO - European Physical Journal C

JF - European Physical Journal C

IS - 2

ER -

Measurement of A^b _FBusing inclusive b-hadron decays

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