Measurement of the axial-vector τ spectral functions and determination of αs(M2τ) from hadronic τ decays

R. Barate; D. Buskulic; D. Decamp; P. Ghez; C. Goy; J. P. Lees; A. Lucotte; E. Merle; M. N. Minard; J. Y. Nief; B. Pietrzyk; R. Alemany; G. Boix; M. P. Casado; M. Chmeissani; J. M. Crespo; M. Delfino; E. Fernandez; M. Fernandez-Bosman; L. Garrido; E. Graugès; A. Juste; M. Martinez; G. Merino; R. Miquel; L. M. Mir; I. C. Park; A. Pascual; J. A. Perlas; I. Riu; F. Sanchez; A. Colaleo; D. Creanza; M. de Palma; G. Gelao; 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; U. Becker; P. Bright-Thomas; D. Casper; M. Cattaneo; V. Ciulli; G. Dissertori; H. Drevermann; R. W. Forty; M. Frank; R. Hagelberg; J. B. Hansen; J. Harvey; P. Janot; B. Jost; I. Lehraus; P. Mato; A. Minten; L. Moneta; A. Pacheco; J. F. Pusztaszeri; F. Ranjard; L. Rolandi; D. Rousseau; D. Schlatter; W. Tejessy; F. Teubert; I. R. Tomalin; H. Wachsmuth; A. Wagner; 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. C. Montret; D. Pallin; P. Perret; F. Podlyski; J. Proriol; P. Rosnet; J. D. Hansen; J. R. Hansen; P. H. Hansen; B. S. Nilsson; B. Rensch; A. Wäänänen; G. Daskalakis; A. Kyriakis; C. Markou; E. Simopoulou; I. Siotis; A. Vayaki; A. Blondel; G. Bonneaud; J. C. Brient; P. Bourdon; A. Rougé; M. Rumpf; A. Valassi; M. Verderi; H. Videau; E. Focardi; G. Parrini; K. Zachariadou; M. Corden; C. Georgiopoulos; D. E. 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. P. Murtas; L. Passalacqua; M. Pepe-Altarelli; L. Curtis; A. W. Halley; J. G. Lynch; P. Negus; V. O'Shea; C. Raine; J. M. Scarr; K. Smith; P. Teixeira-Dias; A. S. Thompson; E. Thomson; O. Buchmüller; S. Dhamotharan; C. Geweniger; G. Graefe; 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; S. Goodsir; E. B. Martin; N. Marinelli; A. Moutoussi; J. Nash; J. K. Sedgbeer; P. Spagnolo; M. D. Williams; V. M. Ghete; P. Girtler; E. Kneringer; D. Kuhn; G. Rudolph; A. P. Betteridge; C. K. Bowdery; P. G. Buck; P. Colrain; G. Crawford; A. J. Finch; F. Foster; G. Hughes; R. W.L. Jones; M. I. Williams; I. Giehl; A. M. Greene; C. Hoffmann; K. Jakobs; K. Kleinknecht; G. Quast; B. Renk; E. Rohne; H. G. Sander; P. van Gemmeren; C. Zeitnitz; J. 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. Aleppo; M. Antonelli; F. Ragusa; R. Berlich; W. Blum; V. Büscher; H. Dietl; G. Ganis; H. Kroha; G. Lütjens; C. Mannert; W. Münner; H. G. 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. F. Grivaz; Ph Heusse; A. Hücker; A. Jacholkowska; D. W. Kim; F. Le Diberder; J. Lefrançois; A. M. Lutz; M. H. Schune; E. Tournefier; J. J. Veillet; I. Videau; D. Zerwas; P. Azzurri; G. Bagliesi; G. Batignani; S. Bettarini; T. Boccali; C. Bozzi; G. Calderini; M. Carpinelli; M. A. Ciocci; R. Dell'Orso; R. Fantechi; I. Ferrante; L. Foà; F. Forti; A. Giassi; M. A. Giorgi; A. Gregorio; F. Ligabue; A. Lusiani; P. S. Marrocchesi; A. Messineo; F. Palla; G. Rizzo; G. Sanguinetti; A. Sciabà; R. Tenchini; G. Tonelli; C. Vannini; A. Venturi; P. G. Verdini; G. A. Blair; L. M. Bryant; J. T. Chambers; M. G. Green; T. Medcalf; P. Perrodo; J. A. Strong; J. H. von Wimmersperg-Toeller; D. R. Botterill; R. W. Clifft; T. R. Edgecock; S. Haywood; P. R. Norton; J. C. Thompson; A. E. Wright; B. Bloch-Devaux; P. Colas; S. Emery; W. Kozanecki; E. Lançon; M. C. Lemaire; E. Locci; P. Perez; J. Rander; J. F. Renardy; A. Roussarie; J. P. Schuller; J. Schwindling; A. Trabelsi; B. Vallage; S. N. Black; J. H. Dann; R. P. Johnson; H. Y. Kim; N. Konstantinidis; A. M. Litke; M. A. McNeil; G. Taylor; C. N. Booth; C. A.J. Brew; S. Cartwright; F. Combley; M. S. Kelly; M. Lehto; J. Reeve; L. F. Thompson; K. Affholderbach; A. Böhrer; 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. R. Armstrong; E. Charles; P. Elmer; D. P.S. Ferguson; Y. Gao; S. González; T. C. Greening; O. J. Hayes; H. Hu; S. Jin; P. A. McNamara; J. M. Nachtman; J. Nielsen; W. Orejudos; Y. B. Pan; Y. Saadi; I. J. Scott; J. Walsh; S. L. Wu; X. Wu; G. Zobernig

doi:10.1007/s100529800895

Measurement of the axial-vector τ spectral functions and determination of α_s(M²_τ) from hadronic τ decays

R. Barate
, D. Buskulic
, D. Decamp
, P. Ghez
, C. Goy
, J. P. Lees
, A. Lucotte
, E. Merle
, M. N. Minard
, J. Y. Nief
, B. Pietrzyk
, R. Alemany
, G. Boix
, M. P. Casado
, M. Chmeissani
, J. M. Crespo
, M. Delfino
, E. Fernandez
, M. Fernandez-Bosman
, L. Garrido

E. Graugès, A. Juste, M. Martinez, G. Merino, R. Miquel, L. M. Mir, I. C. Park, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, A. Colaleo, D. Creanza, M. de Palma, G. Gelao, 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, U. Becker, P. Bright-Thomas, D. Casper, M. Cattaneo, V. Ciulli, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. B. Hansen, J. Harvey, P. Janot, B. Jost, I. Lehraus, P. Mato, A. Minten, L. Moneta, A. Pacheco, J. F. Pusztaszeri, F. Ranjard, L. Rolandi, D. Rousseau, D. Schlatter, W. Tejessy, F. Teubert, I. R. Tomalin, H. Wachsmuth, A. Wagner, 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. C. Montret, D. Pallin, P. Perret, F. Podlyski, J. Proriol, P. Rosnet, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, B. Rensch, A. Wäänänen, G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, A. Blondel, G. Bonneaud, J. C. Brient, P. Bourdon, A. Rougé, M. Rumpf, A. Valassi, M. Verderi, H. Videau, E. Focardi, G. Parrini, K. Zachariadou, M. Corden, C. Georgiopoulos, D. E. 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. P. Murtas, L. Passalacqua, M. Pepe-Altarelli, L. Curtis, A. W. Halley, J. G. Lynch, P. Negus, V. O'Shea, C. Raine, J. M. Scarr, K. Smith, P. Teixeira-Dias, A. S. Thompson, E. Thomson, O. Buchmüller, S. Dhamotharan, C. Geweniger, G. Graefe, 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, S. Goodsir, E. B. Martin, N. Marinelli, A. Moutoussi, J. Nash, J. K. Sedgbeer, P. Spagnolo, M. D. Williams, V. M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, A. P. Betteridge, C. K. Bowdery, P. G. Buck, P. Colrain, G. Crawford, A. J. Finch, F. Foster, G. Hughes, R. W.L. Jones, M. I. Williams, I. Giehl, A. M. Greene, C. Hoffmann, K. Jakobs, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. G. Sander, P. van Gemmeren, C. Zeitnitz, J. 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. Aleppo, M. Antonelli, F. Ragusa, R. Berlich, W. Blum, V. Büscher, H. Dietl, G. Ganis, H. Kroha, G. Lütjens, C. Mannert, W. Münner, H. G. 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. F. Grivaz, Ph Heusse, A. Hücker, A. Jacholkowska, D. W. Kim, F. Le Diberder, J. Lefrançois, A. M. Lutz, M. H. Schune, E. Tournefier, J. J. Veillet, I. Videau, D. Zerwas, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, T. Boccali, C. Bozzi, G. Calderini, M. Carpinelli, M. A. Ciocci, R. Dell'Orso, R. Fantechi, I. Ferrante, L. Foà, F. Forti, A. Giassi, M. A. Giorgi, A. Gregorio, F. Ligabue, A. Lusiani, P. S. Marrocchesi, A. Messineo, F. Palla, G. Rizzo, G. Sanguinetti, A. Sciabà, R. Tenchini, G. Tonelli, C. Vannini, A. Venturi, P. G. Verdini, G. A. Blair, L. M. Bryant, J. T. Chambers, M. G. Green, T. Medcalf, P. Perrodo, J. A. Strong, J. H. von Wimmersperg-Toeller, D. R. Botterill, R. W. Clifft, T. R. Edgecock, S. Haywood, P. R. Norton, J. C. Thompson, A. E. Wright, B. Bloch-Devaux, P. Colas, S. Emery, W. Kozanecki, E. Lançon, M. C. Lemaire, E. Locci, P. Perez, J. Rander, J. F. Renardy, A. Roussarie, J. P. Schuller, J. Schwindling, A. Trabelsi, B. Vallage, S. N. Black, J. H. Dann, R. P. Johnson, H. Y. Kim, N. Konstantinidis, A. M. Litke, M. A. McNeil, G. Taylor, C. N. Booth, C. A.J. Brew, S. Cartwright, F. Combley, M. S. Kelly, M. Lehto, J. Reeve, L. F. Thompson, K. Affholderbach, A. Böhrer, 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. R. Armstrong, E. Charles, P. Elmer, D. P.S. Ferguson, Y. Gao, S. González, T. C. Greening, O. J. Hayes, H. Hu, S. Jin, P. A. McNamara, J. M. Nachtman, J. Nielsen, W. Orejudos, Y. B. Pan, Y. Saadi, I. J. Scott, J. Walsh, S. L. Wu, X. Wu, G. Zobernig

Université Paris-Sud
University of São Paulo
University of Barcelona
INFN Sezione di Bari
INFN Sezione di Catania
Institute of High Energy Physics, Chinese Academy of Sciences
European Organization for Nuclear Research
University of Geneva
Cornell University College of Engineering
Schweizerischer Bankverein
Université Blaise Pascal
Niels Bohr Institutet
NCSR Demokritos
University of Florence
Florida State University
LNF-INFN
University of Turin
Ev-K2-CNR Committee
University of Glasgow
University of Heidelberg
Imperial College London
University of Innsbruck
Lancaster University
Johannes Gutenberg University
University of Milano
Max-Planck-Institut für Physik
Laboratoire de l'Accélérateur Linéaire
Kangwon National University
University of Pisa
Harvard University
Dipartimento di Scienze Biomediche
Royal Holloway University of London
Rutherford Appleton Laboratory
Institut Pierre Simon Laplace, CNRS and CEA
University of California at Santa Cruz
The University of Sheffield
Universität Siegen
University of Trieste
University of Washington
University of Wisconsin-Madison
University of California, Los Angeles

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

319 Citations (Scopus)

Abstract

An analysis based on 124 000 selected τ pairs recorded by the ALEPH detector at LEP provides the vector (V) and axial-vector (A) spectral functions of hadronic τ decays together with their total widths. This allows the evaluation of finite energy chiral sum rules that are weighted integrals over the (V - A) spectral functions. In addition, a precise measurement of α_s, along with a determination of non-perturbative contributions at the τ mass scale is performed. The experimentally and theoretically most robust determination of α_s(M_τ²) is obtained from the (V + A) fit that yields α_s (M_τ²) = 0.334 ±0.022 giving α_s (M_Z²) = 0.1202 ± 0.0027 after the extrapolation to the mass of the Z boson. The approach of the Operator Product Expansion (OPE) is tested experimentally studying the evolution of the τ hadronic widths to masses smaller than the τ mass.

Original language	English
Pages (from-to)	409-431
Number of pages	23
Journal	European Physical Journal C
Volume	4
Issue number	3
DOIs	https://doi.org/10.1007/s100529800895
Publication status	Published - 1 Jan 1998

Access to Document

10.1007/s100529800895

Cite this

Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Lucotte, A., Merle, E., Minard, M. N., Nief, J. Y., Pietrzyk, B., Alemany, R., Boix, G., Casado, M. P., Chmeissani, M., Crespo, J. M., Delfino, M., Fernandez, E., Fernandez-Bosman, M., ... Zobernig, G. (1998). Measurement of the axial-vector τ spectral functions and determination of α_s(M²_τ) from hadronic τ decays. European Physical Journal C, 4(3), 409-431. https://doi.org/10.1007/s100529800895

@article{48a84ce685c945fab6f5928790d42678,

title = "Measurement of the axial-vector τ spectral functions and determination of αs(M2τ) from hadronic τ decays",

abstract = "An analysis based on 124 000 selected τ pairs recorded by the ALEPH detector at LEP provides the vector (V) and axial-vector (A) spectral functions of hadronic τ decays together with their total widths. This allows the evaluation of finite energy chiral sum rules that are weighted integrals over the (V - A) spectral functions. In addition, a precise measurement of αs, along with a determination of non-perturbative contributions at the τ mass scale is performed. The experimentally and theoretically most robust determination of αs(Mτ2) is obtained from the (V + A) fit that yields αs (Mτ2) = 0.334 ±0.022 giving αs (MZ2) = 0.1202 ± 0.0027 after the extrapolation to the mass of the Z boson. The approach of the Operator Product Expansion (OPE) is tested experimentally studying the evolution of the τ hadronic widths to masses smaller than the τ mass.",

author = "R. Barate and D. Buskulic and D. Decamp and P. Ghez and C. Goy and Lees, \{J. P.\} and A. Lucotte and E. Merle and Minard, \{M. N.\} and Nief, \{J. Y.\} and B. Pietrzyk and R. Alemany and G. Boix and Casado, \{M. P.\} and M. Chmeissani and Crespo, \{J. M.\} and M. Delfino and E. Fernandez and M. Fernandez-Bosman and L. Garrido and E. Graug{\`e}s and A. Juste and M. Martinez and G. Merino and R. Miquel and Mir, \{L. M.\} and Park, \{I. C.\} and A. Pascual and Perlas, \{J. A.\} and I. Riu and F. Sanchez and A. Colaleo and D. Creanza and \{de Palma\}, M. and G. Gelao 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 U. Becker and P. Bright-Thomas and D. Casper and M. Cattaneo and V. Ciulli and G. Dissertori and H. Drevermann and Forty, \{R. W.\} and M. Frank and R. Hagelberg and Hansen, \{J. B.\} and J. Harvey and P. Janot and B. Jost and I. Lehraus and P. Mato and A. Minten and L. Moneta and A. Pacheco and Pusztaszeri, \{J. F.\} and F. Ranjard and L. Rolandi and D. Rousseau and D. Schlatter and W. Tejessy and F. Teubert and Tomalin, \{I. R.\} and H. Wachsmuth and A. Wagner and Z. Ajaltouni and F. Badaud and G. Chazelle and O. Deschamps and A. Falvard and C. Ferdi and P. Gay and C. Guicheney 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 J. Proriol and P. Rosnet and Hansen, \{J. D.\} and Hansen, \{J. R.\} and Hansen, \{P. H.\} and Nilsson, \{B. S.\} and B. Rensch and A. W{\"a}{\"a}n{\"a}nen and G. Daskalakis and A. Kyriakis and C. Markou and E. Simopoulou and I. Siotis and A. Vayaki and A. Blondel and G. Bonneaud and Brient, \{J. C.\} and P. Bourdon and A. Roug{\'e} and M. Rumpf and A. Valassi and M. Verderi and H. Videau and E. Focardi and G. Parrini and K. Zachariadou and M. Corden and C. Georgiopoulos and Jaffe, \{D. E.\} and A. Antonelli and G. Bencivenni and G. Bologna and F. Bossi and P. Campana and G. Capon and F. Cerutti and V. Chiarella and G. Felici and P. Laurelli and G. Mannocchi and F. Murtas and Murtas, \{G. P.\} and L. Passalacqua and M. Pepe-Altarelli and L. Curtis and Halley, \{A. W.\} and Lynch, \{J. G.\} and P. Negus and V. O'Shea and C. Raine and Scarr, \{J. M.\} and K. Smith and P. Teixeira-Dias and Thompson, \{A. S.\} and E. Thomson and O. Buchm{\"u}ller and S. Dhamotharan and C. Geweniger and G. Graefe 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 S. Goodsir and Martin, \{E. B.\} and N. Marinelli and A. Moutoussi and J. Nash and Sedgbeer, \{J. K.\} and P. Spagnolo and Williams, \{M. D.\} and Ghete, \{V. M.\} and P. Girtler and E. Kneringer and D. Kuhn and G. Rudolph and Betteridge, \{A. P.\} and Bowdery, \{C. K.\} and Buck, \{P. G.\} and P. Colrain and G. Crawford and Finch, \{A. J.\} and F. Foster and G. Hughes and Jones, \{R. W.L.\} and Williams, \{M. I.\} and I. Giehl and Greene, \{A. M.\} and C. Hoffmann and K. Jakobs and K. Kleinknecht and G. Quast and B. Renk and E. Rohne and Sander, \{H. G.\} and \{van Gemmeren\}, P. and C. Zeitnitz and Aubert, \{J. J.\} and C. Benchouk and A. Bonissent and G. Bujosa and J. Carr and P. Coyle and F. Etienne and O. Leroy and F. Motsch and P. Payre and M. Talby and A. Sadouki and M. Thulasidas and K. Trabelsi and M. Aleppo and M. Antonelli and F. Ragusa and R. Berlich and W. Blum and V. B{\"u}scher and H. Dietl and G. Ganis and H. Kroha and G. L{\"u}tjens and C. Mannert and W. M{\"u}nner and Moser, \{H. G.\} and S. Schael and R. Settles and H. Seywerd and H. Stenzel and W. Wiedenmann and G. Wolf and J. Boucrot and O. Callot and S. Chen and A. Cordier and M. Davier and L. Duflot and Grivaz, \{J. F.\} and Ph Heusse and A. H{\"u}cker and A. Jacholkowska and Kim, \{D. W.\} and \{Le Diberder\}, F. and J. Lefran{\c c}ois and Lutz, \{A. M.\} and Schune, \{M. H.\} and E. Tournefier and Veillet, \{J. J.\} and I. Videau and D. Zerwas and P. Azzurri and G. Bagliesi and G. Batignani and S. Bettarini and T. Boccali and C. Bozzi and G. Calderini and M. Carpinelli and Ciocci, \{M. A.\} and R. Dell'Orso and R. Fantechi and I. Ferrante and L. Fo{\`a} and F. Forti and A. Giassi and Giorgi, \{M. A.\} and A. Gregorio and F. Ligabue and A. Lusiani and Marrocchesi, \{P. S.\} and A. Messineo and F. Palla and G. Rizzo and G. Sanguinetti and A. Sciab{\`a} and R. Tenchini and G. Tonelli and C. Vannini and A. Venturi and Verdini, \{P. G.\} and Blair, \{G. A.\} and Bryant, \{L. M.\} and Chambers, \{J. T.\} and Green, \{M. G.\} and T. Medcalf and P. Perrodo and Strong, \{J. A.\} and \{von Wimmersperg-Toeller\}, \{J. H.\} and Botterill, \{D. R.\} and Clifft, \{R. W.\} and Edgecock, \{T. R.\} and S. Haywood and Norton, \{P. R.\} and Thompson, \{J. C.\} and Wright, \{A. E.\} and B. Bloch-Devaux and P. Colas and S. Emery and W. Kozanecki and E. Lan{\c c}on 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 Black, \{S. N.\} and Dann, \{J. H.\} and Johnson, \{R. P.\} and Kim, \{H. Y.\} and N. Konstantinidis and Litke, \{A. M.\} and McNeil, \{M. A.\} and G. Taylor and Booth, \{C. N.\} and Brew, \{C. A.J.\} and S. Cartwright and F. Combley and Kelly, \{M. S.\} and M. Lehto and J. Reeve and Thompson, \{L. F.\} and K. Affholderbach and A. B{\"o}hrer and S. Brandt and G. Cowan and C. Grupen and P. Saraiva and L. Smolik and F. Stephan and M. Apollonio and L. Bosisio and \{della Marina\}, R. and G. Giannini and B. Gobbo and G. Musolino and J. Rothberg and S. Wasserbaech and Armstrong, \{S. R.\} and E. Charles and P. Elmer and Ferguson, \{D. P.S.\} and Y. Gao and S. Gonz{\'a}lez and Greening, \{T. C.\} and Hayes, \{O. J.\} and H. Hu and S. Jin and McNamara, \{P. A.\} and Nachtman, \{J. M.\} 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 = "1998",

month = jan,

day = "1",

doi = "10.1007/s100529800895",

language = "English",

volume = "4",

pages = "409--431",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "3",

}

Barate, R, Buskulic, D, Decamp, D, Ghez, P, Goy, C, Lees, JP, Lucotte, A, Merle, E, Minard, MN, Nief, JY, Pietrzyk, B, Alemany, R, Boix, G, Casado, MP, Chmeissani, M, Crespo, JM, Delfino, M, Fernandez, E, Fernandez-Bosman, M, Garrido, L, Graugès, E, Juste, A, Martinez, M, Merino, G, Miquel, R, Mir, LM, Park, IC, Pascual, A, Perlas, JA, Riu, I, Sanchez, F, Colaleo, A, Creanza, D, de Palma, M, Gelao, G, 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, Becker, U, Bright-Thomas, P, Casper, D, Cattaneo, M, Ciulli, V, Dissertori, G, Drevermann, H, Forty, RW, Frank, M, Hagelberg, R, Hansen, JB, Harvey, J, Janot, P, Jost, B, Lehraus, I, Mato, P, Minten, A, Moneta, L, Pacheco, A, Pusztaszeri, JF, Ranjard, F, Rolandi, L, Rousseau, D, Schlatter, D, Tejessy, W, Teubert, F, Tomalin, IR, Wachsmuth, H, Wagner, A, 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, JC, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rosnet, P, Hansen, JD, Hansen, JR, Hansen, PH, Nilsson, BS, Rensch, B, Wäänänen, A, Daskalakis, G, Kyriakis, A, Markou, C, Simopoulou, E, Siotis, I, Vayaki, A, Blondel, A, Bonneaud, G, Brient, JC, Bourdon, P, Rougé, A, Rumpf, M, Valassi, A, Verderi, M, Videau, H, Focardi, E, Parrini, G, Zachariadou, K, Corden, M, Georgiopoulos, C, Jaffe, DE, 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, GP, Passalacqua, L, Pepe-Altarelli, M, Curtis, L, Halley, AW, Lynch, JG, Negus, P, O'Shea, V, Raine, C, Scarr, JM, Smith, K, Teixeira-Dias, P, Thompson, AS, Thomson, E, Buchmüller, O, Dhamotharan, S, Geweniger, C, Graefe, G, 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, Goodsir, S, Martin, EB, Marinelli, N, Moutoussi, A, Nash, J, Sedgbeer, JK, Spagnolo, P, Williams, MD, Ghete, VM, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Betteridge, AP, Bowdery, CK, Buck, PG, Colrain, P, Crawford, G, Finch, AJ, Foster, F, Hughes, G, Jones, RWL, Williams, MI, Giehl, I, Greene, AM, Hoffmann, C, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, HG, van Gemmeren, P, Zeitnitz, C, Aubert, JJ, 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, Antonelli, M, Ragusa, F, Berlich, R, Blum, W, Büscher, V, Dietl, H, Ganis, G, Kroha, H, Lütjens, G, Mannert, C, Münner, W, Moser, HG, 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, JF, Heusse, P, Hücker, A, Jacholkowska, A, Kim, DW, Le Diberder, F, Lefrançois, J, Lutz, AM, Schune, MH, Tournefier, E, Veillet, JJ, Videau, I, Zerwas, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Boccali, T, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, MA, Dell'Orso, R, Fantechi, R, Ferrante, I, Foà, L, Forti, F, Giassi, A, Giorgi, MA, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, PS, Messineo, A, Palla, F, Rizzo, G, Sanguinetti, G, Sciabà, A, Tenchini, R, Tonelli, G, Vannini, C, Venturi, A, Verdini, PG, Blair, GA, Bryant, LM, Chambers, JT, Green, MG, Medcalf, T, Perrodo, P, Strong, JA, von Wimmersperg-Toeller, JH, Botterill, DR, Clifft, RW, Edgecock, TR, Haywood, S, Norton, PR, Thompson, JC, Wright, AE, Bloch-Devaux, B, Colas, P, Emery, S, Kozanecki, W, Lançon, E, Lemaire, MC, Locci, E, Perez, P, Rander, J, Renardy, JF, Roussarie, A, Schuller, JP, Schwindling, J, Trabelsi, A, Vallage, B, Black, SN, Dann, JH, Johnson, RP, Kim, HY, Konstantinidis, N, Litke, AM, McNeil, MA, Taylor, G, Booth, CN, Brew, CAJ, Cartwright, S, Combley, F, Kelly, MS, Lehto, M, Reeve, J, Thompson, LF, Affholderbach, K, Böhrer, 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, SR, Charles, E, Elmer, P, Ferguson, DPS, Gao, Y, González, S, Greening, TC, Hayes, OJ, Hu, H, Jin, S, McNamara, PA, Nachtman, JM, Nielsen, J, Orejudos, W, Pan, YB, Saadi, Y, Scott, IJ, Walsh, J, Wu, SL, Wu, X & Zobernig, G 1998, 'Measurement of the axial-vector τ spectral functions and determination of α_s(M²_τ) from hadronic τ decays', European Physical Journal C, vol. 4, no. 3, pp. 409-431. https://doi.org/10.1007/s100529800895

TY - JOUR

T1 - Measurement of the axial-vector τ spectral functions and determination of αs(M2τ) from hadronic τ decays

AU - Barate, R.

AU - Buskulic, D.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Lucotte, A.

AU - Merle, E.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Pietrzyk, B.

AU - Alemany, R.

AU - Boix, G.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, L.

AU - Graugès, E.

AU - Juste, A.

AU - Martinez, M.

AU - Merino, G.

AU - Miquel, R.

AU - Mir, L. M.

AU - Park, I. C.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Riu, I.

AU - Sanchez, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Gelao, G.

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 - Becker, U.

AU - Bright-Thomas, P.

AU - Casper, D.

AU - Cattaneo, M.

AU - Ciulli, V.

AU - Dissertori, G.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Frank, M.

AU - Hagelberg, R.

AU - Hansen, J. B.

AU - Harvey, J.

AU - Janot, P.

AU - Jost, B.

AU - Lehraus, I.

AU - Mato, P.

AU - Minten, A.

AU - Moneta, L.

AU - Pacheco, A.

AU - Pusztaszeri, J. F.

AU - Ranjard, F.

AU - Rolandi, L.

AU - Rousseau, D.

AU - Schlatter, D.

AU - Tejessy, W.

AU - Teubert, F.

AU - Tomalin, I. R.

AU - Wachsmuth, H.

AU - Wagner, A.

AU - Ajaltouni, Z.

AU - Badaud, F.

AU - Chazelle, G.

AU - Deschamps, O.

AU - Falvard, A.

AU - Ferdi, C.

AU - Gay, P.

AU - Guicheney, C.

AU - Henrard, P.

AU - Jousset, J.

AU - Michel, B.

AU - Monteil, S.

AU - Montret, J. C.

AU - Pallin, D.

AU - Perret, P.

AU - Podlyski, F.

AU - Proriol, J.

AU - Rosnet, P.

AU - Hansen, J. D.

AU - Hansen, J. R.

AU - Hansen, P. H.

AU - Nilsson, B. S.

AU - Rensch, B.

AU - Wäänänen, A.

AU - Daskalakis, G.

AU - Kyriakis, A.

AU - Markou, C.

AU - Simopoulou, E.

AU - Siotis, I.

AU - Vayaki, A.

AU - Blondel, A.

AU - Bonneaud, G.

AU - Brient, J. C.

AU - Bourdon, P.

AU - Rougé, A.

AU - Rumpf, M.

AU - Valassi, A.

AU - Verderi, M.

AU - Videau, H.

AU - Focardi, E.

AU - Parrini, G.

AU - Zachariadou, K.

AU - Corden, M.

AU - Georgiopoulos, C.

AU - Jaffe, D. E.

AU - Antonelli, A.

AU - Bencivenni, G.

AU - Bologna, G.

AU - Bossi, F.

AU - Campana, P.

AU - Capon, G.

AU - Cerutti, F.

AU - Chiarella, V.

AU - Felici, G.

AU - Laurelli, P.

AU - Mannocchi, G.

AU - Murtas, F.

AU - Murtas, G. P.

AU - Passalacqua, L.

AU - Pepe-Altarelli, M.

AU - Curtis, L.

AU - Halley, A. W.

AU - Lynch, J. G.

AU - Negus, P.

AU - O'Shea, V.

AU - Raine, C.

AU - Scarr, J. M.

AU - Smith, K.

AU - Teixeira-Dias, P.

AU - Thompson, A. S.

AU - Thomson, E.

AU - Buchmüller, O.

AU - Dhamotharan, S.

AU - Geweniger, C.

AU - Graefe, G.

AU - Hanke, P.

AU - Hansper, G.

AU - Hepp, V.

AU - Kluge, E. E.

AU - Putzer, A.

AU - Sommer, J.

AU - Tittel, K.

AU - Werner, S.

AU - Wunsch, M.

AU - Beuselinck, R.

AU - Binnie, D. M.

AU - Cameron, W.

AU - Dornan, P. J.

AU - Girone, M.

AU - Goodsir, S.

AU - Martin, E. B.

AU - Marinelli, N.

AU - Moutoussi, A.

AU - Nash, J.

AU - Sedgbeer, J. K.

AU - Spagnolo, P.

AU - Williams, M. D.

AU - Ghete, V. M.

AU - Girtler, P.

AU - Kneringer, E.

AU - Kuhn, D.

AU - Rudolph, G.

AU - Betteridge, A. P.

AU - Bowdery, C. K.

AU - Buck, P. G.

AU - Colrain, P.

AU - Crawford, G.

AU - Finch, A. J.

AU - Foster, F.

AU - Hughes, G.

AU - Jones, R. W.L.

AU - Williams, M. I.

AU - Giehl, I.

AU - Greene, A. M.

AU - Hoffmann, C.

AU - Jakobs, K.

AU - Kleinknecht, K.

AU - Quast, G.

AU - Renk, B.

AU - Rohne, E.

AU - Sander, H. G.

AU - van Gemmeren, P.

AU - Zeitnitz, C.

AU - Aubert, J. J.

AU - Benchouk, C.

AU - Bonissent, A.

AU - Bujosa, G.

AU - Carr, J.

AU - Coyle, P.

AU - Etienne, F.

AU - Leroy, O.

AU - Motsch, F.

AU - Payre, P.

AU - Talby, M.

AU - Sadouki, A.

AU - Thulasidas, M.

AU - Trabelsi, K.

AU - Aleppo, M.

AU - Antonelli, M.

AU - Ragusa, F.

AU - Berlich, R.

AU - Blum, W.

AU - Büscher, V.

AU - Dietl, H.

AU - Ganis, G.

AU - Kroha, H.

AU - Lütjens, G.

AU - Mannert, C.

AU - Münner, W.

AU - Moser, H. G.

AU - Schael, S.

AU - Settles, R.

AU - Seywerd, H.

AU - Stenzel, H.

AU - Wiedenmann, W.

AU - Wolf, G.

AU - Boucrot, J.

AU - Callot, O.

AU - Chen, S.

AU - Cordier, A.

AU - Davier, M.

AU - Duflot, L.

AU - Grivaz, J. F.

AU - Heusse, Ph

AU - Hücker, A.

AU - Jacholkowska, A.

AU - Kim, D. W.

AU - Le Diberder, F.

AU - Lefrançois, J.

AU - Lutz, A. M.

AU - Schune, M. H.

AU - Tournefier, E.

AU - Veillet, J. J.

AU - Videau, I.

AU - Zerwas, D.

AU - Azzurri, P.

AU - Bagliesi, G.

AU - Batignani, G.

AU - Bettarini, S.

AU - Boccali, T.

AU - Bozzi, C.

AU - Calderini, G.

AU - Carpinelli, M.

AU - Ciocci, M. A.

AU - Dell'Orso, R.

AU - Fantechi, R.

AU - Ferrante, I.

AU - Foà, L.

AU - Forti, F.

AU - Giassi, A.

AU - Giorgi, M. A.

AU - Gregorio, A.

AU - Ligabue, F.

AU - Lusiani, A.

AU - Marrocchesi, P. S.

AU - Messineo, A.

AU - Palla, F.

AU - Rizzo, G.

AU - Sanguinetti, G.

AU - Sciabà, A.

AU - Tenchini, R.

AU - Tonelli, G.

AU - Vannini, C.

AU - Venturi, A.

AU - Verdini, P. G.

AU - Blair, G. A.

AU - Bryant, L. M.

AU - Chambers, J. T.

AU - Green, M. G.

AU - Medcalf, T.

AU - Perrodo, P.

AU - Strong, J. A.

AU - von Wimmersperg-Toeller, J. H.

AU - Botterill, D. R.

AU - Clifft, R. W.

AU - Edgecock, T. R.

AU - Haywood, S.

AU - Norton, P. R.

AU - Thompson, J. C.

AU - Wright, A. E.

AU - Bloch-Devaux, B.

AU - Colas, P.

AU - Emery, S.

AU - Kozanecki, W.

AU - Lançon, E.

AU - Lemaire, M. C.

AU - Locci, E.

AU - Perez, P.

AU - Rander, J.

AU - Renardy, J. F.

AU - Roussarie, A.

AU - Schuller, J. P.

AU - Schwindling, J.

AU - Trabelsi, A.

AU - Vallage, B.

AU - Black, S. N.

AU - Dann, J. H.

AU - Johnson, R. P.

AU - Kim, H. Y.

AU - Konstantinidis, N.

AU - Litke, A. M.

AU - McNeil, M. A.

AU - Taylor, G.

AU - Booth, C. N.

AU - Brew, C. A.J.

AU - Cartwright, S.

AU - Combley, F.

AU - Kelly, M. S.

AU - Lehto, M.

AU - Reeve, J.

AU - Thompson, L. F.

AU - Affholderbach, K.

AU - Böhrer, A.

AU - Brandt, S.

AU - Cowan, G.

AU - Grupen, C.

AU - Saraiva, P.

AU - Smolik, L.

AU - Stephan, F.

AU - Apollonio, M.

AU - Bosisio, L.

AU - della Marina, R.

AU - Giannini, G.

AU - Gobbo, B.

AU - Musolino, G.

AU - Rothberg, J.

AU - Wasserbaech, S.

AU - Armstrong, S. R.

AU - Charles, E.

AU - Elmer, P.

AU - Ferguson, D. P.S.

AU - Gao, Y.

AU - González, S.

AU - Greening, T. C.

AU - Hayes, O. J.

AU - Hu, H.

AU - Jin, S.

AU - McNamara, P. A.

AU - Nachtman, J. M.

AU - Nielsen, J.

AU - Orejudos, W.

AU - Pan, Y. B.

AU - Saadi, Y.

AU - Scott, I. J.

AU - Walsh, J.

AU - Wu, S. L.

AU - Wu, X.

AU - Zobernig, G.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - An analysis based on 124 000 selected τ pairs recorded by the ALEPH detector at LEP provides the vector (V) and axial-vector (A) spectral functions of hadronic τ decays together with their total widths. This allows the evaluation of finite energy chiral sum rules that are weighted integrals over the (V - A) spectral functions. In addition, a precise measurement of αs, along with a determination of non-perturbative contributions at the τ mass scale is performed. The experimentally and theoretically most robust determination of αs(Mτ2) is obtained from the (V + A) fit that yields αs (Mτ2) = 0.334 ±0.022 giving αs (MZ2) = 0.1202 ± 0.0027 after the extrapolation to the mass of the Z boson. The approach of the Operator Product Expansion (OPE) is tested experimentally studying the evolution of the τ hadronic widths to masses smaller than the τ mass.

AB - An analysis based on 124 000 selected τ pairs recorded by the ALEPH detector at LEP provides the vector (V) and axial-vector (A) spectral functions of hadronic τ decays together with their total widths. This allows the evaluation of finite energy chiral sum rules that are weighted integrals over the (V - A) spectral functions. In addition, a precise measurement of αs, along with a determination of non-perturbative contributions at the τ mass scale is performed. The experimentally and theoretically most robust determination of αs(Mτ2) is obtained from the (V + A) fit that yields αs (Mτ2) = 0.334 ±0.022 giving αs (MZ2) = 0.1202 ± 0.0027 after the extrapolation to the mass of the Z boson. The approach of the Operator Product Expansion (OPE) is tested experimentally studying the evolution of the τ hadronic widths to masses smaller than the τ mass.

U2 - 10.1007/s100529800895

DO - 10.1007/s100529800895

M3 - Article

AN - SCOPUS:0040587122

SN - 1434-6044

VL - 4

SP - 409

EP - 431

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

ER -

Measurement of the axial-vector τ spectral functions and determination of αs(M2τ) from hadronic τ decays

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Measurement of the axial-vector τ spectral functions and determination of α_s(M²_τ) from hadronic τ decays