W. Blum
Max Planck Society
192 Papers
868 Citations
W. Blum is an academic researcher from Max Planck Society. The author has contributed to research in topics: ALEPH experiment & Electron–positron annihilation. The author has an hindex of 39, co-authored 192 publications.
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Papers
ππ Phase-shift analysis from 600 to 1900 MeV
B.D. Hyams,C. Jones,P. Weilhammer,W. Blum,H. Dietl,G. Grayer,W. Koch,E. Lorenz,G. Lütjens,W. Männer,J. Meissburger,Wolfgang Ochs,U. Stierlin,F. Wagner +13 more
TL;DR: In this article, an energy-dependent and an energyindependent analysis of elastic ππ scattering was performed using data for the reaction π−p → π −π+n at 17.2 GeV/c.
539
Studies of quantum chromodynamics with the ALEPH detector
R. Barate,D. Buskulic,D. Decamp,Philippe Ghez,C. Goy,J. P. Lees,Arnaud Lucotte,M-N Minard,J.Y. Nief,Philippe Odier,B. Pietrzyk,Maria Pilar Casado,M. Chmeissani,P. Comas,J. M. Crespo,Manuel Delfino,E. Fernandez,M. Fernandez-Bosman,Ll. Garrido,A. Juste,M. I. Martínez,S. Orteu,C. Padilla,Inkyu Park,A. Pascual,J. A. Perlas,Imma Riu,Federico Sanchez,F. Teubert,Anna Colaleo,Donato Creanza,M. De Palma,G. Gelao,Giuseppe Iaselli,Giorgio Maggi,Mario Maggi,Nancy Marinelli,Salvatore Nuzzo,A. Ranieri,Giuseppe Raso,F. Ruggieri,Giovanna Selvaggi,Lucia Silvestris,P. Tempesta,Alessia Tricomi,G. Zito,X. Huang,J. Lin,Q. Ouyang,Ting-Chi Wang,Yuehong Xie,R. Xu,S. Xue,Jie Zhang,L. Zhang,W. Zhao,Duccio Abbaneo,R. Alemany,A.O. Bazarko,P.G. Bright-Thomas,Marco Cattaneo,Fabio Cerutti,H. Drevermann,R. W. Forty,Markus Frank,R. Hagelberg,J. Harvey,Patrick Janot,B. Jost,Emmerich Kneringer,J. Knobloch,I. Lehraus,Thomas Lohse,G. Lutters,P. Mato,A. Minten,Ramon Miquel,Ll.M. Mir,Lorenzo Moneta,T. Oest,A. Pacheco,J. F. Pusztaszeri,F. Ranjard,P. Rensing,G. Rizzo,L. Rolandi,D. Schlatter,M. Schmelling,Michael Schmitt,O. Schneider,W. Tejessy,Ian R Tomalin,Andrea Venturi,H. Wachsmuth,A. Wagner,Ziad Ajaltouni,A. Barres,C. Boyer,Alain Falvard,C. Ferdi,C. Guicheney,P. Henrard,J. Jousset,B. Michel,S. Monteil,Jean-Claude Montret,Dominique Pallin,P. Perret,F. Podlyski,Joseph Proriol,Philippe Rosnet,J. M. Rossignol,T. Fearnley,Jørgen Beck Hansen,J.D. Hansen,J.R. Hansen,P. H. Hansen,B. S. Nilsson,B. Rensch,A. Wäänänen,Georgios Daskalakis,Aristotelis Kyriakis,C. Markou,E. Simopoulou,I. Siotis,A. Vayaki,K. Zachariadou,A. Blondel,G. R. Bonneaud,J. C. Brient,P. Bourdon,A. Rougé,M. Rumpf,A. Valassi,M. Verderi,H. Videau,D.J. Candlin,M.I. Parsons,Ettore Focardi,G. Parrini,M. Corden,C. Georgiopoulos,D. E. Jaffe,A. Antonelli,G. Bencivenni,G. Bologna,F. Bossi,P. Campana,G. Capon,D. Casper,V. Chiarella,G. Felici,Paolo Laurelli,G. Mannocchi,F. Murtas,G. P. Murtas,L. Passalacqua,M. Pepe-Altarelli,L. Curtis,S. J. Dorris,A. W. Halley,I. G. Knowles,J. G. Lynch,Val O'Shea,C. Raine,P. Reeves,J. M. Scarr,Kevin M. Smith,P. Teixeira-Dias,A. S. Thompson,Evelyn Thomson,F. Thomson,R. M. Turnbull,U. Becker,O. Buchmüller,C. Geweniger,G. Graefe,P. Hanke,G. Hansper,H. Hepp,V. Hepp,E. E. Kluge,A. Putzer,M.G. Schmidt,J. Sommer,Hasko Stenzel,K. Tittel,S. Werner,M. Wunsch,R. Beuselinck,D. M. Binnie,W. Cameron,P. J. Dornan,M. Girone,S. Goodsir,Eb Martin,A. Moutoussi,Jordan Nash,J. K. Sedgbeer,A. M. Stacey,M.D. Williams,G. Dissertori,A. Hörtnagl,D. Kuhn,Louis Marié,G. Rudolph,A. P. Betteridge,C. K. Bowdery,P. Colrain,G. Crawford,A. J. Finch,F. Foster,G. Hughes,T. J. Sloan,M. I. Williams,T. Barczewski,A. Galla,I. Giehl,A. M. Greene,C. Hoffmann,Karl Jakobs,Konrad Kleinknecht,Gunter Quast,B. Renk,E. Rohne,H. G. Sander,H. Schmidt,F. Steeg,P. van Gemmeren,Christian Zeitnitz,J. J. Aubert,C. Benchouk,A. Bonissent,G. Bujosa,David Calvet,J. Carr,P. Coyle,Cristinel Diaconu,F. Etienne,Nikolaos Konstantinidis,Olivier Leroy,P. Payre,David Rousseau,Mossadek Talby,A. Sadouki,M. Thulasidas,K. Trabelsi,M. Aleppo,F. Ragusa,R. Berlich,W. Blum,V. Büscher,H. Dietl,F. Dydak,G. Ganis,C. Gotzhein,Hubert Kroha,G. Lütjens,G. Lutz,W. Männer,H. G. Moser,Robert Richter,A. Rosado-Schlosser,S. Schael,R. Settles,H. Seywerd,R. St. Denis,Werner Wiedenmann,Gy. Wolf,J. Boucrot,O. Callot,Shaomin Chen,Young-Il Choi,A. Cordier,M. Davier,Laurent Duflot,Jean-Francois Grivaz,Ph Heusse,A. Hocker,A. Jacholkowska,M. Jacquet,D. W. Kim,F. Le Diberder,J. Lefrançois,A. M. Lutz,I. Nikolic,H.J. Park,M. H. Schune,Stefan Simion,J. J. Veillet,I. Videau,Dirk Zerwas,Paolo Azzurri,Giuseppe Bagliesi,G. Batignani,S. Bettarini,C. Bozzi,G. Calderini,M. Carpinelli,Maria Agnese Ciocci,Vitaliano Ciulli,Roberto Dell'Orso,R. Fantechi,I. Ferrante,Lorenzo Foà,F. Forti,Alessandro Giassi,Mario Giorgi,A. Gregorio,Franco Ligabue,A. Lusiani,P. S. Marrocchesi,Alberto Messineo,Fabrizio Palla,G. Sanguinetti,Andrea Sciabà,Paolo Spagnolo,J. Steinberger,Roberto Tenchini,Guido Tonelli,C. Vannini,Piero Giorgio Verdini,G.A. Blair,L. M. Bryant,J.T. Chambers,Yang Gao,M. G. Green,T. Medcalf,P. Perrodo,J. A. Strong,J.H. von Wimmersperg-Toeller,V. Bertin,D. R. Botterill,R. W. Clifft,T. R. Edgecock,Stephen Haywood,P. Maley,P. R. Norton,J.C. Thompson,A.E. Wright,B. Bloch-Devaux,P. Colas,S. Emery,W. Kozanecki,Eric Lancon,M. C. Lemaire,Elizabeth Locci,Pablo Rodriguez Perez,John 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,Alan Litke,M. A. McNeil,G. B. Taylor,A. Beddall,C. N. Booth,R. Boswell,Christopher Brew,S. L. Cartwright,F. Combley,Ian Dawson,M.S. Kelly,M H. Lehto,W. M. Newton,J. Reeve,L. F. Thompson,A. Böhrer,S. Brandt,G. A. Cowan,E. Feigl,Claus Grupen,J. Minguet-Rodriguez,F. Rivera,P. Saraiva,L. Smolik,F. Stephan,M. Apollonio,L. Bosisio,R. Delia Marina,G. Giannini,B. Gobbo,G. Musolino,J. Rothberg,S. Wasserbaech,S.R. Armstrong,Peter Elmer,Z. Y. Feng,D.P.S. Ferguson,Y. S. Gao,S. Gonzalez,J. Grahl,T.C. Greening,O.J. Hayes,H. Hu,P. A. McNamara,Jane Nachtman,W. Orejudos,Y. B. Pan,Y. Saadi,I.J. Scott,J. Walsh,Sau Lan Wu,Xin Wu,J.M. Yamartino,M. Zheng,G. Zobernig +413 more
TL;DR: In this article, the ALEPH detector at LEP1 has been used for detailed studies of both perturbative and non-perturbative aspects of strong interactions to be carried out using hadronic Z and tau decays.
235
Measurement and analysis of the π+π+ system produced at small momentum transfer in the reaction π+p→π+π+n at 12.5 GeV
W. Hoogland,S. Peters,G. Grayer,B.D. Hyams,P. Weilhammer,W. Blum,H. Dietl,G. Hentschel,W. Koch,E. Lorenz,G. Lütjens,G. Lutz,W. Männer,Ralf P. Richter,U. Stierlin +14 more
TL;DR: In this paper, the I = 2 phase shifts were determined in the π+ π + mass region 0.3 − 1.5 GeV, compared with some theoretical predictions.
191
Measurement of Lambda polarization from Z decays
D. Buskulic,I. De Bonis,D. Decamp,Philippe Ghez,C. Goy,J. P. Lees,Arnaud Lucotte,M. N. Minard,Philippe Odier,B. Pietrzyk,M. Chmeissani,J. M. Crespo,M. Delfino,I. Efthymiopoulos,E. Fernandez,M. Fernandez-Bosman,L. Garrido,A. Juste,M. Martinez,S. Orteu,A. Pacheco,C. Padilla,Fabrizio Palla,A. Pascual,J. A. Perlas,Imma Riu,F. Sanchez,F. Teubert,Anna Colaleo,Donato Creanza,M. De Palma,A. Farilla,G. Gelao,Maria Girone,Giuseppe Iaselli,Giorgio Maggi,Mario Maggi,Nancy Marinelli,S. Natali,Salvatore Nuzzo,A. Ranieri,Giuseppe Raso,F. Romano,F. Ruggieri,Giovanna Selvaggi,Lucia Silvestris,P. Tempesta,Giuseppe Zito,X. Huang,Jiali Lin,Q. Ouyang,Ta-Wei Wang,Yuehong Xie,R. Xu,S. Xue,Jie Zhang,L. Zhang,W. Zhao,R. Alemany,A.O. Bazarko,G. Bonvicini,Marco Cattaneo,P. Comas,P. Coyle,H. Drevermann,Roger Forty,Markus Frank,R. Hagelberg,John T Harvey,R. G. Jacobsen,Patrick Janot,B. Jost,Emmerich Kneringer,J. Knobloch,I. Lehraus,E. B. Martin,P. Mato,A. Minten,Ramon Miquel,L. M. Mir,L. Moneta,T. Oest,P. Palazzi,Joleen Pater,J. F. Pusztaszeri,F. Ranjard,P. Rensing,L. Rolandi,D. Schlatter,M. Schmelling,O. Schneider,W. Tejessy,Ian R Tomalin,Andrea Venturi,H. Wachsmuth,A. Wagner,T. Wildish,W. Witzeling,Jorg Wotschack,Ziad Ajaltouni,A. Barres,C. Boyer,Alain Falvard,C. Guicheney,Pierre Henrard,J. Jousset,B. Michel,S. Monteil,Jean-Claude Montret,Dominique Pallin,Pascal Perret,F. Podlyski,Joseph Proriol,J. M. Rossignol,T. Fearnley,Jørgen Beck Hansen,J.D. Hansen,J.R. Hansen,Peter Hansen,B.S. Nilsson,A. Wäänänen,Aristotelis Kyriakis,C. Markou,E. Simopoulou,I. Siotis,A. Vayaki,K. Zachariadou,A. Blondel,G. R. Bonneaud,J. C. Brient,P. Bourdon,A. Rougé,M. Rumpf,R. Tanaka,A. Valassi,M. Verderi,H. Videau,D.J. Candlin,M.I. Parsons,Ettore Focardi,G. Parrini,M. Corden,C. Georgiopoulos,D. E. Jaffe,A. Antonelli,G. Bencivenni,G. Bologna,F. Bossi,Pierluigi Campana,G. Capon,D. Casper,V. Chiarella,G. Felici,Paolo Laurelli,G. Mannocchi,F. Murtas,G.P. Murtas,L. Passalacqua,M. Pepe-Altarelli,L. Curtis,S. J. Dorris,A. W. Halley,I. G. Knowles,J.G. Lynch,Val O'Shea,C. Raine,P. Reeves,J. M. Scarr,Kevin M. Smith,A. S. Thompson,F. Thomson,S. Thorn,R. M. Turnbull,U. Becker,C. Geweniger,G. Graefe,Paul Hanke,V. Hepp,E. E. Kluge,A. Putzer,B. Rensch,M.G. Schmidt,J. Sommer,Hasko Stenzel,K. Tittel,S. Werner,M. Wunsch,Duccio Abbaneo,R. Beuselinck,D. M. Binnie,W. Cameron,P. J. Dornan,A. Moutoussi,Jordan Nash,G. San Martin,J. K. Sedgbeer,A. M. Stacey,M.D. Williams,G. Dissertori,P. Girtler,D. Kuhn,G. Rudolph,C. K. Bowdery,T. J. Brodbeck,P. Colrain,G. Crawford,Alexander Finch,F. Foster,G. Hughes,T. J. Sloan,E. P. Whelan,M. I. Williams,A. Galla,A. M. Greene,Konrad Kleinknecht,Gunter Quast,B. Renk,E. Rohne,H. G. Sander,R. Wanke,P. van Gemmeren,Christian Zeitnitz,J. J. Aubert,A. M. Bencheikh,C. Benchouk,A. Bonissent,G. Bujosa,David Calvet,J. Carr,Cristinel Diaconu,F. Etienne,Nikolaos Konstantinidis,D. Nicod,P. Payre,David Rousseau,A. Sadouki,Mossadek Talby,M. Thulasidas,K. Trabelsi,I. Abt,R W Assmann,Christian Bauer,W. Blum,H. Dietl,F. Dydak,Gerardo Ganis,C. Gotzhein,K. Jakobs,Hubert Kroha,G. Lütjens,G. Lutz,W. Männer,H. G. Moser,Robert Richter,A. Rosado-Schlosser,S. Schael,R. Settles,H. Seywerd,Werner Wiedenmann,Gy. Wolf,J. Boucrot,O. Callot,A. Cordier,M. Davier,Laurent Duflot,Jean-Francois Grivaz,Ph. Heusse,M. Jacquet,D. W. Kim,F. Le Diberder,J. Lefrançois,A. M. Lutz,I. Nikolic,H.J. Park,I. C. Park,M. H. Schune,Stefan Simion,J. J. Veillet,I. Videau,Paolo Azzurri,Giuseppe Bagliesi,G. Batignani,S. Bettarini,C. Bozzi,G. Calderini,M. Carpinelli,Maria Agnese Ciocci,Vitaliano Ciulli,Roberto Dell'Orso,R. Fantechi,I. Ferrante,Lorenzo Foà,F. Forti,Alessandro Giassi,Mario Giorgi,A. Gregorio,Franco Ligabue,A. Lusiani,P. S. Marrocchesi,Alberto Messineo,G. Rizzo,G. Sanguinetti,Andrea Sciabà,Paolo Spagnolo,J. Steinberger,Roberto Tenchini,Guido Tonelli,C. Vannini,Piero Giorgio Verdini,J. J. Walsh,A. P. Betteridge,G.A. Blair,L. M. Bryant,Fabio Cerutti,J.T. Chambers,Yang Gao,M. G. Green,D. L. Johnson,T. Medcalf,P. Perrodo,J.A. Strong,J H. Von Wimmersperg-Toller,D. R. Botterill,R. W. Clifft,T. R. Edgecock,Stephen Haywood,P. Maley,P. R. Norton,J. C. Thompson,B. Bloch-Devaux,P. Colas,S. Emery,W. Kozanecki,Eric Lancon,M. C. Lemaire,Elizabeth Locci,B. Marx,Pablo Rodriguez Perez,John Rander,J. F. Renardy,A. Roussarie,J. P. Schuller,J. Schwindling,A. Trabelsi,B. Vallage,R. P. Johnson,H.Y. Kim,Alan Litke,M. A. McNeil,G. B. Taylor,A. Beddall,C. N. Booth,R. Boswell,Christopher Brew,S. L. Cartwright,F. Combley,A. Koksal,M. Letho,W. M. Newton,C. Rankin,J. Reeve,Lester D.R. Thompson,A. Böhrer,Stephanie Brandt,V. Büscher,G. A. Cowan,E. Feigl,C. Grupen,G. Lutters,J. Minguet-Rodriguez,F. Rivera,P. Saraiva,L. Smolik,F. Stephan,M. Aleppo,N. Apollonio,L. Bosisio,R. Della Marina,G. Giannini,B. Gobbo,G. Musolino,F. Ragusa,Joseph Rothberg,S. Wasserbaech,S.R. Armstrong,L. Bellantoni,Peter Elmer,Z. Y. Feng,D.P.S. Ferguson,Y. S. Gao,S. Gonzales,J. Grahl,T.C. Greening,J. L. Harton,O.J. Hayes,H. Hu,P. A. McNamara,Jane Nachtman,W. Orejudos,Y. B. Pan,Y. Saadi,Michael Schmitt,I.J. Scott,Vivek Sharma,Jd Turk,A. M. Walsh,Sau Lan Wu,Xin Wu,J.M. Yamartino,M. Zheng,Georg Zobernig +410 more
TL;DR: In this article, the polarization of Λ baryons from Z decays with the Aleph apparatus is studied with the first time, and the measured longitudinal Λ polarization is PLΛ = −0.32 ± 0.07 for z = p p beam > 0.3.
135
Performance of the ALEPH Time Projection Chamber
W. B. Atwood,T. Barczewski,L.A.T. Bauerdick,L. Bellantoni,E. Blucher,W. Blum,J. F. Boudreau,O. Boyle,D. Cinabro,J. S. Conway,G. A. Cowan,D. F. Cowen,Ilias Efthymiopoulos,P. Faure,Z. Y. Feng,F. Fidecaro,B. Gobbo,A. W. Halley,Stephen Haywood,A. Jahn,R. C. Jared,R. P. Johnson,Matthias Kasemann,Konrad Kleinknecht,B. W. LeClaire,I. Lehraus,B. Lofstedt,Thomas Lohse,D. Lueke,A. Lusiani,P. S. Marrocchesi,J. May,T. C. Meyer,Fabio Morsani,A. Minten,J. R. Pater,D. Pollmann,M. J. Price,Robert Richter,W. Richter,S. Roehn,L. Rolandi,A. Roth,H. Rotscheidt,D. Schlatter,M. Schmelling,H. Schmidt,J. Schroeder,R. Settles,F. Steeg,G. Stefanini,U. Stierlin,M. Takashima,W. Tejessy,I. ten Have,Juergen Thomas,A. Vayaki,J. A. Wear,Werner Wiedenmann,W. Witzeling,Sau Lan Wu +60 more
TL;DR: In this paper, the performance of the ALEPH Time Projection Chamber (TPC) has been studied using data taken during the LEP running periods in 1989 and 1990, which results in a momentum resolution for the TPC of Δp/p2 = 1.2 × 10−3 (GeV/c)−1.