Study of $\tau$ decays involving kaons, spectral functions and determination of the strange quark mass - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles European Physical Journal C: Particles and Fields Year : 1999

Study of $\tau$ decays involving kaons, spectral functions and determination of the strange quark mass

R. Barate (1) , D. Decamp (1) , P. Ghez (1) , C. Goy (1) , J.P. Lees (1) , E. Merle (1) , M.N. Minard (1) , B. Pietrzyk (1) , R. Alemany , M P. Casado , M. Chmeissani , J M. Crespo , E. Fernandez , L. Garrido , E. Graughs , A. Juste , M. Martmnez , G. Merino , R. Miquel , L M. Mir , A. Pacheco , I C. Park , I. Riu , 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 , Jiali Lin , Q. Ouyang , T. Wang , Y. Xie , R. Xu , S. Xue , J. Zhang , L. Zhang , W. Zhao , D. Abbaneo , U. Becker , G. Boix , M. Cattaneo , G. Dissertori , H. Drevermann , R W. Forty , M. Frank , a W. Halley , J B. Hansen , P. Janot , B. Jost , I. Lehraus , O. Leroy , P. Mato , A. Minten , A. Moutoussi , F. Ranjard , L. Rolandi , D. Rousseau , D. Schlatter , M. Schmitt , O. Schneider , W. Tejessy , F. Teubert , I R. Tomalin , E. Tournefier , Ziad Zj Ajaltouni (2) , F. Badaud (2) , G. Chazelle (2) , Alain Falvard (2) , C. Ferdi (2) , Pascal Gay (2) , C. Guicheney (2) , Pierre Henrard (2) , J. Jousset (2) , B. Michel (2) , S. Monteil (2) , Jean-Claude Montret (2) , D. Pallin (2) , Pascal Perret (2) , F. Podlyski (2) , J D. Hansen , J R. Hansen , P H. Hansen , B S. Nilsson , B. Rensch , A. Wäänänen , G. Daskalakis , A. Kyriakis , C. Markou , I. Siotis , A. Vayaki , A. Blondel (3) , G. Bonneaud (3) , J C. Brient (3) , A. Rougi (3) , M. Rumpf (3) , M. Swynghedauw (3) , M. Verderi (3) , H. Videau (3) , E. Focardi , G. Parrini , K. Zachariadou , R. Cavanaugh , M. Corden , C. Georgiopoulos , A. Antonelli , G. Bencivenni , G. Bologna , F. Bossi , P. Campana , G. Capon , F. Cerutti , V. Chiarella , P. Laurelli , G. Mannocchi , F. Murtas , G P. Murtas , L. Passalacqua , M. Pepi-Altarelli , L. Curtis , J G. Lynch , P. Negus , V. O'Shea , C. Raine , P. Teixeira-Dias , a S. Thompson , 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 , S. Goodsir , E B. Martin , N. Marinelli , J K. Sedgbeer , P. Spagnolo , E. Thomson , D. Williamsm , 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 , W L. Jonesr , N A. Robertson , M. Williams , I. Giehl , C. Hoffmann , K. Jakobs , K. Kleinknecht , G. Quast , B. Renk , E. Rohne , H G. Sander , P. van Gemmeren , H. Wachsmuth , C. Zeitniz , J.J. Aubert (4) , C. Benchouk (4) , A. Bonissent (4) , J. Carr (4) , P. Coyle (4) , F. Etienne (4) , A. Ealet (4) , F. Motsch (4) , P. Payre (4) , M. Talby (4) , M. Thulasidas (4) , M. Aleppo , M. Antonelli , F. Ragusa , R. Berlich , H. Dietl , G. Ganis , C. Mannert , W. Mdnner , Hg. Moser , S. Schael , R. Settles , H. Seywerd , H. Stenzel , W. Wiedenmann , G. Wolf , J. Boucrot (5) , O. Callot (5) , S. Chen (5) , A. Cordier (5) , M. Davier (5) , L. Duflot (5) , J F. Grivaz (5) , P. Heusse (5) , A. Hvcker (5) , A. Jacholkowska (5) , D W. Kim (5) , F. Le Diberder (5) , J. Lefrangois (5) , a M. Lutz (5) , M H. Schune (5) , J J. Veillet (5) , I. Videau (5) , D. Zerwas (5) , P. Azzurri , G. Bagliesi , S. Bettarini , T. Boccali , C. Bozzi , G. Calderini , R. Dell'Orso , R. Fantechi , I. Ferrante , A. Giassi , A. Gregorio , F. Ligabue , A. Lusiani , P S. Marrocchesi , A. Messineo , F. Palla , G. Rizzo , G. Sanguinetti , G. Sguazzoni , R. Tenchini , C. Vannini , A. Venturi , P G. Verdini , G A. Blair , J T. Chambers , G. Cowan , M G. Green , T. Medcalf , J A. Strong , J H. Vonwimmersperg-Toeller , D R. Botterill , R W. Clifft , T R. Edgecock , P R. Norton , J C. Thompson , a E. Wright , B. Bloch-Devaux , P. Colas , S. Emery , W. Kozanecki , M C. Lemaire , E. Locci , P. Pirez , 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 , S L. Cartwright , F. Combley , M S. Kelly , M H. Lehto , L F. Thompson , K. Affholderbach , A. Bvhrer , J. Foss , C. Grupen , G. Prange , L. Smolik , F. Stephan , G. Giannini , B. Gobbo , E. Rothbergj , S. Wasserbaech , S R. Armstrong , E. Charles , P. Elmer , D P S. Ferguson , Y. Gao , S. Gonzalez , T C. Greening , O J. Hayes , H. Hu , S. Jin , G. Mamier , P A. Mcnamara , J M. Nachtman , J. Nielsen , W. Orejudos , y B. Pan , Y. Saadi , I J. Scott , M. Vogt , J. Walsh
C. Goy
R. Alemany
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M P. Casado
  • Function : Author
M. Chmeissani
  • Function : Author
J M. Crespo
  • Function : Author
E. Fernandez
  • Function : Author
L. Garrido
  • Function : Author
E. Graughs
  • Function : Author
A. Juste
  • Function : Author
M. Martmnez
  • Function : Author
G. Merino
  • Function : Author
R. Miquel
  • Function : Author
L M. Mir
  • Function : Author
A. Pacheco
  • Function : Author
I C. Park
  • Function : Author
I. Riu
  • Function : Author
A. Colaleo
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D. Creanza
  • Function : Author
M. de Palma
  • Function : Author
G. Gelao
  • Function : Author
G. Iaselli
  • Function : Author
G. Maggi
  • Function : Author
M. Maggi
  • Function : Author
S. Nuzzo
  • Function : Author
A. Ranieri
  • Function : Author
G. Raso
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F. Ruggieri
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G. Selvaggi
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L. Silvestris
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P. Tempesta
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A. Tricomi
  • Function : Author
G. Zito
  • Function : Author
X. Huang
  • Function : Author
Jiali Lin
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Q. Ouyang
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T. Wang
  • Function : Author
Y. Xie
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R. Xu
S. Xue
  • Function : Author
J. Zhang
  • Function : Author
L. Zhang
W. Zhao
  • Function : Author
D. Abbaneo
  • Function : Author
U. Becker
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G. Boix
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M. Cattaneo
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G. Dissertori
  • Function : Author
H. Drevermann
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R W. Forty
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M. Frank
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a W. Halley
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J B. Hansen
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P. Janot
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B. Jost
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I. Lehraus
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O. Leroy
P. Mato
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A. Minten
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A. Moutoussi
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F. Ranjard
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L. Rolandi
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D. Rousseau
D. Schlatter
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M. Schmitt
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O. Schneider
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W. Tejessy
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F. Teubert
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I R. Tomalin
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E. Tournefier
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J D. Hansen
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J R. Hansen
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P H. Hansen
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B S. Nilsson
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B. Rensch
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A. Wäänänen
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G. Daskalakis
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A. Kyriakis
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C. Markou
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I. Siotis
  • Function : Author
A. Vayaki
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E. Focardi
  • Function : Author
G. Parrini
  • Function : Author
K. Zachariadou
  • Function : Author
R. Cavanaugh
  • Function : Author
M. Corden
  • Function : Author
C. Georgiopoulos
  • Function : Author
A. Antonelli
  • Function : Author
G. Bencivenni
  • Function : Author
G. Bologna
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F. Bossi
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P. Campana
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G. Capon
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F. Cerutti
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V. Chiarella
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P. Laurelli
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G. Mannocchi
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F. Murtas
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G P. Murtas
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L. Passalacqua
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M. Pepi-Altarelli
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L. Curtis
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J G. Lynch
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P. Negus
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V. O'Shea
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C. Raine
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P. Teixeira-Dias
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a S. Thompson
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S. Dhamotharan
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C. Geweniger
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P. Hanke
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G. Hansper
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V. Hepp
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E E. Kluge
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A. Putzer
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J. Sommer
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K. Tittel
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S. Werner
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M. Wunsch
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R. Beuselinck
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D M. Binnie
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W. Cameron
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P J. Dornan
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M. Girone
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S. Goodsir
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E B. Martin
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N. Marinelli
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J K. Sedgbeer
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P. Spagnolo
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E. Thomson
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D. Williamsm
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V M. Ghete
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P. Girtler
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E. Kneringer
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D. Kuhn
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G. Rudolph
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a P. Betteridge
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C K. Bowdery
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P G. Buck
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P. Colrain
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G. Crawford
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a J. Finch
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F. Foster
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G. Hughes
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W L. Jonesr
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N A. Robertson
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M. Williams
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I. Giehl
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C. Hoffmann
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K. Jakobs
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K. Kleinknecht
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G. Quast
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B. Renk
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E. Rohne
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H G. Sander
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P. van Gemmeren
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H. Wachsmuth
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C. Zeitniz
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M. Aleppo
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M. Antonelli
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F. Ragusa
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R. Berlich
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H. Dietl
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G. Ganis
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C. Mannert
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W. Mdnner
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Hg. Moser
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S. Schael
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R. Settles
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H. Seywerd
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H. Stenzel
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W. Wiedenmann
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G. Wolf
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P. Azzurri
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G. Bagliesi
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S. Bettarini
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T. Boccali
C. Bozzi
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G. Calderini
R. Dell'Orso
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R. Fantechi
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I. Ferrante
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A. Giassi
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A. Gregorio
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F. Ligabue
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A. Lusiani
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P S. Marrocchesi
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A. Messineo
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F. Palla
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G. Rizzo
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G. Sanguinetti
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G. Sguazzoni
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R. Tenchini
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C. Vannini
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A. Venturi
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P G. Verdini
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G A. Blair
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J T. Chambers
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G. Cowan
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M G. Green
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T. Medcalf
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J A. Strong
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J H. Vonwimmersperg-Toeller
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D R. Botterill
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R W. Clifft
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T R. Edgecock
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P R. Norton
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J C. Thompson
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a E. Wright
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B. Bloch-Devaux
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P. Colas
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S. Emery
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W. Kozanecki
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M C. Lemaire
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E. Locci
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P. Pirez
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J. Rander
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J F. Renardy
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A. Roussarie
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J P. Schuller
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J. Schwindling
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A. Trabelsi
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B. Vallage
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S N. Black
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J H. Dann
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R P. Johnson
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H Y. Kim
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N. Konstantinidis
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a M. Litke
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M A. Mcneil
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G. Taylor
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C N. Booth
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S L. Cartwright
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F. Combley
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M S. Kelly
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M H. Lehto
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L F. Thompson
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K. Affholderbach
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A. Bvhrer
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J. Foss
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C. Grupen
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G. Prange
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L. Smolik
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F. Stephan
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G. Giannini
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B. Gobbo
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E. Rothbergj
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S. Wasserbaech
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S R. Armstrong
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E. Charles
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P. Elmer
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D P S. Ferguson
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Y. Gao
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S. Gonzalez
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T C. Greening
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O J. Hayes
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H. Hu
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S. Jin
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G. Mamier
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P A. Mcnamara
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J M. Nachtman
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J. Nielsen
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W. Orejudos
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y B. Pan
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Y. Saadi
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I J. Scott
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M. Vogt
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J. Walsh
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Abstract

All ALEPH measurements of branching ratios of tau decays involving kaons are summarized including a combination of results obtained with K^0_S and K^0_L detection. The decay dynamics are studied, leading to the determination of contributions from vector K^*(892) and K^{*}(1410), and axial-vector K_1(1270) and K_1(1400) resonances. Agreement with isospin symmetry is observed among the different final states. Under the hypothesis of the conserved vector current, the spectral function for the K\bar{K}\pi mode is compared with the corresponding cross section for low energy e^+e^- annihilation, yielding an axial-vector fraction of (94^{+6}_{-8})% for this mode. The branching ratio for tau decay into all strange final states is determined to be B(\tau^-\to X^-(S=-1)\nu_\tau)=(28.7\pm1.2)\times 10^{-3}. The measured mass spectra of the strange tau decay modes are exploited to derive the S=-1 spectral function. A combination of strange and nonstrange spectral functions is used to determine the strange quark mass and nonperturbative contributions to the strange hadronic width. A method is developed to avoid the bad convergence of the spin zero hadronic component, with the result m_s(M_\tau^2)=(176^{\,+46}_{\, -57}) MeV/c^2. The evolution down to 1~GeV gives m_s(1~{\rm GeV}^2) = (234^{\,+61}_{\,-76})~{\rm MeV}/c^2.

Dates and versions

in2p3-00003571 , version 1 (04-04-2000)

Identifiers

Cite

R. Barate, D. Decamp, P. Ghez, C. Goy, J.P. Lees, et al.. Study of $\tau$ decays involving kaons, spectral functions and determination of the strange quark mass. European Physical Journal C: Particles and Fields, 1999, 11, pp.599-618. ⟨in2p3-00003571⟩
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