Measurement of the branching fraction for D0 → K−π+

R. Barate,D. Buskulic,D. Decamp,P. Ghez,C. Goy,J. P. Lees,A. Lucotte,M.-N. Minard,J-Y Nief,B. Pietrzyk,M.P. Casado,M. Chmeissani,P Comas,J.M. Crespo,M Delfino,E. Fernandez,M. Fernandez-Bosman,L. Garrido,A. Juste,M. Martinez,R. Miquel,Ll.M. Mir,S. Orteu,C. Padilla,I. C. Park,A. Pascual,J.A. Perlas,Imma Riu,F. Sánchez,F. Teubert,A. Colaleo,D. Creanza,M. De Palma,G. Gelao,G. Iaselli,G. Maggi,M. Maggi,N. Marinelli,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,R. Alemany,U. Becker,A.O. Bazarko,P. Bright-Thomas,M. Cattaneo,F. Cerutti,H. Drevermann,R. Forty,M. Frank,R. Hagelberg,J. Harvey,P. Janot,B. Jost,E. Kneringer,J. Knobloch,I. Lehraus,G. Lutters,P. Mato,A. Minten,L. Moneta,A Pacheco,J. F. Pusztaszeri,F. Ranjard,P. Rensing,G. Rizzo,L. Rolandi,D. Schlatter,M. Schmitt,O. Schneider,W. Tejessy,I. R. Tomalin,H. Wachsmuth,Ap Wagner,Z. Ajaltouni,A. Barres,C. Boyer,A. Falvard,C. Ferdi,C. Guicheney,P. Henrard,J. Jousset,B. Michel,S. Monteil,J-C. Montret,D. Pallin,P. Perret,F. Podlyski,J. Proriol,P. 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,G. Daskalakis,A. Kyriakis,C. Markou,E. Simopoulou,I. Siotis,A. Vayaki,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,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,D. Casper,V. Chiarella,G. Felici,P. 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,V. OShea,C. Raine,J.M. Scarr,K. M. Smith,P. Teixeira-Dias,A. S. Thompson,E. Thomson,F. Thomson,R. M. Turnbull,C. Geweniger,G. Graefe,P. Hanke,G. Hansper,V. Hepp,E.-E. Kluge,A. Putzer,Marten Ole Schmidt,J. Sommer,K. Tittel,S. Werner,M. Wunsch,R. Beuselinck,D.M. Binnie,W. Cameron,P.J. Dornan,M. Girone,S. Goodsir,Ec Martin,A. Moutoussi,J. Nash,J.K. Sedgbeer,A.M. Stacey,M. D. Williams,G. Dissertori,P. Girtler,D. Kuhn,G. Rudolph,A.P. Betteridge,C.K. Bowdery,P. Colrain,G. Crawford,A.J. Finch,F. Foster,G. Hughes,T. Sloan,M.I. Williams,A. Galla,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,D. Calvet,J. Carr,P. Coyle,C. Diaconu,F. Etienne,N. Konstantinidis,O. Leroy,F. Motsch,P. Payre,David Rousseau,M. 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,H. Kroha,G. Lütjens,G. Lutz,W. Männer,H. G. Moser,R. Richter,A. Rosado-Schlosser,S. Schael,R. Settles,H. Seywerd,R. St. Denis,H. Stenzel,W Wiedenmann,G. Wolf,J. Boucrot,O. Callot,S. Chen,Y. Choi,A. Cordier,M. Davier,L. Duflot,Jean-Francois Grivaz,P. Heusse,A. Hocker,A. Jacholkowska,M. Jacquet,D.W. Kim,F. Le Diberder,J. Lefrançois,Am Lutz,I. Nikolic,M.-H. Schune,S. Simion,E. Tournefier,J. J. Veillet,I. Videau,D. Zerwas,P. Azzurri,G. Bagliesi,G. Batignani,S. Bettarini,C. Bozzi,G. Calderini,M. Carpinelli,M. A. Ciocci,V. Ciulli,Roberto DellOrso,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. Sanguinetti,A. Sciaba,P. Spagnolo,J. Steinberger,R. Tenchini,G. Tonelli,C. Vannini,A. Venturi,P. G. Verdini,G.A. Blair,L.M. Bryant,J.T. Chambers,Y. S. Gao,M.G. Green,T Medcalf,P. Perrodo,J. A. Strong,J. H. von Wimmersperg-Toeller,D. Botterill,R.W. Clifft,T.R. Edgecock,S. J. Haywood,P. Maley,P. R. Norton,Jm 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,A. M. Litke,M.A. McNeil,G. N. Taylor,C.N. Booth,R. Boswell,C. Brew,S. Cartwright,F. Combley,M.S. Kelly,M. Lehto,W.M. Newton,J. Reeve,L.F. Thompson,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. Ferguson,Y.S. Gao,S. Gonzalez,T.C. Greening,O.J. Hayes,H. Hu,S. Jin,P.A. McNamara,J. Nachtman,J. Nielsen,W. Orejudos,Y. Pan,Y. Saadi,I. Scott,J. Walsh,Sau Lan Wu,X. Wu,J.M. Yamartino,G. Zobernig

Measurement of the branching fraction for D0 → K−π+

1997

R. Barate
D. Buskulic
D. Decamp
P. Ghez
C. Goy
J. P. Lees
A. Lucotte
M.-N. Minard
J-Y Nief
B. Pietrzyk
M.P. Casado
M. Chmeissani
P Comas
J.M. Crespo
M Delfino
E. Fernandez
M. Fernandez-Bosman
L. Garrido
A. Juste
M. Martinez
R. Miquel
Ll.M. Mir
S. Orteu
C. Padilla
I. C. Park
A. Pascual
J.A. Perlas
Imma Riu
F. Sánchez
F. Teubert
A. Colaleo
D. Creanza
M. De Palma
G. Gelao
G. Iaselli
G. Maggi
M. Maggi
N. Marinelli
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
R. Alemany
U. Becker
A.O. Bazarko
P. Bright-Thomas
M. Cattaneo
F. Cerutti
H. Drevermann
R. Forty
M. Frank
R. Hagelberg
J. Harvey
P. Janot
B. Jost
E. Kneringer
J. Knobloch
I. Lehraus
G. Lutters
P. Mato
A. Minten
L. Moneta
A Pacheco
J. F. Pusztaszeri
F. Ranjard
P. Rensing
G. Rizzo
L. Rolandi
D. Schlatter
M. Schmitt
O. Schneider
W. Tejessy
I. R. Tomalin
H. Wachsmuth
Ap Wagner
Z. Ajaltouni
A. Barres
C. Boyer
A. Falvard
C. Ferdi
C. Guicheney
P. Henrard
J. Jousset
B. Michel
S. Monteil
J-C. Montret
D. Pallin
P. Perret
F. Podlyski
J. Proriol
P. 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
G. Daskalakis
A. Kyriakis
C. Markou
E. Simopoulou
I. Siotis
A. Vayaki
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
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
D. Casper
V. Chiarella
G. Felici
P. 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
V. OShea
C. Raine
J.M. Scarr
K. M. Smith
P. Teixeira-Dias
A. S. Thompson
E. Thomson
F. Thomson
R. M. Turnbull
C. Geweniger
G. Graefe
P. Hanke
G. Hansper
V. Hepp
E.-E. Kluge
A. Putzer
Marten Ole Schmidt
J. Sommer
K. Tittel
S. Werner
M. Wunsch
R. Beuselinck
D.M. Binnie
W. Cameron
P.J. Dornan
M. Girone
S. Goodsir
Ec Martin
A. Moutoussi
J. Nash
J.K. Sedgbeer
A.M. Stacey
M. D. Williams
G. Dissertori
P. Girtler
D. Kuhn
G. Rudolph
A.P. Betteridge
C.K. Bowdery
P. Colrain
G. Crawford
A.J. Finch
F. Foster
G. Hughes
T. Sloan
M.I. Williams
A. Galla
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
D. Calvet
J. Carr
P. Coyle
C. Diaconu
F. Etienne
N. Konstantinidis
O. Leroy
F. Motsch
P. Payre
David Rousseau
M. 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
H. Kroha
G. Lütjens
G. Lutz
W. Männer
H. G. Moser
R. Richter
A. Rosado-Schlosser
S. Schael
R. Settles
H. Seywerd
R. St. Denis
H. Stenzel
W Wiedenmann
G. Wolf
J. Boucrot
O. Callot
S. Chen
Y. Choi
A. Cordier
M. Davier
L. Duflot
Jean-Francois Grivaz
P. Heusse
A. Hocker
A. Jacholkowska
M. Jacquet
D.W. Kim
F. Le Diberder
J. Lefrançois
Am Lutz
I. Nikolic
M.-H. Schune
S. Simion
E. Tournefier
J. J. Veillet
I. Videau
D. Zerwas
P. Azzurri
G. Bagliesi
G. Batignani
S. Bettarini
C. Bozzi
G. Calderini
M. Carpinelli
M. A. Ciocci
V. Ciulli
Roberto DellOrso
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. Sanguinetti
A. Sciaba
P. Spagnolo
J. Steinberger
R. Tenchini
G. Tonelli
C. Vannini
A. Venturi
P. G. Verdini
G.A. Blair
L.M. Bryant
J.T. Chambers
Y. S. Gao
M.G. Green
T Medcalf
P. Perrodo
J. A. Strong
J. H. von Wimmersperg-Toeller
D. Botterill
R.W. Clifft
T.R. Edgecock
S. J. Haywood
P. Maley
P. R. Norton
Jm 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
A. M. Litke
M.A. McNeil
G. N. Taylor
C.N. Booth
R. Boswell
C. Brew
S. Cartwright
F. Combley
M.S. Kelly
M. Lehto
W.M. Newton
J. Reeve
L.F. Thompson
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. Ferguson
Y.S. Gao
S. Gonzalez
T.C. Greening
O.J. Hayes
H. Hu
S. Jin
P.A. McNamara
J. Nachtman
J. Nielsen
W. Orejudos
Y. Pan
Y. Saadi
I. Scott
J. Walsh
Sau Lan Wu
X. Wu
J.M. Yamartino
G. Zobernig

Abstract The branching fraction for D 0 → K − π + is measured with the statistics collected by ALEPH from 1991 to 1994. The method is based on the comparison between the rate for the reconstructed D ∗+ → D 0 π + , D 0 → K − π + decay chain and the rate for inclusive soft pion production at low transverse momentum with respect to the nearest jet. The result is B (D 0 → K − π + 0 = (3.90 ± 0.09 ± 0.12)%

Keywords:

Quantum electrodynamics
Decay chain
Particle physics
Nuclear physics
Electron–positron annihilation
Pion
Branching fraction
Momentum
Physics
transverse momentum
Aleph
ALEPH experiment

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