First measurement of the BS meson mass

D. Buskulic,I. De Bonis,D. Decamp,P. Ghez,C. Goy,J. P. Lees,M.-N. Minard,B. Pietrzyk,F. Ariztizabal,P Comas,J.M. Crespo,M Delfino,I. Efthymiopoulos,E. Fernandez,M. Fernandez-Bosman,V. Gaitan,L. Garrido,T. S. Mattison,A. Pacheco,C. Padilla,A. Pascual,D. Creanza,M. De Palma,A. Farilla,G. Iaselli,G. Maggi,S. Natali,S. Nuzzo,M. Quattromini,A. Ranieri,G. Raso,F. Romano,F. Ruggieri,G. Selvaggi,L. Silvestris,P. Tempesta,G. Zito,Y. Chai,H. Hu,D. Huang,X. Huang,J. Lin,T. Wang,Y. Xie,D. Xu,R. Xu,J. Zhang,L. Zhang,W. Zhao,E. Blucher,G. Bonvicini,J. Boudreau,D. Casper,H. Drevermann,R. Forty,G. Ganis,R. Hagelberg,J. Harvey,Stephen Haywood,J. Hilgart,Rg Jacobsen,B. Jost,J. Knobloch,I. Lehraus,T. Lohse,M. Maggi,C. Markou,M. Martinez,P. Mato,H. Meinhard,A. Minten,A. Miotto,R. Miquel,H.-G. Moser,P. Palazzi,J. R. Pater,J.A. Perlas,J. F. Pusztaszeri,F. Ranjard,G. Redlinger,L. Rolandi,J. Rothberg,T. Ruan,M. Saich,D. Schlatter,M. Schmelling,F. Sefkow,W. Tejessy,R. Veenhof,H. Wachsmuth,W Wiedenmann,T. Wildish,W. Witzeling,J. Wotschack,Z. Ajaltouni,F. Badaud,M. Bardadin-Otwinowska,R. El-Fellous,A. Falvard,C. Guicheney,P. Henrard,J. Jousset,B. Michel,J-C. Montret,D. Pallin,Pascal Perret,F. Podlyski,J. Proriol,F. Prulhiere,F. Saadi,T. Fearnley,J. D. Hansen,J. R. Hansen,P.H. Hansen,R. Mollerud,B.S. Nilsson,A. Kyriakis,E. Simopoulou,A. Vayaki,K. Zachariadou,J. Badier,A. Blondel,G. R. Bonneaud,J C Brient,G. Fouque,S. Orteu,A. Rougé,M. Rumpf,R. Tanaka,M. Verderi,H. Videau,D.J. Candlin,M.I. Parsons,E. Veitch,E. Focardi,L. Moneta,G. Parrini,M. Corden,C. Georgiopoulos,M. Ikeda,J. Lannutti,D. Levinthal,L. Sawyer,S. Wasserbaech,A Antonelli,R. Baldini,G. Bencivenni,G. Bologna,F. Bossi,P. Campana,G. Capon,F. Cerutti,V. Chiarella,B. DEttorre-Piazzoli,G. Felici,P. Laurelli,G. Mannocchi,F. Murtas,G.P. Murtas,L. Passalacqua,M. Pepe-Altarelli,P. Picchi,P. Colrain,I. ten Have,J G Lynch,W. Maitland,W. T. Morton,C. Raine,P. Reeves,J.M. Scarr,Kenway Smith,M. G. Smith,A. S. Thompson,R. M. Turnbull,Bernhard R. Brandl,O. Braun,C. Geweniger,P. Hanke,V. Hepp,E.-E. Kluge,Y. Maumary,A. Putzer,B. Rensch,A. Stahl,K. Tittel,M. Wunsch,R. Beuselinck,D.M. Binnie,W. Cameron,M. Cattaneo,D. Colling,P.J. Dornan,A.M. Greene,J. F. Hassard,N.M. Lieske,A. Moutoussi,Jordan Nash,S. Patton,D.G. Payne,M.J. Phillips,G. San Martin,J.K. Sedgbeer,Ian R. Tomalin,A.G. Wright,P. Girtler,E. Kneringer,D. Kuhn,G. Rudolph,C.K. Bowdery,T. J. Brodbeck,A.J. Finch,F. Foster,G. Hughes,D. Jackson,N. R. Keemer,M. Nuttall,A. Patel,T. Sloan,S. W. Snow,E.P. Whelan,K. Kleinknecht,J. Raab,B. Renk,H. G. Sander,H. Schmidt,F. Steeg,S.M. Walther,R. Wanke,B. Wolf,A.M. Bencheikh,C. Benchouk,A. Bonissent,J. Carr,P. Coyle,J. Drinkard,F. Etienne,D. Nicod,S. Papalexiou,P. Payre,L. Roos,David Rousseau,Philippe Schwemling,M. Talby,S. Adlung,R. Assmann,C. Bauer,W. Blum,D. Brown,P. Cattaneo,B. Dehning,H. Dietl,F. Dydak,Michael M. Frank,A.W. Halley,K. Jacobs,J. Lauber,G. Lütjens,G. Lutz,W. Männer,R. Richter,J. Schröder,A. S. Schwarz,R. Settles,H. Seywerd,U. Stierlin,U. Stiegler,R. St. Denis,G. Wolf,R. Alemany,J. Boucrot,O. Callot,A. Cordier,M. Davier,L. Duflot,Jean-Francois Grivaz,P. Heusse,D.E. Jaffe,P. Janot,D.W. Kim,F. Le Diberder,J. Lefrançois,Am Lutz,M.-H. Schune,J. J. Veillet,I. Videau,Z. Zhang,D. Abbaneo,G. Bagliesi,G. Batignani,U. Bottigli,C. Bozzi,G. Calderini,M. Carpinelli,M. A. Ciocci,Roberto DellOrso,I. Ferrante,F. Fidecaro,L. Foà,F. Forti,A. Giassi,M. A. Giorgi,A. Gregorio,F. Ligabue,A. Lusiani,E.B. Mannelli,P.S. Marrocchesi,A. Messineo,F. Palla,G. Rizzo,G. Sanguinetti,P. Spagnolo,J. Steinberger,Roberto Tenchini,G. Tonelli,G. Triggiani,C. Vannini,A. Venturi,P. G. Verdini,J. Walsh,A.P. Betteridge,J.M. Carter,Y. S. Gao,M.G. Green,P.V. March,Ll.M. Mir,T Medcalf,I.S. Quazi,J. A. Strong,L.R. West,D. Botterill,R.W. Clifft,T.R. Edgecock,P. R. Norton,Jm Thompson,B. Bloch-Devaux,P. Colas,H. Duarte,S. Emery,W. Kozanecki,E. Lançon,M.C. Lemaire,E. Locci,B. Marx,P. Perez,J. Rander,J.-F. Renardy,A. Rosowsky,A. Roussarie,J.-P. Schuller,J. Schwindling,D. Si Mohand,B. Vallage,R.P. Johnson,A. M. Litke,G. N. Taylor,J. Wear,J.G. Ashman,W. Babbage,C.N. Booth,Craig Buttar,S. Cartwright,F. Combley,I. Dawson,L.F. Thompson,E. Barberio,A. Böhrer,S. Brandt,G. Cowan,C. Grupen,G. Lutters,F. Rivera,U. Schäfer,L. Smolik,L. Bosisio,R. Della Marina,G. Giannini,B. Gobbo,F. Ragusa,L. Bellantoni,W. Chen,D. Cinabro,J. Conway,Z. Feng,D. Ferguson,Y.S. Gao,J. Grahl,John L. Harton,B.W. LeClaire,C. Lishka,Y. Pan,Y. Saadi,M. Schmitt,V. Sharma,Z.H. Shi,A.M. Walsh,F.V. Weber,Sau Lan Wu,X. Wu,M. Zheng,G. Zobernig

First measurement of the BS meson mass

1993

D. Buskulic
I. De Bonis
D. Decamp
P. Ghez
C. Goy
J. P. Lees
M.-N. Minard
B. Pietrzyk
F. Ariztizabal
P Comas
J.M. Crespo
M Delfino
I. Efthymiopoulos
E. Fernandez
M. Fernandez-Bosman
V. Gaitan
L. Garrido
T. S. Mattison
A. Pacheco
C. Padilla
A. Pascual
D. Creanza
M. De Palma
A. Farilla
G. Iaselli
G. Maggi
S. Natali
S. Nuzzo
M. Quattromini
A. Ranieri
G. Raso
F. Romano
F. Ruggieri
G. Selvaggi
L. Silvestris
P. Tempesta
G. Zito
Y. Chai
H. Hu
D. Huang
X. Huang
J. Lin
T. Wang
Y. Xie
D. Xu
R. Xu
J. Zhang
L. Zhang
W. Zhao
E. Blucher
G. Bonvicini
J. Boudreau
D. Casper
H. Drevermann
R. Forty
G. Ganis
R. Hagelberg
J. Harvey
Stephen Haywood
J. Hilgart
Rg Jacobsen
B. Jost
J. Knobloch
I. Lehraus
T. Lohse
M. Maggi
C. Markou
M. Martinez
P. Mato
H. Meinhard
A. Minten
A. Miotto
R. Miquel
H.-G. Moser
P. Palazzi
J. R. Pater
J.A. Perlas
J. F. Pusztaszeri
F. Ranjard
G. Redlinger
L. Rolandi
J. Rothberg
T. Ruan
M. Saich
D. Schlatter
M. Schmelling
F. Sefkow
W. Tejessy
R. Veenhof
H. Wachsmuth
W Wiedenmann
T. Wildish
W. Witzeling
J. Wotschack
Z. Ajaltouni
F. Badaud
M. Bardadin-Otwinowska
R. El-Fellous
A. Falvard
C. Guicheney
P. Henrard
J. Jousset
B. Michel
J-C. Montret
D. Pallin
Pascal Perret
F. Podlyski
J. Proriol
F. Prulhiere
F. Saadi
T. Fearnley
J. D. Hansen
J. R. Hansen
P.H. Hansen
R. Mollerud
B.S. Nilsson
A. Kyriakis
E. Simopoulou
A. Vayaki
K. Zachariadou
J. Badier
A. Blondel
G. R. Bonneaud
J C Brient
G. Fouque
S. Orteu
A. Rougé
M. Rumpf
R. Tanaka
M. Verderi
H. Videau
D.J. Candlin
M.I. Parsons
E. Veitch
E. Focardi
L. Moneta
G. Parrini
M. Corden
C. Georgiopoulos
M. Ikeda
J. Lannutti
D. Levinthal
L. Sawyer
S. Wasserbaech
A Antonelli
R. Baldini
G. Bencivenni
G. Bologna
F. Bossi
P. Campana
G. Capon
F. Cerutti
V. Chiarella
B. DEttorre-Piazzoli
G. Felici
P. Laurelli
G. Mannocchi
F. Murtas
G.P. Murtas
L. Passalacqua
M. Pepe-Altarelli
P. Picchi
P. Colrain
I. ten Have
J G Lynch
W. Maitland
W. T. Morton
C. Raine
P. Reeves
J.M. Scarr
Kenway Smith
M. G. Smith
A. S. Thompson
R. M. Turnbull
Bernhard R. Brandl
O. Braun
C. Geweniger
P. Hanke
V. Hepp
E.-E. Kluge
Y. Maumary
A. Putzer
B. Rensch
A. Stahl
K. Tittel
M. Wunsch
R. Beuselinck
D.M. Binnie
W. Cameron
M. Cattaneo
D. Colling
P.J. Dornan
A.M. Greene
J. F. Hassard
N.M. Lieske
A. Moutoussi
Jordan Nash
S. Patton
D.G. Payne
M.J. Phillips
G. San Martin
J.K. Sedgbeer
Ian R. Tomalin
A.G. Wright
P. Girtler
E. Kneringer
D. Kuhn
G. Rudolph
C.K. Bowdery
T. J. Brodbeck
A.J. Finch
F. Foster
G. Hughes
D. Jackson
N. R. Keemer
M. Nuttall
A. Patel
T. Sloan
S. W. Snow
E.P. Whelan
K. Kleinknecht
J. Raab
B. Renk
H. G. Sander
H. Schmidt
F. Steeg
S.M. Walther
R. Wanke
B. Wolf
A.M. Bencheikh
C. Benchouk
A. Bonissent
J. Carr
P. Coyle
J. Drinkard
F. Etienne
D. Nicod
S. Papalexiou
P. Payre
L. Roos
David Rousseau
Philippe Schwemling
M. Talby
S. Adlung
R. Assmann
C. Bauer
W. Blum
D. Brown
P. Cattaneo
B. Dehning
H. Dietl
F. Dydak
Michael M. Frank
A.W. Halley
K. Jacobs
J. Lauber
G. Lütjens
G. Lutz
W. Männer
R. Richter
J. Schröder
A. S. Schwarz
R. Settles
H. Seywerd
U. Stierlin
U. Stiegler
R. St. Denis
G. Wolf
R. Alemany
J. Boucrot
O. Callot
A. Cordier
M. Davier
L. Duflot
Jean-Francois Grivaz
P. Heusse
D.E. Jaffe
P. Janot
D.W. Kim
F. Le Diberder
J. Lefrançois
Am Lutz
M.-H. Schune
J. J. Veillet
I. Videau
Z. Zhang
D. Abbaneo
G. Bagliesi
G. Batignani
U. Bottigli
C. Bozzi
G. Calderini
M. Carpinelli
M. A. Ciocci
Roberto DellOrso
I. Ferrante
F. Fidecaro
L. Foà
F. Forti
A. Giassi
M. A. Giorgi
A. Gregorio
F. Ligabue
A. Lusiani
E.B. Mannelli
P.S. Marrocchesi
A. Messineo
F. Palla
G. Rizzo
G. Sanguinetti
P. Spagnolo
J. Steinberger
Roberto Tenchini
G. Tonelli
G. Triggiani
C. Vannini
A. Venturi
P. G. Verdini
J. Walsh
A.P. Betteridge
J.M. Carter
Y. S. Gao
M.G. Green
P.V. March
Ll.M. Mir
T Medcalf
I.S. Quazi
J. A. Strong
L.R. West
D. Botterill
R.W. Clifft
T.R. Edgecock
P. R. Norton
Jm Thompson
B. Bloch-Devaux
P. Colas
H. Duarte
S. Emery
W. Kozanecki
E. Lançon
M.C. Lemaire
E. Locci
B. Marx
P. Perez
J. Rander
J.-F. Renardy
A. Rosowsky
A. Roussarie
J.-P. Schuller
J. Schwindling
D. Si Mohand
B. Vallage
R.P. Johnson
A. M. Litke
G. N. Taylor
J. Wear
J.G. Ashman
W. Babbage
C.N. Booth
Craig Buttar
S. Cartwright
F. Combley
I. Dawson
L.F. Thompson
E. Barberio
A. Böhrer
S. Brandt
G. Cowan
C. Grupen
G. Lutters
F. Rivera
U. Schäfer
L. Smolik
L. Bosisio
R. Della Marina
G. Giannini
B. Gobbo
F. Ragusa
L. Bellantoni
W. Chen
D. Cinabro
J. Conway
Z. Feng
D. Ferguson
Y.S. Gao
J. Grahl
John L. Harton
B.W. LeClaire
C. Lishka
Y. Pan
Y. Saadi
M. Schmitt
V. Sharma
Z.H. Shi
A.M. Walsh
F.V. Weber
Sau Lan Wu
X. Wu
M. Zheng
G. Zobernig

In a sample of about 1.1 million hadronic Z decays recorded with the ALEPH detector during the 1990–1992 running of LEP, two unambiguous BS meson candidates were observed. From these events the mass of the BS meson has been measured to be 5.3686 ± 0.0056 (stat.) ± 0.0015 (syst.) GeV.

Keywords:

Quantum electrodynamics
Particle physics
Hadron
Nuclear physics
ALEPH experiment
Detector
Electron–positron annihilation
Physics
Meson
Elementary particle
Aleph

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