Open AccessProduction of excited beauty states inZ decays
Author(s) -
D. Buskulic,
D. W. Casper,
I. De Bonis,
D. Décamp,
P. Ghez,
C. Goy,
J. P. Lees,
A. Lucotte,
M.-N. Minard,
P. Odier,
B. Pietrzyk,
F. Ariztizabal,
M. Chmeissani,
J.M. Crespo,
I. Efthymiopoulos,
E. Fernández,
M. Bosman,
V. Gaitan,
Ll. Garrido,
M. Martı́nez,
S. Orteu,
A. Pacheco,
C. Padilla Aranda,
F. Palla,
Á. Pascual,
J.A. Perlas,
F. Sánchez,
F. Teubert,
A. Colaleo,
D. Creanza,
M. De Palma,
A. Farilla,
G. Gelao,
M. Girone,
G. Iaselli,
G. Maggi,
M. Maggi,
N. Marinelli,
S. Natali,
S. Nuzzo,
A. Ranieri,
G. Raso,
F. Romanò,
F. Ruggieri,
G. Selvaggi,
L. Silvestris,
P. Tempesta,
G. Zito,
X. T. Huang,
J. Lin,
Q. Ouyang,
T. Wang,
Y. Xie,
R. Xu,
She-Sheng Xue,
J. Zhang,
L. Zhang,
W. Zhao,
G. Bonvicini,
M. Cattaneo,
P. Comas,
P. Coyle,
H. Drevermann,
A. Engelhardt,
R.W. Forty,
M. Frank,
R. Hagelberg,
J. Harvey,
R. Jacobsen,
P. Janot,
B. Jost,
J. Knobloch,
I. Lehraus,
C. Markou,
E.B. Martin,
P. Mató,
H. Meinhard,
A. Minten,
R. Miquel,
T. Oest,
P. Palazzi,
J. R. Pater,
J.-F. Pusztaszeri,
F. Ranjard,
P. Rensing,
G. Rolandi,
D. Schlatter,
M. Schmelling,
O. Schneider,
W. Tejessy,
I. R. Tomalin,
A. Venturi,
H. Wachsmuth,
W. Wiedenmann,
T. Wildish,
W. Witzeling,
J. Wotschack,
Z. Ajaltouni,
M. Bardadin-Otwinowska,
A. Barrès,
C. Boyer,
A. Falvard,
P. Gay,
C. Guicheney,
P. Henrard,
J. Jousset,
B. Michel,
S. Monteil,
J-C. Montret,
D. Pallin,
P. Perret,
F. Podlyski,
J. Proriol,
J.-M. Rossignol,
F. Saadi,
T. Fearnley,
J. B. Hansen,
P. H. Hansen,
B.S. Nilsson,
A. Kyriakis,
E. Simopoulou,
I. Siotis,
A. Vayaki,
K. Zachariadou,
A. Blondel,
G. R. Bonneaud,
J.C. Brient,
Pierre Bourdon,
L. Passalacqua,
A. Rougé,
M. Rumpf,
R. Tanaka,
A. Valassi,
M. Verderi,
H. Videau,
D.J. Candlin,
M.I. Parsons,
E. Focardi,
G. Parrini,
M. Corden,
M. Delfino,
C. Georgiopoulos,
D. E. Jaffe,
A. Antonelli,
G. Bencivenni,
G. Bologna,
F. Bossi,
P. Campana,
G. Capon,
V. Chiarella,
G. Felici,
P. Laurelli,
G. Mannocchi,
F. Murtas,
G.P. Murtas,
M. Pepe-Altarelli,
S.J. Dorris,
A.W. Halley,
I. ten Have,
I.G. Knowles,
J.G. Lynch,
W.T. Morton,
V. O’Shea,
C. Raine,
P. Reeves,
J.M. Scarr,
K. Smith,
M.G. Smith,
A. S. Thompson,
F. Thomson,
S. Thorn,
R.M. Turnbull,
U. Becker,
O. Braun,
C. Geweniger,
G. Graefe,
P. Hanke,
V. Hepp,
E.-E. Kluge,
A. Putzer,
B. Rensch,
M. A. Schmidt,
J. Sommer,
H. Stenzel,
K. Tittel,
S. Werner,
M. Wunsch,
R. Beuselinck,
D.M. Binnie,
W. Cameron,
D. Colling,
P.J. Dornan,
N. Konstantinidis,
L. Moneta,
A. Moutoussi,
J. Nash,
G. San Martin,
J.K. Sedgbeer,
A.M. Stacey,
G. Dissertori,
P. Girtler,
E. Kneringer,
D. Kühn,
G. Rudolph,
C.K. Bowdery,
T.J. Brodbeck,
P. Colrain,
G. Crawford,
A.J. Finch,
F. Foster,
G. Hughes,
T. Sloan,
E.P. Whelan,
M.I. Williams,
A. Galla,
A.M. Greene,
K. Kleinknecht,
G. Quast,
J. Raab,
B. Renk,
H.G. Sander,
R. Wanke,
C. Zeitnitz,
J.J. Aubert,
A.M. Bencheikh,
C. Benchouk,
A. Bonissent,
G. Bujosa,
D. Calvet,
J. Carr,
C. Diaconu,
F. Etienne,
M. Thulasidas,
D. Nicod,
P. Payre,
D. Rousseau,
M. Talby,
I. Abt,
R. Aßmann,
C. Bauer,
W. Blum,
D. N. Brown,
H. Dietl,
F. Dydak,
G. Ganis,
C. Gotzhein,
K. Jakobs,
H. Kroha,
G. Lütjens,
G. Lutz,
W. Männer,
H. G. Moser,
R. Richter,
A. Rosado-Schlosser,
S. Schael,
R. Settles,
H. Seywerd,
U. Stierlin,
R. St. Denis,
R. Alemany,
J. Boucrot,
O. Callot,
A. Cordier,
F. Courault,
M. Davier,
L. Duflot,
J.-F. Grivaz,
Ph. Heusse,
M. Jacquet,
D. W. Kim,
F. Le Diberder,
J. Lefrançois,
A.-M. Lutz,
G. Musolino,
Ireikolic,
H. J. Park,
I. C. Park,
M. H. Schune,
S. Simion,
J.-J. Veillet,
I. Videau,
D. Abbaneo,
P. Azzurri,
G. Bagliesi,
G. Batignani,
S. Bettarini,
C. Bozzi,
G. Calderini,
M. Carpinelli,
M. A. Ciocci,
V. Ciulli,
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,
G. Rizzo,
G. Sanguinetti,
A. Sciabà,
P. Spagnolo,
J. Steinberger,
Р. Тенчини,
G. Tonelli,
G. Triggiani,
C. Vannini,
P. G. Verdini,
J. Walsh,
A.P. Betteridge,
G.A. Blair,
L.M. Bryant,
F. Cerutti,
Y. S. Gao,
M.G. Green,
D. Johnson,
T. Medcalf,
Ll.M. Mir,
P. Perrodo,
J.A. Strong,
V. Bertin,
D. Botterill,
R.W. Clifft,
T.R. Edgecock,
S. J. Haywood,
M. Edwards,
P. Maley,
P.R. Norton,
J.C. 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,
A. Trabelsi,
B. Vallage,
R. P. Johnson,
H. Y. Kim,
A. M. Litke,
M.A. McNeil,
G. Taylor,
A. J. Beddall,
C.N. Booth,
R. Boswell,
S. Cartwright,
F. Combley,
I. Dawson,
A. Koksal,
M. Letho,
W.M. Newton,
C. Rankin,
L.F. Thompson,
A. Böhrer,
S. Brandt,
G. Cowan,
Eric O. Feigl,
C. Grupen,
G. Lutters,
J. Minguet-Rodriguez,
F. Rivera,
Pedro Saraiva,
L. Smolík,
F. Stephan,
P. van Gemmeren,
M. Apollonio,
L. Bosisio,
R. Marina,
G. Giannini,
B. Gobbo,
F. Ragusa,
J. Rothberg,
S. Wasserbaech,
S.R. Armstrong,
L. Bellantoni,
P. Elmer,
Z. Feng,
D.P.S. Ferguson,
S. González de la Hoz,
J. Grahl,
J. L. Harton,
O.J. Hayes,
H. Hu,
P.A. McNamara,
J.M. Nachtman,
W. Orejudos,
Y.B. Pan,
Y. Saadi,
M. Schmitt,
I. Scott,
V. Sharma,
J. D. Turk,
A. M. Walsh,
S. L. Wu,
X. Wu,
J.M. Yamartino,
M. Zheng,
G. Zobernig
Publication year - 1995
Publication title -
zeitschrift für physik c
Language(s) - English
Resource type - Journals
eISSN - 1431-5858
pISSN - 0170-9739
DOI - 10.1007/bf02907419
Subject(s) - physics , meson , particle physics , hadron , rest frame , electron–positron annihilation , excited state , resonance (particle physics) , nuclear physics , production (economics) , quantum mechanics , redshift , galaxy , economics , macroeconomics
A data sample of about 3.0 million hadronic Z decays collected by the ALEPH experiment at LEP in the years 1991 through 1994 is used to make an inclusive selection of B hadron events. In this event sample 4227 +/- 140 +/- 252 B* mesons in the decay B* --> B gamma and 1944 +/- 108 +/- 161 B-u**,B-d** mesons decaying into a B meson and a charged pion are reconstructed. Here and in the following B-u**,B-d** denotes the eight L = 1 (b (u) over bar) and (b (d) over bar) states and their charge conjugate. For the well established B* meson the following quantities are obtained: Delta M = M(B)* - M(B) = (45.30 +/- 0.35 +/- 0.87) MeV/c(2) and N-B*/(N-B + N-B*) = (77.1 +/- 2.6 +/- 7.0)%. The angular distribution of the photons in the B* rest frame is used to measure the relative contribution of longitudinal B* polarization states to be sigma(L)/(sigma(L) + sigma(T)) = (33 +/- 6 +/- 5)%. In the M(B pi)- M(B) mass difference resonance structure is observed at (424 +/- 4 +/- 10) MeV/c(2), for which the shape and position is consistent with the expectation for B-u**,B-d** states decaying into B(*)pi(+/-). The relative production rate is determined to be BR(Z -> b -> B-u**,B-d**)/BR(Z --> b --> B-u,B-d) = [27.9 +/- 1.6(stat) +/- 5.9(syst) (+3.9)(-5.6)(model)]%. where the third error reflects the uncertainty due to different production and decay models for the broad B-u**,B-d** States
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