Charm counting in b decays

ALEPH Collaboration

doi:10.1016/S0370-2693(96)01318-4

Charm counting in b decays

ALEPH Collaboration

Université Paris-Sud
University of São Paulo
European Organization for Nuclear Research
University of Barcelona
INFN Sezione di Bari
INFN Sezione di Catania
Institute of High Energy Physics, Chinese Academy of Sciences
Wayne State University
c/o DESY
Dragon Systems, Inc
Max-Planck-Institut für Kernphysik
Université Blaise Pascal
Niels Bohr Institutet
NCSR Demokritos
University of Edinburgh
University of Florence
Florida State University
LNF-INFN
University of Turin
Ev-K2-CNR Committee
University of Glasgow
University of Heidelberg
Imperial College London
University of Innsbruck
Lancaster University
Johannes Gutenberg University
University of Milano
Max-Planck-Institut für Physik
Laboratoire de l'Accélérateur Linéaire
Sungkyunkwan University
Gangneung-Wonju National University
University of Pisa
Dipartimento di Scienze Biomediche
King's College London
Rutherford Appleton Laboratory
Institut Pierre Simon Laplace, CNRS and CEA
University of California at Santa Cruz
The University of Sheffield
Universität Siegen
University of Trieste
University of Washington
University of Wisconsin-Madison
Johns Hopkins University
Harvard University
Rutgers University–New Brunswick

Research output: Contribution to journal › Article › peer-review

Abstract

The inclusive production of charmed particles in Z → bb̄ decays has been measured from the yield of D⁰, D⁺, D⁺ _s and A⁺ _c decays in a sample of qq̄ events with high b purity collected with the ALEPH detector from 1992 to 1995. From these measurements, adding the charmonia production rate and an estimate of the charmed strange baryon contribution, the average number of charm quarks per b decay is determined to be n_c = 1.230 ± 0.036 ± 0.038 ± 0.053, where the uncertainties are due to statistics, systematic effects and branching ratios, respectively.

Original language	English
Pages (from-to)	648-658
Number of pages	11
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	388
Issue number	3
DOIs	https://doi.org/10.1016/S0370-2693(96)01318-4
Publication status	Published - 21 Nov 1996

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10.1016/S0370-2693(96)01318-4

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@article{6bc3b3607640414586ea624d178475fe,

title = "Charm counting in b decays",

abstract = "The inclusive production of charmed particles in Z → b{\=b} decays has been measured from the yield of D0, D+, D+ s and A+ c decays in a sample of q{\=q} events with high b purity collected with the ALEPH detector from 1992 to 1995. From these measurements, adding the charmonia production rate and an estimate of the charmed strange baryon contribution, the average number of charm quarks per b decay is determined to be nc = 1.230 ± 0.036 ± 0.038 ± 0.053, where the uncertainties are due to statistics, systematic effects and branching ratios, respectively.",

author = "\{ALEPH Collaboration\} and D. Buskulic and \{De Bonis\}, I. and D. Decamp and P. Ghez and C. Goy and Lees, \{J. P.\} and A. Lucotte and Minard, \{M. N.\} and Nief, \{J. Y.\} and P. Odier and B. Pietrzyk and Casado, \{M. P.\} and M. Chmeissani and Crespo, \{J. M.\} and M. Delfino and I. Efthymiopoulos and E. Fernandez and M. Fernandez-Bosman and Ll Garrido and A. Juste and M. Martinez and S. Orteu and C. Padilla and Park, \{I. C.\} and A. Pascual and Perlas, \{J. A.\} and I. Riu and F. Sanchez and F. Teubert and A. Colaleo and D. Creanza and \{de Palma\}, M. and G. Gelao and M. Girone and G. Iaselli and G. Maggi and M. Maggi and N. Marinelli and S. Nuzzo and A. Ranieri and G. Raso and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and A. Tricomi and G. Zito and X. Huang and J. Lin and M. Verderi",

year = "1996",

month = nov,

day = "21",

doi = "10.1016/S0370-2693(96)01318-4",

language = "English",

volume = "388",

pages = "648--658",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

number = "3",

}

TY - JOUR

T1 - Charm counting in b decays

AU - ALEPH Collaboration

AU - Buskulic, D.

AU - De Bonis, I.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Lucotte, A.

AU - Minard, M. N.

AU - Nief, J. Y.

AU - Odier, P.

AU - Pietrzyk, B.

AU - Casado, M. P.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Efthymiopoulos, I.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Garrido, Ll

AU - Juste, A.

AU - Martinez, M.

AU - Orteu, S.

AU - Padilla, C.

AU - Park, I. C.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Riu, I.

AU - Sanchez, F.

AU - Teubert, F.

AU - Colaleo, A.

AU - Creanza, D.

AU - de Palma, M.

AU - Gelao, G.

AU - Girone, M.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Marinelli, N.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Tricomi, A.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Verderi, M.

PY - 1996/11/21

Y1 - 1996/11/21

N2 - The inclusive production of charmed particles in Z → bb̄ decays has been measured from the yield of D0, D+, D+ s and A+ c decays in a sample of qq̄ events with high b purity collected with the ALEPH detector from 1992 to 1995. From these measurements, adding the charmonia production rate and an estimate of the charmed strange baryon contribution, the average number of charm quarks per b decay is determined to be nc = 1.230 ± 0.036 ± 0.038 ± 0.053, where the uncertainties are due to statistics, systematic effects and branching ratios, respectively.

AB - The inclusive production of charmed particles in Z → bb̄ decays has been measured from the yield of D0, D+, D+ s and A+ c decays in a sample of qq̄ events with high b purity collected with the ALEPH detector from 1992 to 1995. From these measurements, adding the charmonia production rate and an estimate of the charmed strange baryon contribution, the average number of charm quarks per b decay is determined to be nc = 1.230 ± 0.036 ± 0.038 ± 0.053, where the uncertainties are due to statistics, systematic effects and branching ratios, respectively.

UR - https://www.scopus.com/pages/publications/0008626521

U2 - 10.1016/S0370-2693(96)01318-4

DO - 10.1016/S0370-2693(96)01318-4

M3 - Article

AN - SCOPUS:0008626521

SN - 0370-2693

VL - 388

SP - 648

EP - 658

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3

ER -

Charm counting in b decays

Abstract

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