Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays

L3 Collaboration

doi:10.1016/S0370-2693(00)00163-5

Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays

L3 Collaboration

Physics

National Institute for Nuclear Physics
University of Geneva
University of Florence
CIEMAT
University of Lausanne
CERN
Swiss Federal Institute of Technology Zurich
Louisiana State University
Nuclear Physics Institute
University of Bucharest
University of Bologna
Alikhanov Institute for Theoretical and Experimental Physics
University of Michigan, Ann Arbor
Tata Institute of Fundamental Research
University of Rome La Sapienza
University of Alabama
IN2P3-CNRS
Paul Scherrer Institute
University of Perugia
Massachusetts Institute of Technology
Carnegie Mellon University
University of Amsterdam
RWTH Aachen University
Hungarian Academy of Sciences

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

22 Scopus citations

Abstract

We have measured the probability, n̄(g→cc̄), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods have been applied to events with a three-jet topology. One method relies on tagging charmed hadrons by identifying a lepton in the lowest energy jet. The other method uses a neural network based on global event shape parameters. Combining both methods, we measure n̄(g→cc̄) = [2.45 ± 0.29 ± 0.53]%.

Original language	English
Pages (from-to)	243-255
Number of pages	13
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	476
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(00)00163-5
State	Published - Mar 16 2000

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10.1016/S0370-2693(00)00163-5

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@article{c7149ec1e0384c41bc511b2b58be8469,

title = "Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays",

abstract = "We have measured the probability, {\=n}(g→c{\=c}), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods have been applied to events with a three-jet topology. One method relies on tagging charmed hadrons by identifying a lepton in the lowest energy jet. The other method uses a neural network based on global event shape parameters. Combining both methods, we measure {\=n}(g→c{\=c}) = [2.45 ± 0.29 ± 0.53]\%.",

author = "\{L3 Collaboration\} and M. Acciarri and P. Achard and O. Adriani and M. Aguilar-Benitez and J. Alcaraz and G. Alemanni and J. Allaby and A. Aloisio and Alviggi, \{M. G.\} and G. Ambrosi and H. Anderhub and Andreev, \{V. P.\} and T. Angelescu and F. Anselmo and A. Arefiev and T. Azemoon and T. Aziz and P. Bagnaia and L. Baksay and A. Balandras and Ball, \{R. C.\} and S. Banerjee and Sw Banerjee and A. Barczyk and R. Barillere and L. Barone and P. Bartalini and M. Basile and R. Battiston and A. Bay and F. Becattini and U. Becker and F. Behner and L. Bellucci and J. Berdugo and P. Berges and B. Bertucci and Betev, \{B. L.\} and S. Bhattacharya and M. Biasini and A. Biland and Blaising, \{J. J.\} and Blyth, \{S. C.\} and Bobbink, \{G. J.\} and A. B{\"o}hm and L. Boldizsar and B. Borgia and D. Bourilkov and M. Bourquin and I. Iashvili",

year = "2000",

month = mar,

day = "16",

doi = "10.1016/S0370-2693(00)00163-5",

language = "English",

volume = "476",

pages = "243--255",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "3-4",

}

TY - JOUR

T1 - Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays

AU - L3 Collaboration

AU - Acciarri, M.

AU - Achard, P.

AU - Adriani, O.

AU - Aguilar-Benitez, M.

AU - Alcaraz, J.

AU - Alemanni, G.

AU - Allaby, J.

AU - Aloisio, A.

AU - Alviggi, M. G.

AU - Ambrosi, G.

AU - Anderhub, H.

AU - Andreev, V. P.

AU - Angelescu, T.

AU - Anselmo, F.

AU - Arefiev, A.

AU - Azemoon, T.

AU - Aziz, T.

AU - Bagnaia, P.

AU - Baksay, L.

AU - Balandras, A.

AU - Ball, R. C.

AU - Banerjee, S.

AU - Banerjee, Sw

AU - Barczyk, A.

AU - Barillere, R.

AU - Barone, L.

AU - Bartalini, P.

AU - Basile, M.

AU - Battiston, R.

AU - Bay, A.

AU - Becattini, F.

AU - Becker, U.

AU - Behner, F.

AU - Bellucci, L.

AU - Berdugo, J.

AU - Berges, P.

AU - Bertucci, B.

AU - Betev, B. L.

AU - Bhattacharya, S.

AU - Biasini, M.

AU - Biland, A.

AU - Blaising, J. J.

AU - Blyth, S. C.

AU - Bobbink, G. J.

AU - Böhm, A.

AU - Boldizsar, L.

AU - Borgia, B.

AU - Bourilkov, D.

AU - Bourquin, M.

AU - Iashvili, I.

PY - 2000/3/16

Y1 - 2000/3/16

N2 - We have measured the probability, n̄(g→cc̄), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods have been applied to events with a three-jet topology. One method relies on tagging charmed hadrons by identifying a lepton in the lowest energy jet. The other method uses a neural network based on global event shape parameters. Combining both methods, we measure n̄(g→cc̄) = [2.45 ± 0.29 ± 0.53]%.

AB - We have measured the probability, n̄(g→cc̄), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods have been applied to events with a three-jet topology. One method relies on tagging charmed hadrons by identifying a lepton in the lowest energy jet. The other method uses a neural network based on global event shape parameters. Combining both methods, we measure n̄(g→cc̄) = [2.45 ± 0.29 ± 0.53]%.

UR - https://www.scopus.com/pages/publications/0034673499

U2 - 10.1016/S0370-2693(00)00163-5

DO - 10.1016/S0370-2693(00)00163-5

M3 - Article

AN - SCOPUS:0034673499

SN - 0370-2693

VL - 476

SP - 243

EP - 255

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 - 3-4

ER -

Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays

Abstract

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