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

M. Acciarri; P. Achard; O. Adriani; M. Aguilar-Benitez; J. Alcaraz; G. Alemanni; J. Allaby; A. Aloisio; M. G. Alviggi; G. Ambrosi; H. Anderhub; V. P. Andreev; T. Angelescu; F. Anselmo; A. Arefiev; T. Azemoon; T. Aziz; P. Bagnaia; L. Baksay; A. Balandras; R. C. Ball; S. Banerjee; Sw Banerjee; A. Barczyk; R. Barillère; L. Barone; P. Bartalini; M. Basile; R. Battiston; A. Bay; F. Becattini; U. Becker; F. Behner; L. Bellucci; J. Berdugo; P. Berges; B. Bertucci; B. L. Betev; S. Bhattacharya; M. Biasini; A. Biland; J. J. Blaising; S. C. Blyth; G. J. Bobbink; A. Böhm; L. Boldizsar; B. Borgia; D. Bourilkov; M. Bourquin; S. Braccini; J. G. Branson; V. Brigljevic; F. Brochu; A. Buffini; A. Buijs; J. D. Burger; W. J. Burger; A. Button; X. D. Cai; M. Campanelli; M. Capell; G. Cara Romeo; G. Carlino; A. M. Cartacci; J. Casaus; G. Castellini; F. Cavallari; N. Cavallo; C. Cecchi; M. Cerrada; F. Cesaroni; M. Chamizo; Y. H. Chang; U. K. Chaturvedi; M. Chemarin; A. Chen; G. Chen; G. M. Chen; H. F. Chen; H. S. Chen; G. Chiefari; L. Cifarelli; F. Cindolo; C. Civinini; I. Clare; R. Clare; G. Coignet; A. P. Colijn; N. Colino; S. Costantini; F. Cotorobai; B. Cozzoni; B. De La Cruz; A. Csilling; S. Cucciarelli; T. S. Dai; J. A. Van Dalen; R. D'Alessandro; R. De Asmundis

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

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

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, L. Baksay, A. BalandrasR. C. Ball, S. Banerjee, Sw Banerjee, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, S. Bhattacharya, M. Biasini, A. Biland, J. J. Blaising, S. C. Blyth, G. J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J. G. Branson, V. Brigljevic, F. Brochu, A. Buffini, A. Buijs, J. D. Burger, W. J. Burger, A. Button, X. D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A. M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y. H. Chang, U. K. Chaturvedi, M. Chemarin, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, A. P. Colijn, N. Colino, S. Costantini, F. Cotorobai, B. Cozzoni, B. De La Cruz, A. Csilling, S. Cucciarelli, T. S. Dai, J. A. Van Dalen, R. D'Alessandro, R. De Asmundis

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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]%. (C) 2000 Published by Elsevier Science B.V.

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 - 16 Mar 2000

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Acciarri, M., Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M. G., Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Baksay, L., ... De Asmundis, R. (2000). Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 476(3-4), 243-255. https://doi.org/10.1016/S0370-2693(00)00163-5

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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]%. (C) 2000 Published by Elsevier Science B.V.",

author = "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. Barill{\`e}re 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 S. Braccini and Branson, {J. G.} and V. Brigljevic and F. Brochu and A. Buffini and A. Buijs and Burger, {J. D.} and Burger, {W. J.} and A. Button and Cai, {X. D.} and M. Campanelli and M. Capell and {Cara Romeo}, G. and G. Carlino and Cartacci, {A. M.} and J. Casaus and G. Castellini and F. Cavallari and N. Cavallo and C. Cecchi and M. Cerrada and F. Cesaroni and M. Chamizo and Chang, {Y. H.} and Chaturvedi, {U. K.} and M. Chemarin and A. Chen and G. Chen and Chen, {G. M.} and Chen, {H. F.} and Chen, {H. S.} and G. Chiefari and L. Cifarelli and F. Cindolo and C. Civinini and I. Clare and R. Clare and G. Coignet and Colijn, {A. P.} and N. Colino and S. Costantini and F. Cotorobai and B. Cozzoni and {De La Cruz}, B. and A. Csilling and S. Cucciarelli and Dai, {T. S.} and {Van Dalen}, {J. A.} and R. D'Alessandro and {De Asmundis}, R.",

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volume = "476",

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Acciarri, M, Achard, P, Adriani, O, Aguilar-Benitez, M, Alcaraz, J, Alemanni, G, Allaby, J, Aloisio, A, Alviggi, MG, Ambrosi, G, Anderhub, H, Andreev, VP, Angelescu, T, Anselmo, F, Arefiev, A, Azemoon, T, Aziz, T, Bagnaia, P, Baksay, L, Balandras, A, Ball, RC, Banerjee, S, Banerjee, S, Barczyk, A, Barillère, R, Barone, L, Bartalini, P, Basile, M, Battiston, R, Bay, A, Becattini, F, Becker, U, Behner, F, Bellucci, L, Berdugo, J, Berges, P, Bertucci, B, Betev, BL, Bhattacharya, S, Biasini, M, Biland, A, Blaising, JJ, Blyth, SC, Bobbink, GJ, Böhm, A, Boldizsar, L, Borgia, B, Bourilkov, D, Bourquin, M, Braccini, S, Branson, JG, Brigljevic, V, Brochu, F, Buffini, A, Buijs, A, Burger, JD, Burger, WJ, Button, A, Cai, XD, Campanelli, M, Capell, M, Cara Romeo, G, Carlino, G, Cartacci, AM, Casaus, J, Castellini, G, Cavallari, F, Cavallo, N, Cecchi, C, Cerrada, M, Cesaroni, F, Chamizo, M, Chang, YH, Chaturvedi, UK, Chemarin, M, Chen, A, Chen, G, Chen, GM, Chen, HF, Chen, HS, Chiefari, G, Cifarelli, L, Cindolo, F, Civinini, C, Clare, I, Clare, R, Coignet, G, Colijn, AP, Colino, N, Costantini, S, Cotorobai, F, Cozzoni, B, De La Cruz, B, Csilling, A, Cucciarelli, S, Dai, TS, Van Dalen, JA, D'Alessandro, R & De Asmundis, R 2000, 'Measurement of the probability of gluon splitting into charmed quarks in hadronic Z decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 476, no. 3-4, pp. 243-255. https://doi.org/10.1016/S0370-2693(00)00163-5

TY - JOUR

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

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 - Barillère, 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 - Braccini, S.

AU - Branson, J. G.

AU - Brigljevic, V.

AU - Brochu, F.

AU - Buffini, A.

AU - Buijs, A.

AU - Burger, J. D.

AU - Burger, W. J.

AU - Button, A.

AU - Cai, X. D.

AU - Campanelli, M.

AU - Capell, M.

AU - Cara Romeo, G.

AU - Carlino, G.

AU - Cartacci, A. M.

AU - Casaus, J.

AU - Castellini, G.

AU - Cavallari, F.

AU - Cavallo, N.

AU - Cecchi, C.

AU - Cerrada, M.

AU - Cesaroni, F.

AU - Chamizo, M.

AU - Chang, Y. H.

AU - Chaturvedi, U. K.

AU - Chemarin, M.

AU - Chen, A.

AU - Chen, G.

AU - Chen, G. M.

AU - Chen, H. F.

AU - Chen, H. S.

AU - Chiefari, G.

AU - Cifarelli, L.

AU - Cindolo, F.

AU - Civinini, C.

AU - Clare, I.

AU - Clare, R.

AU - Coignet, G.

AU - Colijn, A. P.

AU - Colino, N.

AU - Costantini, S.

AU - Cotorobai, F.

AU - Cozzoni, B.

AU - De La Cruz, B.

AU - Csilling, A.

AU - Cucciarelli, S.

AU - Dai, T. S.

AU - Van Dalen, J. A.

AU - D'Alessandro, R.

AU - De Asmundis, R.

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]%. (C) 2000 Published by Elsevier Science B.V.

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]%. (C) 2000 Published by Elsevier Science B.V.

UR - http://www.scopus.com/inward/record.url?scp=0034673499&partnerID=8YFLogxK

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

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

M3 - 期刊論文

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

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