Classification of the hadronic decays of the Z0 into b and c quark pairs using a neural network
P. Abreu,W. Adam,T. Adye,E. Agasi,G. D. Alekseev,A. Algeri,P. Allen,S. Almehed,S. J. Alvsvaag,U. Amaldi,E. Anassontzis,A. Andreazza,P. Antilogus,W. D. Apel,R. Apsimon,B. Åsman,J.-E. Augustin,A. Augustinus,P. Baillon,P. Bambade,F. Barão,R. Barate,G. Barbiellini,D. Y. Bardin,G. J. Barker,A. Baroncelli,O. Bärring,J. A. Barrio,W. Bartl,M. J. Bates,M. Battaglia,M. Baubillier,K. H. Becks,C. Beeston,M. Begalli,P. Beillière,Yu. Belokopytov,P. Beltran,D. Benedic,A. C. Benvenuti,M. Berggren,Daniel Bertrand,F. Bianchi,M.S. Bilenkii,P. Billoir,J. Bjarne,D. Blöch,S. Blyth,V. Bocci,P. N. Bogolubov,T. Bologneşe,M. Bonesini,W. Bonivento,P.S.L. Booth,P. Borgeaud,G. Borisov,H. Borner,C. Bosio,B. Boštjančič,S. Bosworth,O. Botner,B. Bouquet,C. Bourdarios,T. J. V. Bowcock,M. Bozzo,S. Braibant,P. Branchini,K. D. Brand,R. Brenner,H. Briand,C. Bricman,R.C.A. Brown,N. Brümmer,J. M. Brunet,L. Bugge,T. Buran,H. Burmeister,J. Buytaert,M. Caccia,M. Calvi,Aurelio Juste Rozas,T. Camporesi,V. Canale,F. Cao,F. Carena,L. Carroll,C. Caso,M. V. Castillo Gimenez,A. Cattai,F. R. Cavallo,L. Cerrito,V. Chabaud,A. Chan,Ph. Charpentier,L. Chaussard,J. Chauveau,P. Checchia,G. A. Chelkov,L. Chevalier,P. Chliapnikov,V. Chorowicz, J. Chrin,M. Ciuchini,M.P. Clara,P. Collins,J. L. Contreras,R. Contri,E. Cortina,G. Cosme,G. Cosmo,F. Couchot,H. B. Crawley,D. Crennell,G. Crosetti,M. Crozon,J. Cuevas,S. Czellár,E. Dahl‐Jensen,B. Dalmagne,M. Dam,G. Damgaard,G. Darbo,E. Daubie,A. Daum,P. D. Dauncey,M. Davenport,P. David,W. da Silva,C. Defoix,D. Delikaris,Stefan Delorme,P. Delpierre, Pietro Giudice,N. Demaria,A. De Angelis,M. De Beer,H. De Boeck,W. De Boer,C. De Clercq,M.D.M. De Fez Laso,N. De Groot,Ch De La Vaissière,B. De Lotto,A. De Min,H. Dijkstra,L. Di Ciaccio,F. Djama,J. Dolbeau,M. Dönszelmann,K. Doroba,M. Dracos,J. Drees,M. Dris,Y. Dufour,L. O. Eek,P. Eerola,R. Ehret,T. Ekelöf,G. Ekspong,A. Elliot Peisert,J. P. Engel,D. Fassouliotis,M. Feindt,M. Fernández Alonso,A. Ferrer,T. A. Filippas,A. Firestone,H. Foeth,E. Fokitis,F. Fontanelli,K.A.J. Forbes,J. L. Fousset,S. Francon,B. Franek,P. Frenkiel,D. C. Fries,A. G. Frodesen,R. Frühwirth,F. Fulda-Quenzer,K. Furnival,H. Fürstenau,J. Fuster,G. Galeazzi,D. Gamba,C. Garcı́a,J. M. Vizan Garcia,C. Gaspar,U. Gasparini,Ph. Gavillet,E. N. Gazis,J. Gerber,P. Giacomelli,R. Gokieli,B. Golob, V. Golovatyuk,y Cadenas J.J. Gomez,A. Goobar,G. P. Gopal,M. Górski,V. Gracco,A. Grant,F. Grard,E. Graziani,G. Grosdidier,E. Gross,B. Grossetête,P. Grosse‐Wiesmann,S. Gumenyuk,J. Guy,U. Haedinger,F. Hahn,M. Hahn,S. Haider,Z. Hajduk,A. Hakansson,A. Hallgren,K. Hamacher,G. Hamel de Monchenault,W. Hao,F. J. Harris,T. Henkes,J. J. Hernández,P. Herquet,H. Herr,T. L. Hessing,I. Hietanen,C. O. Higgins,E. Higón,H. J. Hilke,S. D. Hodgson,T. Hofmokl,R. Holmes,S. O. Holmgren,D. Holthuizen,P. F. Honoré,J. E. Hooper,M. Houlden,J. Hrubec,C. Huet,P. O. Hulth,K. Hultqvist,P. Ioannou,D. Isenhower,P. S. Iversen,J. N. Jackson,P. Jałocha,G. Jarlskog,P. Jarry,B. Jean‐Marie,Erik Johansson,D. Johnson,M. Jonker,L. Jönsson,P. Juillot,G. Kalkanis, Jussi Kalkkinen,G. Kalmus,F. Kapusta,M. Karlsson,E. Karvelas,S. Katsanevas, E. Katsoufis,R. Keränen,J. Kesteman,B. A. Khomenko,N. N. Khovanski,B. T. King,N. J. Kjaer,H. Klein,W. Klempt,A. Klovning,P. Kluit,A. Koch-Mehrin,J. H. Köhne,B. Koene,P. Kokkinias,M. Kopf,K. Korcyl,A. Korytov,V. Kostukhin,C. Kourkoumelis,O. Kouznetsov, P. Kramer,J. Królikowski,I. Kronkvist, U. Krüner-Marquis,W. Kucewicz,K. Kulka,K. Kurvinen,C. Lacasta,C. Lambropoulos,J. Lämsä,L. Lanceri,V. Lapin,J. P. Laugier,R. Lauhakangas,G. Leder,F. Ledroit,R. Leitner,Y. Lemoigne,J. Lemonne,G. Lenzen,V. Lepeltier,T. Lesiak,J. M. Lévy,E. Lieb,D. Liko,J. Lindgren,R. Lindner,A. Lipniacka,I. Lippi,B. Lörstad,M. Lokajı́ček,J. Loken,A. Lopez-Fernandez,M. A. Lopez Aguera,M. Los,D. Loukas,J. Lozano,P. Lutz,L. Lyons, G. Mahlum,J. Maillard,A. Maltezos,F. Mandl,J. Marco,M. Margoni,J. C. Marin,Α. Μάρκου,T. Maron,S. Martí,L. Mathis,F. Matorras,C. Matteuzzi,G. Matthiae,M. Mazzucato,M. McCubbin,R. McKay,R. McNulty,G. Meola,C. Meroni,W. T. Meyer,M. Michelotto,I. Mikulec,L. Mirabito,W. Mitaroff,G. Mitselmakher,U. Mjörnmark,T. Moa,R. Möller,K. Mönig,M. R. Monge,P. Morettini,H. Müller,W. J. Murray,G. Myatt,F. Naraghi,F. L. Navarria,P. Negri,B. S. Nielsen,B. Nijjhar,V. Nikolaenko,P.E.S. Nilsen,P. Niss,V. Obraztsov,A. G. Olshevski,R. Orava,A. Ostankov,K. Österberg,A. Ouraou,M. Paganoni,R. Pain,H. Pałka,Th. D. Papadopoulou,L. Pape,A. Passeri,M. Pegoraro,J. Pennanen,V. Perevozchikov,M. Pernicka,A. Perrotta,C. Petridou,A. Petrolini,L.P. Petrovykh,T.E. Pettersen,F. Pierre,M. Pimenta,O. Pingot,S. Plaszczynski,M. E. Pol,G. Polok,P. Poropat,P. Privitera,A. Pullia,D. Radojičić,S. Ragazzi,H. Rahmani,P. N. Ratoff,A. L. Read,N. Redaelli,M. Regler,D. Reid,P. Renton,L. K. Resvanis,F. Richard,M. Richardson,J. Řídký,G. Rinaudo,I. Roditi,A. Romero,I. Roncagliolo,P. Ronchese,C. Rönnqvist,E. I. Rosenberg,S. Rossi,U. Rossi,E. Rosso,P. Roudeau,T. Rovelli,W. Ruckstuhl,V. Ruhlmann-Kleider,A. Ruiz,H. Saarikko,Y. Sacquin,G. Sajot,J. Salt,J. Sánchez,M. Sannino,S. Schael,H. Schneider,Bruno Schulze,M. A E Schyns,G. Sciolla,F. Scuri,A. M. Segar,R. Sekulin,M. Sessa,G. Sette,R. Seufert,R. C. Shellard,I. Siccama,P. Siegrist,S. Simonetti,F. Simonetto,A. N. Sisakian,T. B. Skaali,G. Skjevling,G. Smadja,G. R. Smith,R. Sosnowski,T. S. Spassoff,E. Spiriti,S. Squarcia,H. Stack,C. Stănescu,S. Stapnes,G. Stavropoulos,F. Stichelbaut,A. Stocchi,J. Strauss,J. Straver,R. Strub,M. Szczekowski,M. Szeptycka,P. Szymański,T. Tabarelli,S. Tavernier, O. Chikilev,G. Theodosiou,A. Tilquin,J. Timmermans,V. G. Timofeev,L. G. Tkatchev,T. Todorov,D. Z. Toet,O. Toker,E. Torassa,L. Tortora,D. Treille,U. Trevisan,G. Tristram,C. Troncon,A. Tsirou,E. N. Tsyganov,M. L. Turluer,T. Tuuva,I. A. Tyapkin,M. Tyndel,S. Tzamarias,S. Uberschar,O. Ullaland,V. Uvarov,G. Valenti,E. Vallazza,J. A. Valls Ferrer,C. Vander Velde,G. W. van Apeldoorn,P. Van Dam,M. van der Heijden,W. K. Van Doninck,P. Vaz,G. Vegni,L. Ventura,W. Vénus,F. Verbeure,L. S. Vertogradov,D. Vilanova,P. Vincent,L. Vitale,E. Vlasov,A. Vodopyanov,M. Vollmer,G. Voulgaris,M. Voutilainen,V. Vrba,H. Wahlen,C. Walck,F. Waldner,M. Wayne,A. Wehr,M. Weierstall,P. Weilhammer,John S. Werner,A. M. Wetherell,J. Wickens,J. Wikne,G. Wilkinson,W. S. C. Williams,M. Winter,M. Witek,D. Wormald,G. Wormser,K. Woschnagg,N. Yamdagni,P. Yepes,A. Zaitsev,A. Zalewska,P. Zalewski,D. Zavrtanik,E. Zevgolatakos,G. Zhang
Physics Letters B（1992）
Cited 33|Views0
Abstract
A classifier based on a feed-forward neural network has been used for separating a sample of about 123 500 selected hadronic decays of the Z0, collected by DELPHI during 1991, into three classes according to the flavour of the original quark pair: uu+dd+ss (unresolved), cc and bb. The classification has been used to compute the partial widths of the Z0 into b and c quark pairs. This gave Γcc/Γh = 0.151 ± 0.008 (stat.) ± 0.041 (syst.), Γbb/Γh = 0.232±0.005 (stat.)±0.017 (syst.).
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Key words
hadronic decays,quark,z0,neural network,classification
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