Rapidity correlations in Λ baryon and proton production in hadronic Z0 decays

P Abreu ,B T King ,A Baroncelli ,L Ventura ,J Hrubec ,I Roncagliolo ,E Zevgolatakos ,R Frühwirth ,M Tyndel ,J Marco ,T B Skaali ,G Sajot ,F Naraghi ,W Oberschulte-Beckmann ,S Gumenyuk ,R Silvestre ,M Dracos ,M Koratzinos ,A M Wetherell ,G Orazi ,K Karafasoulis ,G Matthiae ,P Juillot ,P Gunnarsson ,J Dahm ,C De Clercq ,I Ajinenko ,V Hedberg ,W Kucewicz ,Kathy Huet ,U Mjoernmark ,Ph Gavillet ,F Tegenfeldt ,P Ferrari ,E Vlasov ,F Verbeure ,B Franek ,D Y Bardin ,K Korcyl ,L Lanceri ,A De Min ,H J Hilke ,B Loerstad ,B Tomé ,K Muenich ,M S Bilenky ,S Czellár ,V Nikolaenko ,M Regler ,P Privitera ,K Doroba ,L Jönsson ,P Dauncey ,Rui Henriques ,Z Krumstein ,M Pegoraro ,L Mundim ,L K Resvanis ,G Wilkinson ,P Morettini ,S Amato ,L Mirabito ,H T Phillips ,F Zach ,F Formenti ,O Kouznetsov ,R Sosnowski ,U Gasparini ,V Chorowicz ,M Bozzo ,M Dris ,D Reid ,S Cabrera ,M Nikolenko ,A Seitz ,S Hoorelbeke ,K Kurvinen ,J M Vizan Garcia ,L De Paula ,E Boudinov ,D Loukas ,R Orava ,G Tranströmer ,M Esṕırito Santo ,S Meyer ,M Elsing ,T Moa ,K Hamacher ,K Cankoçak ,Ph Charpentier ,A N Sisakian ,G Myatt ,L Vitale ,C Caso ,M Winter ,I Lippi ,L Tortora ,N Redaelli ,L Peralta ,P Chochula ,V Cindro ,F Simonetto ,A G Frodesen ,G Crosetti ,A Tomaradze ,M Canepa ,S Almehed ,O Botner ,O Smirnova ,G Eigen ,R Keränen ,K Yip ,S Stapnes ,F L Navarria ,M Mulders ,Daniel Bertrand ,M Houlden ,K Nawrocki ,M L Turluer ,Erik Johansson ,J Van Eldik ,C Petridou ,D Fassouliotis ,V Malychev ,R C Shellard ,B Jean‐Marie ,P Jałocha ,P Zalewski ,V Lepeltier ,M Caccia ,C Bricman ,M Margoni ,A Zalewska ,R Marco ,F J Harris ,R Jacobsson ,G Tristram ,P Chliapnikov ,S Marti-Garcia ,J Salt ,J Cuevas ,W Bonivento ,M Nieuwenhuizen ,O Klapp ,C Mariotti ,C Green ,A Di Diodato ,K Belous ,F Bianchi ,A Cattai ,J Řídký ,A Perrotta ,D Stampfer ,W Mitaroff ,B S Nielsen ,I B Laktineh ,F Fulda-Quenzer ,P Vincent ,W Da Silva ,T Camporesi ,R Gokieli ,C Kourkoumelis ,M Berggren ,W T Meyer ,V Lapin ,C Bosio ,N Pukhaeva ,G Chelkov ,R Alemany ,P.s.l Booth ,D Liko ,R Ehret ,T Brenke ,M L Andrieux ,G P Gopal ,M A Bizouard ,P Niss ,A Pullia ,A Stocchi ,T L Hessing ,J Wickens ,F Waldner ,A Ruiz ,B Ueberschaer ,M Begalli ,H Schneider ,M Pimenta ,V Gracco ,A C Benvenuti ,L S Vertogradov ,M Mc Cubbin ,J Lämsä ,D Knoblauch ,A Grefrath ,M Wielers ,P Delpierre ,D Z Toet ,J Richardson ,J C Marin ,H Pernegger ,T Buran ,T Tabarelli ,E Katsoufis ,J Medbo ,A Passeri ,N Vassilopoulos ,D Souza-Santos ,F Pierre ,J M Lopez ,C Garćıa ,K Rybicki ,A Tsirou ,C Weiser ,T Rovelli ,C K Legan ,L Roos ,J Mašík ,P Weilhammer ,L Chaussard ,D W Lane ,P Jarry ,H Dijkstra ,F Parodi ,P Ronchese ,G Vegni ,J E Augustin ,C Troncon ,A Zaitsev ,P Rebecchi ,M R Monge ,D Zavrtanik ,A Nomerotski ,K Hultqvist ,G Lenzen ,G Della Ricca ,P Brückman ,O Podobrin ,M Dam ,S Stanič ,R Pain ,E Spiriti ,J I Yi ,V Lefébure ,R.c.a Brown ,P Negri ,F Martínez-Vidal ,P Herquet ,E Vallazza ,R Lauhakangas ,P Jönsson ,P Seager ,C Kreuter ,B Åsman ,A Ferrer ,J P Tavernet ,A Augustinus ,F R Cavallo ,R Janik ,K Stevenson ,A Galloni ,R Sekulin ,P Renton ,A M Segar ,M Battaglia ,S Němeček ,E Migliore ,W Krupinski ,G Cosme ,A Ouraou ,G Borisov ,A L Read ,F Richard ,F Hahn ,O Sahr ,Ph Gris ,P Checchia ,T Adye ,J Drees ,G C Zucchelli ,J Libby ,L Pape ,A Leisos ,D Holthuizen ,I Kronkvist ,R Chierici ,C Parkes ,B De Lotto ,V Canale ,K Mönig ,N I Zimin ,R Moeller ,M Gandelman ,A Petrolini ,J Macnaughton ,A Tilquin ,T Ekelöf ,U Amaldi ,P Gonçalves ,C Stănescu ,M Szczekowski ,K Papageorgiou ,S De Brabandere ,G Sciolla ,J D Durand ,A Sadovsky ,W Ruckstuhl ,P J Holt ,A Vodopyanov ,M Merk ,M Michelotto ,J Heuser ,F Cossutti ,N Neumeister ,M Verlato ,R Reinhardt ,U Schwickerath ,L Gorn ,P Buschmann ,G Valenti ,A Trombini ,J Gerber ,Yu Belokopytov ,J Baudot ,N J Kjaer ,C Gaspar ,M Paganoni ,B Golob ,V Obraztsov ,M J Bates ,D Bertini ,Yu.a Khokhlov ,M Karlsson ,J Lemonne ,V Uvarov ,B Erzen ,P Antilogus ,E Graziani ,J Fuster ,S Navas ,M Pernicka ,V Kostioukhine ,W Neumann ,M Günther ,L Di Ciaccio ,W S C Williams ,P Beillière ,I Božović ,V Ruhlmann-Kleider ,K A Drees ,Th D Papadopoulou ,A Tonazzo ,R Lindner ,T Podobnik ,P Billoir ,G Piana ,M Reale ,H Foeth ,F Terranova ,E I Rosenberg ,N Smirnov ,K H Becks ,J Loken ,P Paganini ,P Lutz ,J Dolbeau ,J N Jackson ,G R Smith ,T Todorov ,R Nicolaidou ,T J V Bowcock ,E N Gazis ,B Koene ,P P Allport ,L Gerdyukov ,V Chabaud ,A Onofre ,A Firestone ,F Kapusta ,H Wahlen ,V Vrba ,D Radojičić ,P Kluit ,D Žontar ,C Joram ,T Włodek ,F Mandl ,A Djannati ,H Rahmani ,Α Μάρκου ,C Lacasta ,P Poropat ,E Fokitis ,P Kokkinias ,R Mc Kay ,M V Castillo Gimenez ,P Fischer ,M Blume ,L Carroll ,K Grzelak ,S R Hahn ,D Vilanova ,I A Tyapkin ,M Górski ,C Matteuzzi ,A De Angelis ,P Siegrist ,S Katsanevas ,H Mueller ,B Bouquet ,P Kubinec ,J Strauss ,P Sponholz ,L G Tkatchev ,P Roudeau ,B Dalmagne ,G Rinaudo ,T Burgsmueller ,C Jarlskog ,M Mazzucato ,P Pagès ,Z Hajduk ,M Kaiser ,J Chudoba ,M Feindt ,T G M Malmgren ,P Bambade ,B Maréchal ,J P Thomas ,G Grosdidier ,H Saarikko ,G W Van Apeldoorn ,P Branchini ,M Baubillier ,O Bärring ,G Jarlskog ,J M Brunet ,Aurelio Juste Rozas ,A Deghorain ,C Meroni ,M Bigi ,G Mæhlum ,F Matorras ,D Edsall ,N Demaria ,B Stugu ,W J Murray ,A Normand ,H Herr ,O Ullaland ,H Pałka ,R Strub ,M Bonesini ,A G Olshevski ,R Contri ,F Carena ,M Calvi ,E Higón ,O Yushchenko ,P Langefeld ,G Polok ,S Squarcia ,N N Khovanski ,W D Apel ,M A E Schyns ,E Tcherniaev ,Y Sacquin ,P N Ratoff ,F Ledroit ,Šárka Todorova ,C Martínez-Rivero ,V Pozdniakov ,J Timmermans ,P Baillon ,D Treille ,A Andreazza ,Y Sedykh ,S O Holmgren ,J J Hernández ,M E Pol ,J H Cowell ,D Gelé ,M Chen ,W Vénus ,G Ekspong ,Yu Gouz ,F Fontanelli ,M Krammer ,R Brenner ,W De Boer ,F Cao ,M Szeptycka ,H Klein ,C Walck ,D Gamba ,B Muryn ,L Lyons ,J Guy ,Ch De La Vaissière ,D Blöch ,R Leitner ,D Crennell ,M Besançon ,L Bugge ,S Tzamarias ,J P Engel ,A Lipniacka ,T Lesiak ,B Sitár ,S Fichet ,A Maio ,F Scuri ,R Mc Nulty ,A Romero ,E Cortina ,C Bourdarios ,J R Mahon ,A Miagkov ,G Smadja ,G Damgaard ,K Österberg ,T A Filippas ,A W Borgland ,M Davenport ,A Van Lysebetten ,B A Khomenko ,F Barão ,M Barbi ,G D Alekseev ,P Collins ,G J Barker ,E Falk ,A Hallgren ,L Serbelloni ,G Fanourakis ,M Witek ,K D Brand ,D Wicke ,H B Crawley ,S Ragazzi ,M Sannino ,J P Laugier ,P Van Dam ,W Adam ,I Stavitski ,G Zumerle

doi:10.1016/s0370-2693(97)01380-4

Abstract

In an analysis of multihadronic events recorded at LEP by DELPHI in the years 1992 through 1994, charged hadrons are identified using the measurement of their energy loss and their Cherenkov angle. Rapidity correlations of \La-\La, proton-proton, and \La-proton pairs are compared. The agreement with the string and cluster fragmentation models is tested. For those pairs that frame a meson in terms of rapidity the compensation of strangeness is studied. For \La{}$\overline{\mathrm{p}}$ pairs the additional correlation with respect to charged kaons is analysed.

Full Text