Inclusive neutral vector meson production in hadronicZ 0 decays

F K Loebinger,R Yaari,S Rossberg,G N Patrick,A Dieckmann,G A Bahan,M Kuwano,K W Bell,P W Jeffreys,R Kowalewski,J P Pansart,G Giacomelli,H M Bosch,S W Gensler,A Michelini,U Maur,M Yurko,G Duckeck,M Jobes,M Rosvick,M J Goodrick,J Ludwig,P S Wells,U Binder,J E Conboy,A A Carter,M H Lehto,J M Roney,P Poffenberger,H Ihssen,J R Carter,A J Martin,B Nellen,T Behnke,B Poli,J Banks,C J Oram,P Lennert,O Schaile,A Astbury,R Mir,R J Hemingway,T W Pritchard,D Menszner,H O Ogren,J E Pilcher,S Bougerolle,K Stephens,G Maringer,R E Hughes-Jones,F Odorici,P Weber,J Steuerer,F Lamarche,J C Clayton,M J Oreglia,W Gorn,D Karlen,A Beck,A K Honma,R P Middleton,T Hilse,B Boden,P Scharff-Hansen,C J Virtue,B Lorazo,I Cohen,C Markus,D Pitman,W R Gibson,M Hauschild,K J Anderson,P Kyberd,P D Acton,D A Hinshaw,F C Grant,O Ganel,I P Duerdoth,C K Hargrove,A M Rossi,M Morii,J Gascon,T Tsukamoto,T Kawamoto,D C Imrie,J E Duboscq,R J Homer,A Yeaman,D G Fong,V Gibson,M Settles,A Gaidot,A T Watson,F G Oakham,D Axen,G Tysarczyk-Niemeyer,B C Shen,R F Mcgowan,P A Elcombe,P Routenburg,S Weisz,M Foucher,J Mildenberger,N K Watson,D E Plane,M J Losty,J M Lorah,S Orito,R W Springer,F X Gentit,G D Lafferty,M Coupland,W Schappert,N Tesch,N Paz-Jaoshvili,T J Mcmahon,J C Hill,C Y Chang,C P Howarth,C M Hawkes,M Hansroul,P G Estabrooks,A Buijs,N I Geddes,G M Dallavalle,A Rollnik,R G Kellogg,C P Ward,A C Janissen,A Jawahery,M A Whalley,M S Dixit,G Yekutieli,P Bock,B Panzer-Steindel,D R Rust,R Shypit,J D Gillies,W Mohr,D L Rees,P Paschievici,A D Schaile,P Taras,A M Smith,K Runge,J Schwiening,J G Layter,M Manelli,C Moisan,E Heflin,N J Tresilian,P Berlich,P Pfister,M Tecchio,R M Brown,G P Siroli,B W Kennedy,P Leblanc,N J Thackray,M Jimack,C Wahl,J W Gary,J R Mcnutt,A Pouladdej,T Mouthuy,R K Carnegie,G T Zorn,W G Scott,G Vasseur,P M Watkins,R D Heuer,D R Ward,H Mes,M Sproston,R Humbert,M W Redmond,P M Hattersley,T P Kokott,F S Merritt,J Goldberg,I J Bloodworth,R J Barlow,J Hagemann,H Przysiezniak,R Keeler ,C Grandi ,E Do Couto E Silva ,G J Van Dalen ,J T Baines ,J Von Krogh ,S Dado ,S Marcellini ,H M Fischer ,T Włodek ,D Strom ,R Sobie ,K Kawagoe ,G Hanson ,T Mori ,J A Mckenna ,T Mäshimo ,S Arcelli ,J Kroll ,G Tranströmer ,M Turner ,M Weber ,G E Richards ,S Kluth ,E Etzion ,R Ströhmer ,H Von Der Schmitt ,S Levegrün ,P E.l Clarke ,A Skuja ,D Lellouch ,M Sasaki ,C Sbarra ,A Montanari ,E Ros ,S Barnett ,J P Walker ,M Dittmar ,P Singh ,D Van Den Plas ,Roger Jones ,P Jovanović ,P P Allport ,T J Smith ,P Teixeira-Dias ,P Capiluppi ,C Jui ,T R Wyatt ,P Sherwood ,G Alexander ,L A Del Pozo ,P F Harrison ,S J Hillier ,P Schenk ,P R Hobson ,J A Wilson ,S Tarem ,W J Collins ,S J De Jong ,V H Winterer ,L Köpke ,Hui Deng ,N Wermes ,D Robinson ,G Mikenberg ,A Simon ,A H Ball ,M Nozaki ,O Biebel ,J R Batley ,P Mättig ,J Hobbs ,R Van Kooten ,S Komamiya ,H Burckhart ,G Beaudoin ,D J.p Dumas ,D L Wagner ,M Cuffiani ,G A Snow ,G Quast ,X Lou ,E Duchovni ,H H Nguyen ,P Le Dû ,M Cooper ,E Prebys ,M Fincke-Keeler ,W D Zeuner ,Ch Geich-Gimbel ,J Král ,T Shears ,Ö Runólfsson ,F Fabbri ,G Azuelos ,J Becker ,Tatsuo Kobayashi ,C H Shepherd‐Themistocleous ,S Bethke ,C Leroy ,David Charlton ,L J Levinson ,H Breuker ,P Igo‐Kemenes ,J P Martín ,S A Wotton ,C Schwick ,S L Lloyd ,A Wagner ,G Bella ,H Jérémie ,D Hochmann ,S Schreiber ,A M Lee ,T Takeshita ,J Letts ,S W O’neale ,J C Hart ,H Evans ,J Allison ,G W Wilson ,F Meijers ,D J Miller

doi:10.1007/bf01474724

Abstract

Results are reported of a study of neutral vector meson production in multihadronicZ0 decays in the OPAL experiment at LEP. Pions and kaons have been identified by specific ionisation energy loss andK±π∓ andK+K− mass spectra have been fitted, in bins of the scaled momentum variablexp, to combinations of resonance signals and non-resonant backgrounds. Rates are given forK*(892)° and o(1020), and production cross sections are compared to the predictions of Monte Carlo models. Overall multiplicities have been determined as 0.76±0.07±0.06K*(892)° and 0.086±0.015±0.010 o(1020) per hadronicZ0 decay (the quoted errors are respectively statistical and systematic). Momentum dependent distortions of the ππ mass spectra, possibly associated indirectly with Bose-Einstein effects, have prevented reliable measurement of the ρ(770)° cross section in this study.

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