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Titolo:
MEASUREMENT OF THE SPIN-DENSITY MATRIX FOR THE RHO(0), K-ASTERISK(0)(892) AND PHI-PRODUCED IN Z(0) DECAYS
Autore:
ABREU P; ADAM W; ADYE T; ALEKSEEV GD; ALEMANY R; ALLPORT PP; ALMEHED S; AMALDI U; AMATO S; ANDERSSON P; ANDREAZZA A; ANTILOGUS P; APEL WD; ARNOUD Y; ASMAN B; AUGUSTIN JE; AUGUSTINUS A; BAILLON P; BAMBADE P; BARAO F; BARBI M; BARBIELLINI G; BARDIN DY; BARKER G; BARONCELLI A; BARRING O; BATES MJ; BATTAGLIA M; BAUBILLIER M; BAUDOT J; BECKS KH; BEGALLI M; BEILLIERE P; BELOKOPYTOV Y; BENVENUTI AC; BERAT C; BERGGREN M; BERTINI D; BERTRAND D; BESANCON M; BIANCHI F; BIGI M; BILENKY MS; BILLOIR P; BIZOUARD MA; BLOCH D; BLUME M; BONESINI M; BONIVENTO W; BOOTH PSL; BORGLAND AW; BORISOV G; BOSIO C; BOTNER O; BOUDINOV E; BOUQUET B; BOURDARIOS C; BOWCOCK TJV; BOZZO M; BRANCHINI P; BRAND KD; BRENKE T; BRENNER RA; BRICMAN C; BROWN RCA; BRUCKMAN P; BRUNET JM; BUGGE L; BURAN T; BURGSMUELLER T; BUSCHMANN P; CABRERA S; CACCIA M; CALVI M; ROZAS AJC; CAMPORESI T; CANALE V; CANEPA M; CAO F; CARENA F; CARROLL L; CASO C; GIMENEZ MVC; CATTAI A; CAVALLO FR; CHABAUD V; CHAPKIN M; CHARPENTIER P; CHAUSSARD L; CHECCHIA P; CHELKOV GA; CHEN M; CHIERICI R; CHLIAPNIKOV P; CHOCHULA P; CHOROWICZ V; CHUDOBA J; CINDRO V; COLLINS P; CONTRI R; CORTINA E; COSME G; COSSUTTI F; COWELL JH; CRAWLEY HB; CRENNELL D; CROSETTI G; MAESTRO JC; CZELLAR S; DAHM J; DALMAGNE B; DAM M; DAMGAARD G; DAUNCEY PD; DAVENPORT M; DASILVA W; DEGHORAIN A; DELLARICCA G; DELPIERRE P; DEMARIA N; DEANGELIS A; DEBOER W; DEBRABANDERE S; DECLERCQ C; DELAVAISSIERE C; DELOTTO B; DEMIN A; DEPAULA L; DIJKSTRA H; DICIACCIO L; DIDIODATO A; DJANNATI A; DOLBEAU J; DOROBA K; DRACOS M; DREES J; DREES KA; DRIS M; DURAND JD; EDSALL D; EHRET R; EIGEN G; EKELOF T; EKSPONG G; ELSING M; ENGEL JP; ERZEN B; SANTO ME; FALK E; FANOURAKIS G; FASSOULIOTIS D; FEINDT M; FENYUK A; FERRARI P; FERRER A; FICHET S; FILIPPAS TA; FIRESTONE A; FISCHER PA; FOETH H; FOKITIS E; FONTANELLI F; FORMENTI F; FRANEK B; FRODESEN AG; FRUHWIRTH R; FULDAQUENZER F; FUSTER J; GALLONI A; GAMBA D; GANDELMAN M; GARCIA C; GARCIA J; GASPAR C; GASPARINI U; GAVILLET P; GAZIS EN; GELE D; GERBER JP; 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OBRAZTSOV V; OLSHEVSKI AG; ONOFRE A; ORAVA R; ORAZI G; OSTERBERG K; OURAOU A; PAGANINI P; PAGANONI M; PAIN R; PALKA H; PAPADOPOULOU TD; PAPAGEORGIOU K; PAPE L; PARKES C; PARODI F; PARZEFALL U; PASSERI A; PEGORARO M; PERALTA L; PERNEGGER H; PERNICKA M; PERROTTA A; PETRIDOU C; PETROLINI A; PHILLIPS HT; PIANA G; PIERRE F; PIMENTA M; PODOBNIK T; PODOBRIN O; POL ME; POLOK G; POROPAT P; POZDNIAKOV V; PRIVITERA P; PUKHAEVA N; PULLIA A; RADOJICIC D; RAGAZZI S; RAHMANI H; RATOFF PN; READ AL; REALE M; REBECCHI P; REDAELLI NG; REGLER M; REID D; REINHARDT R; RENTON PB; RESVANIS LK; RICHARD F; RIDKY J; RINAUDO G; ROHNE O; ROMERO A; RONCHESE P; ROOS L; ROSENBERG EI; ROSINSKY P; ROUDEAU P; ROVELLI T; RUHLMANNKLEIDER V; RUIZ A; RYBICKI K; SAARIKKO H; SACQUIN Y; SADOVSKY A; SAJOT G; SALT J; SANNINO M; SCHNEIDER H; SCHWICKERATH U; SCHYNS MAE; SCIOLLA G; SCURI F; SEAGER P; SEDYKH Y; SEGAR AM; SEITZ A; SEKULIN R; SERBELLONI L; SHELLARD RC; SHERIDAN A; SIEGRIST P; SILVESTRE R; SIMONETTO F; SISAKIAN AN; SKAALI TB; SMADJA G; SMIRNOV N; SMIRNOVA O; SMITH GR; SOKOLOV A; SOLOVIANOV O; SOSNOWSKI R; SOUZASANTOS D; SPASSOV T; SPIRITI E; SPONHOLZ P; SQUARCIA S; STAMPFER D; STANESCU C; STANIC S; STAPNES S; STAVITSKI I; STEVENSON K; STOCCHI A; STRAUSS J; STRUB R; STUGU B; SZCZEKOWSKI M; SZEPTYCKA M; TABARELLI T; TAVERNET JP; TEGENFELDT F; TERRANOVA F; THOMAS J; TILQUIN A; TIMMERMANS J; TKATCHEV LG; TODOROV T; TODOROVA S; TOET DZ; TOMARADZE A; TONAZZO A; TORTORA L; TRANSTROMER G; TREILLE D; TRISTRAM G; TROMBINI A; TRONCON C; TSIROU A; TURLUER ML; TYAPKIN IA; TYNDEL M; TZAMARIAS S; UEBERSCHAER B; ULLALAND O; UVAROV V; VALENTI G; VALLAZZA E; VANAPELDOORN GW; VANDAM P;
Indirizzi:
IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON AMES IA 50011 UNIV INSTELLING ANTWERP,DEPT PHYS B-2610 WILRIJK BELGIUM FREE UNIV BRUSSELS,IIHE B-1050 BRUSSELS BELGIUM UNIV MONS,FAC SCI B-7000 MONS BELGIUM UNIV ATHENS,PHYS LAB GR-10680 ATHENS GREECE UNIV BERGEN,DEPT PHYS N-5007 BERGEN NORWAY UNIV BOLOGNA,DIPARTMENTO FIS I-40126 BOLOGNA ITALY IST NAZL FIS NUCL I-40126 BOLOGNA ITALY PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS BR-22290 RIO JANEIROBRAZIL COMENIUS UNIV BRATISLAVA,FAC MATH & PHYS SK-84215 BRATISLAVA SLOVAKIA UNIV ESTADUAL RIO DE JANEIRO,INST FIS RIO JANEIRO BRAZIL COLL FRANCE,PHYS CORPUSCULAIRE LAB,IN2P3,CNRS F-75231 PARIS 05 FRANCE CERN CH-1211 GENEVA 23 SWITZERLAND UNIV STRASBOURG 1,CNRS,IN2P3,INST RECH SUBATOM F-67037 STRASBOURG FRANCE NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS GR-15310 ATHENS GREECE ACAD SCI CZECH REPUBL,INST PHYS,FZU,DIV HIGH ENERGY PHYS CZ-18040 PRAGUE 8 CZECH REPUBLIC UNIV GENOA,DIPARTIMENTO FIS I-16146 GENOA ITALY IST NAZL FIS NUCL I-16146 GENOA ITALY UNIV GRENOBLE 1,IN2P3,CNRS,INST NUCL SCI F-38026 GRENOBLE FRANCE HELSINKI INST PHYS FIN-00014 HELSINKI FINLAND JOINT INST NUCL RES MOSCOW 101000 RUSSIA UNIV KARLSRUHE,INST EXPT KERNPHYS D-76128 KARLSRUHE GERMANY INST NUCL PHYS PL-30055 KRAKOW POLAND STANISLAW STASZIC UNIV MIN & MET PL-30055 KRAKOW POLAND UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,IN2P3,CNRS F-91405 ORSAY FRANCE UNIV LANCASTER,SCH PHYS & CHEM LANCASTER LA1 4YB ENGLAND FCUL,IST,LIP P-1000 LISBON PORTUGAL UNIV LIVERPOOL,DEPT PHYS LIVERPOOL L69 3BX MERSEYSIDE ENGLAND UNIV PARIS 06,IN2P3,CNRS,LPNHE F-75252 PARIS 05 FRANCE UNIV PARIS 07,IN2P3,CNRS,LPNHE F-75252 PARIS 05 FRANCE LUND UNIV,DEPT PHYS S-22363 LUND SWEDEN UNIV LYON 1,CNRS,IPNL,IN2P3 F-69622 VILLEURBANNE FRANCE UNIV AIX MARSEILLE 2,CPP,IN2P3,CNRS F-13288 MARSEILLE 09 FRANCE UNIV MILAN,DIPARTIMENTO FIS I-20133 MILAN ITALY IST NAZL FIS NUCL I-20133 MILAN ITALY NIELS BOHR INST DK-2100 COPENHAGEN O DENMARK CHARLES UNIV,NUCL CTR,MFF,NC CR-18000 PRAGUE 8 CZECH REPUBLIC NATL TECH UNIV ATHENS,DEPT PHYS GR-15773 ATHENS GREECE UNIV OSLO,DEPT PHYS N-1000 OSLO 3 NORWAY UNIV OVIEDO,DEPT FIS E-33007 OVIEDO SPAIN UNIV OXFORD,DEPT PHYS OXFORD OX1 3RH ENGLAND UNIV PADUA,DIPARTIMENTO FIS I-35131 PADUA ITALY IST NAZL FIS NUCL I-35131 PADUA ITALY RUTHERFORD APPLETON LAB DIDCOT OX11 0QX OXON ENGLAND UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS I-00173 ROME ITALY IST NAZL FIS NUCL I-00173 ROME ITALY CENS,CEA,DAPNIA,SERV PHYS PARTICULES F-91191 GIF SUR YVETTE FRANCE IST SUPER SANITA,IST NAZL FIS NUCL I-00161 ROME ITALY UC,CSIC,INST FIS CANTABRIA SANTANDER 39006 SPAIN INST HIGH ENERGY PHYS PROTVINO MOSCOW REGION RUSSIA JOZEF STEFAN INST SI-1000 LJUBLJANA SLOVENIA UNIV STOCKHOLM S-11385 STOCKHOLM SWEDEN UNIV TURIN,DIPARTIMENTO FIS SPERIMENTALE I-10125 TURIN ITALY IST NAZL FIS NUCL I-10125 TURIN ITALY UNIV TRIESTE,DIPARTMENTO FIS I-34127 TRIESTE ITALY IST NAZL FIS NUCL I-34127 TRIESTE ITALY UNIV UDINE,IST FIS I-33100 UDINE ITALY FED UNIV RIO DE JANEIRO BR-21945970 RIO JANEIRO BRAZIL UNIV UPPSALA,DEPT RADIAT SCI S-75121 UPPSALA SWEDEN UNIV VALENCIA,CSIC,IFIC E-46100 BURJASSOT VALENCIA SPAIN UNIV VALENCIA,DFAMN E-46100 BURJASSOT VALENCIA SPAIN AUSTRIAN ACAD SCI,INST HOCHENERGIEPHYS A-1050 VIENNA AUSTRIA INST NUCL STUDIES PL-00681 WARSAW POLAND UNIV WARSAW PL-00681 WARSAW POLAND BERG UNIV GESAMTHSCH WUPPERTAL,FACHBEREICH PHYS D-42097 WUPPERTAL GERMANY
Titolo Testata:
Physics letters. Section B
fascicolo: 3, volume: 406, anno: 1997,
pagine: 271 - 286
SICI:
0370-2693(1997)406:3<271:MOTSMF>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUARK FRAGMENTATION; D-STAR; ANNIHILATIONS; HADRONS; MESONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
P. Abreu et al., "MEASUREMENT OF THE SPIN-DENSITY MATRIX FOR THE RHO(0), K-ASTERISK(0)(892) AND PHI-PRODUCED IN Z(0) DECAYS", Physics letters. Section B, 406(3), 1997, pp. 271-286

Abstract

The spin density matrix elements for the rho(0), K-0(892) and phi produced in hadronic Z(0) decays are measured in the DELPHI detector. There is no evidence for spin alignment of the K-0(892) and phi, in theregion x(p) less than or equal to 0.3 (x(p) = p/p(beam)), where rho(00) = 0.33 +/- 0.05 and rho(00) = 0.30 +/- 0.04, respectively. In the fragmentation region, x(p) greater than or equal to 0.4, there is some indication for spin alignment of the rho(0) and K-0(892), since rho(00) = 0.43 +/- 0.05 and rho(00) = 0.46 +/- 0.08, respectively. These values are compared with those found in meson-induced hadronic reactions. For the phi, rho(00) = 0.30 +/- 0.04 for x(p) greater than or equal to 0.4 and 0.55 +/- 0.10 for x(p) greater than or equal to 0.7. The off-diagonal spin density matrix element rho(1-1) is consistent with zero in all cases. (C) 1997 Published by Elsevier Science B.V.

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Documento generato il 30/11/20 alle ore 12:48:10