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Titolo:
PHOTOPRODUCTION OF J PSI MESONS AT HERA
Autore:
AHMED T; AID S; ANDREEV V; ANDRIEU B; APPUHN RD; ARPAGAUS M; BABAEV A; BAEHR J; BAN J; BARANOV P; BARRELET E; BARTEL W; BARTH M; BASSLER U; BECK HP; BEHREND HJ; BELOUSOV A; BERGER C; BERGSTEIN H; BERNARDI G; BERNET R; BERTRANDCOREMANS G; BESANCON M; BEYER R; BIDDULPH P; BIZOT JC; BLOBEL V; BORRAS K; BOTTERWECK F; BOUDRY V; BRAEMER A; BRASSE F; BRAUNSCHWEIG W; BRISSON V; BRUNCKO D; BRUNE C; BUCHHOLZ R; BUNGENER L; BURGER J; BUSSER FW; BUNIATIAN A; BURKE S; BUSCHHORN G; CAMPBELL AJ; CARLI T; CHARLES F; CLARKE D; CLEGG AB; COLOMBO M; CONTRERAS JG; COUGHLAN JA; COURAU A; COUTURES C; COZZIKA G; CRIEGEE L; CUSSANS DG; CVACH J; DAGORET S; DAINTON JB; DANILOV M; DAU WD; DAUM K; DAVID M; DEFFUR E; DELCOURT B; DELBUONO L; DEROECK A; DEWOLF EA; DINEZZA P; DOLLFUS C; DOWELL JD; DREIS HB; DUBOC J; DULLMANN D; DUNGER O; DUHM H; EBERT J; EBERT TR; ECKERLIN G; EFREMENKO V; EGLI S; EHRLICHMANN H; EICHENBERGER S; EICHLER R; EISELE F; EISENHANDLER E; ELLISON RJ; ELSEN E; ERDMANN M; ERDMANN W; EVRARD E; FAVART L; FEDOTOV A; FEEKEN D; FELST R; FELTESSE J; FERENCEI J; FERRAROTTO F; FLAMM K; FLEISCHER M; FLIESER M; FLUGGE G; FOMENKO A; FOMINYKH B; FORBUSH M; FORMANEK J; FOSTER JM; FRANKE G; FRETWURST E; GABATHULER E; GABATHULER K; GAMERDINGER K; GARVEY J; GAYLER J; GEBAUER M; GELLRICH A; GENZEL H; GERHARDS R; GOERLACH U; GOERLICH L; GOGITIDZE N; GOLDBERG M; GOLDNE RD; GONZALEZPINEIRO B; GOODALL AM; GORELOV I; GORITCHEV P; GRAB C; GRASSLER H; GRASSLER R; GREENSHAW T; GRINDHAMMER G; GRUBER A; GRUBER C; HAACK J; HAIDT D; HAJDUK L; HAMON O; HAMPEL M; HANLON EM; HAPKE M; HAYNES WJ; HEATERINGTON J; HEDBERG V; HEINZELMANN G; HENDERSON RCW; HENSCHEL H; HERMA R; HERYNEK I; HESS MF; HILDESHEIM W; HILL P; HILLER KH; HILTON CD; HLADKY J; HOEGER KC; HOPPNER M; HORISBERGER R; HUET P; HUFNAGEL H; IBBOTSON M; ITTERBECK H; JABIOL MA; JACHOLKOWSKA A; JACOBSSON C; JAFFRE M; JANOTH J; JANSEN T; JONSSON L; JOHANNSEN K; JOHNSON DP; JOHNSON L; JUNG H; KALMUS PIP; KANT D; KASCHOWITZ R; KASSELMANN P; KATHAGE U; KAUFMANN HH; KAZARIAN S; KENYON IR; KERMICHE S; KEUKER C; KIESLING C; KLEIN M; KLEINWORT C; KNIES G; KO W; KOHLER T; KOLANOSKI H; KOLE F; KOLYA SD; KORBEL V; KORN M; KOSTKA P; KOTELNIKOV SK; KRASNY MW; KREHBIEL H; KRUCKER D; KRUGER U; KRUNERMARQUIS U; KUBENKA JP; KUSTER H; KUHLEN M; KURCA T; KURZHOFER J; KUZNIK B; LACOUR D; LAMARCHE F; LANDER R; LANDON MPJ; LANGE W; LANIUS P; LAPORTE JF; LEBEDEV A; LEVERENZ C; LEVONIAN S; LEY C; LINDNER A; LINDSTROM G; LINSEL F; LIPINSKI J; LIST B; LOCH P; LOHMANDER H; LOPEZ GC; LUKE D; MAGNUSSEN N; MALINOVSKI E; MANI S; MARACEK R; MARAGE P; MARKS J; MARSHALL R; MARTENS J; MARTIN R; MARTYN HU; MARTYNIAK J; MASSON S; MAVROIDIS T; MAXFIELD SJ; MCMAHON SJ; MEHTA A; MEIER K; MERCER D; MERZ T; MEYER CA; MEYER H; MEYER J; MIKOCKI S; MILSTEAD D; MOREAU F; MORRIS JV; MULLER G; MULLER K; MURIN P; NAGOVIZIN V; NAHNHAUER R; NAROSKA B; NAUMANN T; NEWMAN PR; NEWTON D; NEYRET D; NGUYEN HK; NIEBERGALL F; NIEBUHR C; NISIUS R; NOWAK G; NOYES GW; NYBERGWERTHER M; OBERLACK H; OBROCK U; OLSSON JE; PANARO E; PANITCH A; PASCAUD C; PATEL GD; PEPPEL E; PEREZ E; PHILLIPS JP; PICHLER C; PITZL D; POPE G; PRELL S; PROSI R; RADEL G; RAUPACH F; REIMER P; REINSHAGEN S; RIBARICS P; RIECH V; RIEDLBERGER J; RIESS S; RIETZ M; ROBERTSON SM; ROBMANN P; ROLOFF HE; ROOSEN R; ROSENBAUER K; ROSTOVTSEV A; ROUSE F; ROYON C; RUTER K; RUSAKOV S; RYBICKI K; RYLKO R; SAHLMANN N; SANCHEZ E; SANKEY DPC; SAVITSKY M; SCHACHT P; SCHIEK S; SCHLEPER P; VONSCHLIPPE W; SCHMIDT C; SCHMIDT D; SCHMIDT G; SCHONING A; SCHRODER V; SCHUHMANN E; SCHWAB B; SCHWIND A; SEEHAUSEN U; SEFKOW F; SEIDEL M; SELL R; SEMENOV A; SHEKELYAN V; SHEVIAKOV I; SHOOSHTARI H; SHTARKOV LN; SIEGMON G; SIEWERT U; SIROIS Y; SKILLICORN IO; SMIRNOV P; SMITH JR; SOLOVIEV Y; SPITZER H; STAROSTA R; STEENBOCK M; STEFFEN P; STEINBERG R; STELLA B; STEPHENS K; STIER J; STIEWE J; STOSSLEIN U; STRACHOTA J; STRAUMANN U; STRUCZINSKI W; SUTTON JP; TAPPROGGE S; TAYLOR RE; TCHERNYSHOV V; THIEBAUX C; THOMPSON G; TICHOMIROV I; TRUOL P; TURNAU J; TUTAS J; UELKES P; USIK A; VALKAR S; VALKAROVA A; VALLEE C; VANESCH P; VANMECHELEN P; VARTAPETIAN A; VAZDIK Y; VECKO M; VERRECCHIA P; VILLET G; WACKER K; WAGENER A; WAGENER M; WALKER IW; WALTHER A; WEBER G; WEBER M; WEGENER D; WEGNER A; WELLISCH HP; WEST LR; WILLARD S; WINDE M; WINTER GG; WRIGHT AE; WUNSCH E; WULFF N; YIOU TP; ZACEK J; ZARBOCK D; ZHANG Z; ZIMMER M; ZIMMERMANN W; ZOMER F; ZUBER K;
Indirizzi:
RHEIN WESTFAL TH AACHEN,INST PHYS 1 W-5100 AACHEN GERMANY UNIV BIRMINGHAM,SCH PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND VUB,ULB,INTER UNIV INST HIGH ENERGIES BRUSSELS BELGIUM RHEIN WESTFAL TH AACHEN,INST PHYS 3 W-5100 AACHEN GERMANY RUTHERFORD APPLETON LAB DIDCOT OX11 0QX OXON ENGLAND INST NUCL PHYS PL-31342 KRAKOW POLAND UNIV DORTMUND,INST PHYS W-4600 DORTMUND 50 GERMANY UNIV GLASGOW,DEPT PHYS & ASTRON GLASGOW G12 8QQ SCOTLAND UNIV BIRMINGHAM,SCH PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV INSTELLING ANTWERP B-2610 WILRIJK BELGIUM UNIV CALIF DAVIS,DEPT PHYS DAVIS CA 95616 UNIV CALIF DAVIS,IIRPA DAVIS CA 95616 DESY W-2000 HAMBURG 52 GERMANY UNIV HEIDELBERG,INST HOCHENERGIEPHYS W-6900 HEIDELBERG GERMANY CHRISTIAN ALBRECHTS UNIV KIEL,INST REINE & ANGEW KERNPHYS W-2300 KIEL1 GERMANY SLOVAK ACAD SCI,INST EXPTL PHYS KOSICE SLOVAKIA LUND UNIV,DEPT PHYS S-22101 LUND SWEDEN UNIV MANCHESTER,DEPT PHYS MANCHESTER M13 9PL LANCS ENGLAND ECOLE POLYTECH F-91128 PALAISEAU FRANCE SWISS FED INST TECHNOL,INST TEILCHENPHYS CH-8006 ZURICH SWITZERLAND UNIV ZURICH,INST PHYS CH-8006 ZURICH SWITZERLAND UNIV HAMBURG,INST EXPTL PHYS 1 W-2000 HAMBURG 13 GERMANY UNIV HAMBURG,INST EXPTL PHYS W-2000 HAMBURG 13 GERMANY UNIV HEIDELBERG,INST PHYS W-6900 HEIDELBERG GERMANY QUEEN MARY & WESTFIELD COLL LONDON ENGLAND UNIV LANCASTER,SCH PHYS & MAT LANCASTER LA1 4YL ENGLAND UNIV LIVERPOOL,DEPT PHYS LIVERPOOL L69 3BX ENGLAND MOSCOW THEORET & EXPTL PHYS INST MOSCOW RUSSIA LEBEDEV PHYS INST MOSCOW RUSSIA UNIV LIVERPOOL,DEPT PHYS LIVERPOOL L69 3BX ENGLAND UNIV AIX MARSEILLE 2,IN2P3,CNRS,CPPM F-13007 MARSEILLE FRANCE MAX PLANCK INST PHYS & ASTROPHYS MUNICH GERMANY UNIV PARIS 07,IN2P3,CNRS,CPPM F-75221 PARIS 05 FRANCE UNIV PARIS 07,IN2P3,CNRS F-75221 PARIS 05 FRANCE UNIV PARIS 11,IN2P3,CNRS,LAL F-91405 ORSAY FRANCE UNIV PARIS 06,LPNHE F-75005 PARIS FRANCE CZECHOSLOVAK ACAD SCI CS-11142 PRAGUE 1 CZECH REPUBLIC UNIV ZURICH,INST PHYS CH-8006 ZURICH SWITZERLAND STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,INST PHYS STANFORD CA 94305 UNIV ROMA LA SAPIENZA,DIPARTIMENTO FIS I-00185 ROME ITALY CHARLES UNIV,CTR NUCL PRAGUE CZECH REPUBLIC INFN ROMA ROME ITALY PAUL SCHERRER INST VILLIGEN SWITZERLAND BERG UNIV GESAMTHSCH WUPPERTAL,FACHBEREICH PHYS WUPPERTAL GERMANY DESY,INST HOCHENERGIEPHYS ZEUTHEN GERMANY CENS,CEA,DSM,DAPHNIA F-91190 GIF SUR YVETTE FRANCE
Titolo Testata:
Physics letters. Section B
fascicolo: 4, volume: 338, anno: 1994,
pagine: 507 - 518
SICI:
0370-2693(1994)338:4<507:POJPMA>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
LUND MONTE-CARLO; H1 EXPERIMENT; J-PSI; CHAMBER; ENERGY; TRIGGER; REGION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
T. Ahmed et al., "PHOTOPRODUCTION OF J PSI MESONS AT HERA", Physics letters. Section B, 338(4), 1994, pp. 507-518

Abstract

We present a study of J/psi meson production in collisions of 26.7 GeV electrons with 820 GeV protons, performed with the H1-detector at the HERA collider at DESY. The J/psi mesons are detected via their leptonic decays both to electrons and muons. Requiring exactly two particles in the detector, a cross section of sigma(ep --> J/psiX) = (8.8 +/- 2.2) nb is determined for 30 GeV less-than-or-equal-to W(gammap) less-than-or-equal-to 180 GeV and Q2 less-than-or-similar-to 4 GeV2. Using the flux of quasi-real photons with Q2 less-than-or-similar-to 4 GeV2,a total photoproduction cross section of sigma(gammap --> J/psiX) = (56 +/- 13 +/- 14) nb is derived at an average W(gammap) = 90 GeV. The distribution of the squared momentum transfer t from the proton to theJ/psi can be fitted using an exponential exp (-b\t\) elow a \t\ of 0.75 GeV2 yielding a slope parameter of b = (4.7 +/- 1.9) GeV-2.

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Documento generato il 01/12/20 alle ore 08:04:29