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FIRST EVIDENCE OF HARD SCATTERING PROCESSES IN SINGLE TAGGED GAMMA-GAMMA-COLLISIONS

Title:	FIRST EVIDENCE OF HARD SCATTERING PROCESSES IN SINGLE TAGGED GAMMA-GAMMA-COLLISIONS
Authors:	ABREU P; ADAM W; ADYE T; AGASI E; AJINENKO I; ALEKSAN R; ALEKSEEV GD; ALLPORT PP; ALMEHED S; ALMEIDA FML; ALVSVAAG SJ; AMALDI U; ANDREAZZA A; ANDRIEUX ML; ANTILOGUS P; APEL WD; ARNOUD Y; ASMAN B; AUGUSTIN JE; AUGUSTINUS A; BAILLON P; BAMBADE P; BARAO F; BARATE R; BARBIELLINI G; BARDIN DY; BARKER GJ; BARONCELLI A; BARRING O; BARRIO JA; BARTL W; BATES MJ; BATTAGLIA M; BAUBILLIER M; BAUDOT J; BECKS KH; BEGALLI M; BEILLIERE P; BELTRAN P; BENVENUTI AC; BERGGREN M; BERTRAND D; BIANCHI F; BIGI M; BILENKY MS; BILLOIR P; BJARNE J; BLOCH D; BLYTH S; BOCCI V; BOGOLUBOV PN; BOLOGNESE T; BONESINI M; BONIVENTO W; BOOTH PSL; BORISOV G; BOSIO C; BOSTJANCIC B; BOSWORTH S; BOTNER O; BOUQUET B; BOURDARIOS C; BOWCOCK TJV; BOZZO M; BRAIBANT S; BRANCHINI P; BRAND KD; BRENNER RA; BRIAND H; BRICMAN C; BRILLAULT L; BROWN RCA; BRUNET JM; BUGGE L; BURAN T; BUYS A; CACCIA M; CALVI M; CAMACHOROZAS AJ; CAMPORESI T; CANALE V; CANEPA M; CANKOCAK K; CAO F; CARENA F; CARRILHO P; CARROLL L; CASO C; CASSIO V; CASTILLOGIMENEZ MV; CATTAI A; CAVALLO FR; CERRITO L; CHABAUD V; CHAN A; CHARPENTIER P; CHAUSSARD L; CHAUVEAU J; CHECCHIA P; CHELKOV GA; CHLIAPNIKOV P; CHOROWICZ V; CHRIN JTM; CINDRO V; COLLINS P; CONTRERAS JL; CONTRI R; CORTINA E; COSME G; COUCHOT F; CRAWLEY HB; CRENNELL D; CROSETTI G; MAESTRO JC; CZELLAR S; DAHLJENSEN E; DAHM J; DALMAGNE B; DAM M; DAMGAARD G; DAUBIE E; DAUM A; DAUNCEY PD; DAVENPORT M; DASILVA W; DEFOIX C; DELPIERRE P; DEMARIA N; DEANGELIS A; DEBOECK H; DEBOER W; DEBRABANDERE S; DECLERCQ C; DEFEZLASO MDM; DELAVAISSIERE C; DEMIN A; DEPAULA L; DESAINTJEAN C; DIJKSTRA H; DICIACCIO L; DJAMA F; DOLBEAU J; DONSZELMANN M; DOROBA K; DRACOS M; DREES J; DRIS M; DUFOUR Y; DUPONT F; EDSALL D; EHRET R; EKELOF T; EKSPONG G; ELSING M; ENGEL JP; ERSHAIDAT N; SANTO ME; FASSOULIOTIS D; FEINDT M; FERRER A; FILIPPAS TA; FIRESTONE A; FOETH H; FOKITIS E; FONTANELLI F; FORMENTI F; FOUSSET JL; FRANEK B; FRENKIEL P; FRIES DC; FRODESEN AG; FRUHWIRTH R; FULDAQUENZER F; FURSTENAU H; FUSTER J; GAMBA D; GANDELMAN M; GARCIA C; GARCIA J; GASPAR C; GASPARINI U; GAVILLET P; GAZIS EN; GELE D; GERBER JP; GILLESPIE D; GOKIELI R; GOLOB B; GOLOVATYUK VM; CADENAS JJGY; GOPAL G; GORN L; GORSKI M; GRACCO V; GRARD F; GRAZIANI E; GROSDIDIER G; GUNNARSSON P; GUY J; HAEDINGER U; HAHN F; HAHN M; HAHN S; HAIDER S; HAJDUK Z; HAKANSSON A; HALLGREN A; HAMACHER K; HAO W; HARRIS FJ; HEDBERG V; HENRIQUES R; HERNANDEZ JJ; HERNANDO JA; HERQUET P; HERR H; HESSING TL; HIGON E; HILKE HJ; HILL TS; HOLMGREN SO; HOLT PJ; HOLTHUIZEN D; HONORE PF; HOULDEN M; HRUBEC J; HUET K; HULTQVIST K; IOANNOU P; IVERSEN PS; JACKSON JN; JACOBSSON R; JALOCHA P; JARLSKOG G; JARRY P; JEANMARIE B; JOHANSSON EK; JONSSON L; JUILLOT P; KAISER M; KALMUS G; KAPUSTA F; KARLSSON M; KARVELAS E; KATARGIN A; KATSANEVAS S; KATSOUFIS EC; KERANEN R; KHOMENKO BA; KHOVANSKI NN; KING B; KJAER NJ; KLEIN H; KLOVNING A; KLUIT P; KOCHMEHRIN A; KOEHNE JH; KOENE B; KOKKINIAS P; KORATZINOS M; KORCYL K; KORYTOV AV; KOSTIOUKHINE V; KOURKOUMELIS C; KOUZNETSOV O; KRAMER PH; KREUTER C; KROLIKOWSKI J; KRONKVIST I; KRUPINSKI W; KULKA K; KURVINEN K; LACASTA C; LAKTINEH I; LAMBROPOULOS C; LAMSA JW; LANCERI L; LANGEFELD P; LAPIN V; LAST I; LAUGIER JP; LAUHAKANGAS R; LEDER G; LEDROIT F; LEITNER R; LEMOIGNE Y; LEMONNE J; LENZEN G; LEPELTIER V; LESIAK T; LEVY JM; LIEB E; LIKO D; LINDNER R; LIPNIACKA A; LIPPI I; LOERSTAD B; LOKAJICEK M; LOKEN JG; LOPEZFERNANDEZ A; AGUERA MAL; LOS M; LOUKAS D; LOZANO JJ; LUTZ P; LYONS L; MAEHLUM G; MAILLARD J; MAIO A; MALTEZOS A; MANDL F; MARCO J; MARECHAL B; MARGONI M; MARIN JC; MARIOTTI C; MARKOU A; MARON T; MARTI S; MARTINEZRIVERO C; MARTINEZVIDAL F; MATORRAS F; MATTEUZZI C; MATTHIAE G; MAZZUCATO M; MCCUBBIN M; MCKAY R; MCNULTY R; MEDBO J; MERONI C; MEYER WT; MIAGKOV A; MICHELOTTO M; MIGLIORE E; MIKULEC I; MIRABITO L; MITAROFF WA; MITSELMAKHER GV; MJOERNMARK U; MOA T; MOELLER R; MOENIG K; MONGE MR; MORETTINI P; MUELLER H; MURRAY WJ; MURYN B; MYATT G; NARAGHI F; NAVARRIA FL; NAVAS S; NEGRI P; NEMECEK S; NEUMANN W; NEUMEISTER N; NICOLAIDOU R; NIELSEN BS; NIKOLAENKO V; NISS P; NOMEROTSKI A; NORMAND A; OBRAZTSOV V; OLSHEVSKI AG; ORAVA R; OSTERBERG K; OURAOU A; PAGANINI P; PAGANONI M; PAIN R; PALKA H; PAPADOPOULOU TD; PAPE L; PARODI F; PASSERI A; PEGORARO M; PENNANEN J; PERALTA L; PERNEGGER H; PERNICKA M; PERROTTA A; PETRIDOU C; PETROLINI A; PHILLIPS HT; PIANA G; PIERRE F; PIMENTA M; PLASZCZYNSKI S; PODOBRIN O; POL ME; POLOK G; POROPAT P; POZDNIAKOV V; PREST M; PRIVITERA P; PULLIA A; RADOJICIC D; RAGAZZI S; RAHMANI H; RAMES J; RATOFF PN; READ AL; REALE M; REBECCHI P; RADAELLI NG; REGLER M; REID D; RENTON PB; RESVANIS LK; RICHARD F; RICHARDSON J; RIDKY J; RINAUDO G; RIPP I; ROMERO A; RONCAGLIOLO I; RONCHESE P; ROOS L; ROSENBERG EI; ROSSO E; ROUDEAU P; ROVELLI T; RUCKSTUHL W; RUHLMANNKLEIDER V; RUIZ A; RYBICKI K; SAARIKKO H; SACQUIN Y; SAJOT G; SALT J; SANCHEZ J; SANNINO M; SCHNEIDER H; SCHYNS MAE; SCIOLLA G; SEGAR AM; SEITZ A; SEKULIN R; SESSA M; SEUFERT R; SHELLARD RC; SICCAMA I; SIEGRIST P; SIMONETTI S; SIMONETTO F; SISAKIAN AN; SKAALI TB; SMADJA G; SMIRNOVA O; SMITH GR; SOKOLOV A; SOSNOWSKI R; SOUZASANTOS D; SPASSOV T; SPIRITI E; SCUARCIA S; STAECK H; STANESCU C; STAPNES S; STAVITSKI I; STAVROPOULOS G; STEPANIAK K; STICHELBAUT F; STOCCHI A; STRAUSS J; STRAVER J; STRUB R; STUGU B; SZCZEKOWSKI M; SZEPTYCKA M; TABARELLI T; TCHIKILEV O; THEODOSIOU GE; THOME Z; TILQUIN A; TIMMERMANS J; TIMOFEEV VG; TKATCHEV LG; TODOROV T; TOET DZ; TOMARADZE A; TOME B; TORASSA E; TORTORA L; TRANSTROMER G; TREILLE D; TRISCHUK W; TRISTRAM G; TRONCON C; TSIROU A; TSYGANOV EN; TURALA M; TURLUER ML; TUUVA T; TYAPKIN IA; TYNDEL M; TZAMARIAS S; UEBERSCHAER B; UEBERSCHAER S; ULLALAND O; UVAROV V; VALENTI G; VALLAZZA E; FERRER JAV; VANDERVELDE C; VANAPELDOORN GW; VANDAM P; VANDONINCK WK; VANELDIK J; VEGNI G; VENTURA L; VENUS W; VERBEURE F; VERLATO M; VERTOGRADOV LS; VILANOVA D; VINCENT P; VITALE L; VLASOV E; VODOPYANOV AS; VOLLMER M; VOUTILAINEN M; VRBA V; WAHLEN H; WALCK C; WALDNER F; WEHR A; WEIERSTALL M; WEILHAMMER P; WETHERELL AM; WICKENS JH; WIELERS M; WILKINSON GR; WILLIAMS WSC; WINTER M; WITEK M; WORMSER G; WOSCHNAGG K; YIP K; YUSHCHENKO O; ZACH F; ZAITSEV A; ZALEWSKA A; ZALEWSKI P; ZAVRTANIK D; ZEVGOLATAKOS E; ZIMIN NI; ZITO M; ZONTAR D; ZUBERI R; ZUCCHELLI GC; ZUMERLE G.; DE LOTTO, Barbara; SCURI, Fabrizio
Contributors:	Abreu, P; Adam, W; Adye, T; Agasi, E; Ajinenko, I; Aleksan, R; Alekseev, Gd; Allport, Pp; Almehed, S; Almeida, Fml; Alvsvaag, Sj; Amaldi, U; Andreazza, A; Andrieux, Ml; Antilogus, P; Apel, Wd; Arnoud, Y; Asman, B; Augustin, Je; Augustinus, A; Baillon, P; Bambade, P; Barao, F; Barate, R; Barbiellini, G; Bardin, Dy; Barker, Gj; Baroncelli, A; Barring, O; Barrio, Ja; Bartl, W; Bates, Mj; Battaglia, M; Baubillier, M; Baudot, J; Becks, Kh; Begalli, M; Beilliere, P; Beltran, P; Benvenuti, Ac; Berggren, M; Bertrand, D; Bianchi, F; Bigi, M; Bilenky, M; Billoir, P; Bjarne, J; Bloch, D; Blyth, S; Bocci, V; Bogolubov, Pn; Bolognese, T; Bonesini, M; Bonivento, W; Booth, Psl; Borisov, G; Bosio, C; Bostjancic, B; Bosworth, S; Botner, O; Bouquet, B; Bourdarios, C; Bowcock, Tjv; Bozzo, M; Braibant, S; Branchini, P; Brand, Kd; Brenner, Ra; Briand, H; Bricman, C; Brillault, L; Brown, Rca; Brunet, Jm; Bugge, L; Buran, T; Buys, A; Caccia, M; Calvi, M; Camachorozas, Aj; Camporesi, T; Canale, V; Canepa, M; Cankocak, K; Cao, F; Carena, F; Carrilho, P; Carroll, L; Caso, C; Cassio, V; Castillogimenez, Mv; Cattai, A; Cavallo, Fr; Cerrito, L; Chabaud, V; Chan, A; Charpentier, P; Chaussard, L; Chauveau, J; Checchia, P; Chelkov, Ga
Publisher Information:	Elsevier BV:PO Box 211, 1000 AE Amsterdam Netherlands:011 31 20 4853757, 011 31 20 4853642, 011 31 20 4853641, EMAIL: nlinfo-f@elsevier.nl, INTERNET: http://www.elsevier.nl, Fax: 011 31 20 4853598
Publication Year:	1995
Collection:	Università degli Studi di Udine: CINECA IRIS
Description:	For the first time, multihadronic production from single tagged gamma gamma collisions has been studied, where one of the scattered leptons was tagged at very low virtual photon absolute mass squared ([Q(2)] = 0.06 (GeV/c(2))(2)). Data collected during 1991 and 1992 in the DELPHI experiment at LEP are shown to agree well with predictions which included the non-perturbative vector meson dominance model in which the interacting photons are assumed to have converted into a vector meson (rho, omega or pi), a quark-parton model which describes direct photon interactions and a QCD-based model which considers the photon to have quark and gluon structure functions. Five different parametrizations of these structure functions were used and the predictions compared with the data. This study confirms recent results from no-tag experiments in requiring a QCD-based component to successfully describe the data, indicating that the photon has a significant partonic content.
Document Type:	article in journal/newspaper
Language:	unknown
Relation:	info:eu-repo/semantics/altIdentifier/wos/WOS:A1995QC49900061; volume:342; issue:1-4; firstpage:402; lastpage:416; numberofpages:15; journal:PHYSICS LETTERS. SECTION B; http://hdl.handle.net/11390/883674
DOI:	10.1016/0370-2693(94)01522-E
Availability:	http://hdl.handle.net/11390/883674; https://doi.org/10.1016/0370-2693(94)01522-E
Accession Number:	edsbas.58AAED65
Database:	BASE