Inclusive [formula omitted] production in two-photon collisions at LEP

P Achard,A Kunin,D Vicinanza,V Shoutko,L Romero,E Pistolesi,P Extermann,V Koutsenko,A Krüger,Y Hu,A Bajo,F Behner,D Hatzifotiadou,J Berdugo,B Tellili,M Vivargent,M Chemarin,I Vetlitsky,U Becker,G Schwering,A Bay,M Bourquin,F Marzano,A Engler,W Wallraff,B Echenard,R Ramelli,T Azemoon,S Villa,M Pedace,S Reucroft,V Pojidaev,A Eline,S Sushkov,R Ranieri,M Wadhwa,G Rahal-Callot,D Perret-Gallix,K Riles,P Berges,G Ruggiero,P Levtchenko,C Dionisi,H Hofer,S Pensotti,G Baksay,A Arefiev,S Wynhoff,G Passaleva,L Tauscher,N Shivarov,G Holzner,N Batalova,M Gataullin,M Chamizo,V Plyaskin,J Ulbricht,L Servoli,G Zilizi,D Duchesneau,S Cucciarelli,D Haas,G Viertel,H Anderhub,W Krenz,S Saremi,I Vodopianov,M Napolitano,E Shumilov,H Vogt,A Gurtu,E Delmeire,G Coignet,F Anselmo,H Milcent,G Carlino,J Alcaraz,M Dierckxsens,E Valente,G Chiefari,C Furetta,S Likhoded,K Freudenreich,I Clare,H Suter,K Lübelsmeyer,Yu Zalite,B Musicar,S Bottai,A Chen,Yu Galaktionov,J Salicio,G Alemanni,B Stoyanov,K Sudhakar,D Ren,M Kräber,C Palomares,B Zimmermann,M Capell,M Rescigno,M Steuer,M Lebeau,R Leiste,T Siedenburg,F Denotaristefani,C Rosenbleck,A Lebedev,D Pandoulas,G Mirabelli,M Basile,R Berbeco,F Pierella,H Nowak,A Ewers,A Rosca,S Costantini,L Bellucci,J Casaus,D Käfer,S Banerjee,P Lebrun,B Borgia,A Barczyk,G Grenier,R Barillère,O Adriani,N Raja,W Kittel,A Shvorob,J Hirschfelder,S Shevchenko,T Paul,O Grimm,B Bertucci,M Pauluzzi,L Baksay,A Degré,G Landi,S Braccini,P Déglon,M Levtchenko,P Bartalini,E Fiandrini,S Patricelli,A Mihul,A Böhm,M Musy,A Favara,S Schmidt-Kaerst,Y S Lu ,R Hakobyan ,B L Betev ,M P Sanders ,K Deiters,W J Burger ,M Pohl,S Nagy,V Andreev ,S C Yeh ,G Chen,S.V Baldew,H Fesefeldt,M Dittmar,H Vogel,C Mañá ,X D Cai ,J D Swain ,P Wienemann,Giovanni Romeo ,M Hohlmann,D Della Volpe ,T Aziz,I Vorobiev,M Biasini,G Y Zhu ,K L Tung ,A Hervé,L Cifarelli,M Kopál ,Virendra K Gupta ,P Le Coultre ,M N Kienzle‐Focacci ,O L Fedin ,M A Rahaman ,A J.m Muijs ,J H Field ,L Merola,P Ladrón De Guevara ,J Allaby,W Lohmann,R De Asmundis ,J P Martin ,C Timmermans,D Piccolo,T Hebbeker,F Filthaut,A Klimentov,B N Jin ,П Спиллантини ,D Teyssier,S M Ting ,R W Kraemer ,P Raics,G J Bobbink ,C Paus,L Boldizsár ,F Cindolo,H B Newman ,L Lista,M W Gruenewald ,J J Blaising ,H El Mamouni ,J Kirkby,C G Yang ,P H Fisher ,S Gentile,Z.A Liu,S Giagu,Stefan Roth ,M Meschini,G Vesztergombi,A Doria,E Sánchez ,D Mangeol,M Guida,P Bagnaia,T Ferguson,V Veszprémi ,A Biland,F Cavallari,A A Vorobyov ,P Lecoq,N Cavallo,A De Salvo ,Sonia Natale ,L W Jones ,A Sakharov,S Rosier‐Lees ,J Pothier,C Tully,Samuel C.c Ting ,Y H Chang ,P Tarján ,X W Tang ,J Mnich,I Josa-Mutuberrı́A,M Kaur,R A Ofierzynski ,J Debreczeni,P A Razis ,R Van Gulik ,C Sciacca,K Mazumdar,D Stickland ,E Longo,H.F Chen,J Zhao,J.K Kim,I B Laktineh ,А Малинин ,R T Van De Walle ,A Zalite ,J M Le Goff ,J Fay,Z Xu ,Hai Yang ,R Y Zhu ,C Cecchi,S Mele,Z Szillási ,A Raspereza,D Bourilkov,Ma Wen-Gan ,F Pauß ,M T Dova ,H G Wilkens ,L Taylor,J Mans,W Lustermann,C Luci,A Zichichi,B De La Cruz ,G S Muanza ,R Clare,W J Metzger ,P Lecomte,L Z Sun ,F Nessi‐Tedaldi ,P Piroué ,N Colino,J A Van Dalen ,A M Cartacci ,M Aguilar-Benı́tez ,D J Schotanus ,H.S Chen,A C König ,B A Petersen ,F Linde ,C H Lin ,R Battiston,G Forconì ,D Prokofiev,S Riemann,C Schäfer,L Gutay ,M Felcini,Z.P Zhang,D Schmitz,W Fisher,M Diemoz,S Blyth ,M G Alviggi ,S Vlachos,P Garcı́a-Abia ,P Denes,J Quartieri,P.G Rancoita,J Yamamoto,A Straessner,S C Tonwar ,B Z Yang ,G Sultanov,Z.M Wang,M Weber,L Xia,R Paramatti,F M Brochu ,M Biglietti,H.L Zhuang,M Cerrada,S Sarkar,M A Falagán ,V A Schegelsky ,R R Mcneil ,F Becattini,P De Jong ,S N Ganguli ,J D Burger ,J A Rubio ,L Malgeri,I Fisk,A Nisati,F J Eppling ,H Rykaczewski,Z F Gong ,M Pioppí ,T Nießen ,A Aloisio,H Schopper,S Hou ,G B Mohanty ,Min Yang ,B P Roe ,S Falciano,B Roux,W Lin ,G Organtini,L Luminari,G.M Chen,J G Branson ,C Li,D C Son ,X.L Wang,J Tóth,P Paolucci,Margot Zöller

doi:10.1016/s0370-2693(02)01769-0

Abstract

Inclusive D ∗± production in two-photon collisions is studied with the L3 detector at LEP, using 683 pb −1 of data collected at centre-of-mass energies from 183 to 209 GeV. Differential cross sections are determined as functions of the transverse momentum and pseudorapidity of the D ∗± mesons in the kinematic region 1 GeV< P T <12 GeV and | η|<1.4. The cross sections σ( e +e −→e +e −D ∗±X ) in this kinematical region is measured and the σ( e +e −→e +e −c c ̄ X ) cross section is derived. The measurements are compared with next-to-leading order perturbative QCD calculations.

Full Text