Measurement of the cross section for open-beauty production in photon–photon collisions at LEP

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

doi:10.1016/j.physletb.2005.05.072

Measurement of the cross section for open-beauty production in photon–photon collisions at LEP

P Achard, I Pal + Show 351 more

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https://doi.org/10.1016/j.physletb.2005.05.072

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Journal: Physics Letters B	Publication Date: Jun 8, 2005
Citations: 14	License type: cc-by-nc-sa

Affiliation: University of Geneva, INFN Sezione di Roma I, University of Michigan–Ann Arbor, Board of the Swiss Federal Institutes of Technology, ETH Zurich, Tata Institute of Fundamental Research, National Institute for Subatomic Physics, University of Amsterdam, Florida Institute of Technology, California Institute of Technology, University of Lausanne, Institute for Theoretical and Experimental Physics, Cemat (Italy), Massachusetts Institute of Technology, RWTH Aachen University, University of Bucharest, Sapienza University of Rome, INFN Sezione di Bologna, University of Bologna, Claude Bernard University Lyon 1, University of Florence, INFN Sezione di Firenze, Carnegie Mellon University, National Central University, Laboratoire d'Annecy-le-Vieux de Physique des Particules, European Organization for Nuclear Research, INFN Sezione di Napoli, Louisiana State University

#Production In Photon #Cross Section For Production + Show 8 more

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Abstract

The cross section for open-beauty production in photon–photon collisions is measured using the whole high-energy and high-luminosity data sample collected by the L3 detector at LEP. This corresponds to 627 pb−1 of integrated luminosity for electron–positron centre-of-mass energies from 189 to 209 GeV. Events containing b quarks are identified through their semi-leptonic decay into electrons or muons. The e+e−→e+e−bb¯X cross section is measured within our fiducial volume and then extrapolated to the full phase space. These results are found to be in significant excess with respect to Monte Carlo predictions and next-to-leading order QCD calculations.

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