Cross section measurements of high-pT dilepton final-state processes using a global fitting method
A. Abulencia,J. Adelman,T. Affolder,T. Akimoto,M. G. Albrow,D. Ambrose,S. Amerio,D. Amidei,A. Anastassov,K. Anikeev,A. Annovi,J. Antos,M. Aoki,G. Apollinari,J.-F. Arguin,T. Arisawa,A. Artikov,W. Ashmanskas,A. Attal,F. Azfar,P. Azzi-Bacchetta,P. Azzurri,N. Bacchetta,W. Badgett,A. Barbaro-Galtieri,V. Barnes,B. Barnett,S. Baroiant,V. Bartsch,G. Bauer,F. Bedeschi,S. Behari,S. Belforte,G. Bellettini,J. Bellinger,A. Beretvas,D. Benjamin,A. Beretvas,J. Beringer,T. Berry,A. Bhatti,M. Binkley,D. Bisello,R. Blair,C. Blocker,B. Blumenfeld,A. Bolshov,A. Bodek,V. Boisvert,G. Bolla,A. Bolshov,D. Bortoletto,J. Boudreau,A. Boveia,B. Brau,L. Brigliadori,C. Bromberg,E. Brubaker,J. Budagov,H. Budd,S. Budd,S. Budroni,K. Burkett,G. Busetto,P. Bussey,K. Byrum,S. Cabrera,M. Campanelli,M. Campbell,F. Canelli,A. Canepa,S. Carillo,D. Carlsmith,R. Carosi,S. Carron,M. Cavalli-Sforza,A. Castro,P. Catastini,D. Cauz,M. Cavalli-Sforza,A. Cerri,L. Cerrito,S. Chang,Y. Chen,M. Chertok,G. Chiarelli,G. Chlachidze,F. Chlebana,I. Cho,K. Cho,D. Chokheli,J. Chou,G. Choudalakis,S. Chuang,K. Chung,W. Chung,Y. Chung,M. Ciljak,C. Ciobanu,M. Ciocci,A. Clark,D. Clark,M. Coca,G. Compostella,M. Convery,J. Conway,B. Cooper,K. Copic,M. Cordelli,G. Cortiana,F. Crescioli,C. Almenar,J. Cuevas,R. Culbertson,J. Cully,D. Cyr,S. DaRonco,M. Datta,S. D’Auria,T. Davies,M. D’Onofrio,D. Dagenhart,P. de Barbaro,S. DeCecco,A. Deisher,G. De Lentdecker,M. Dell’Orso,F. Delli Paoli,L. Demortier,J. Deng,M. Deninno,D. De Pedis,P. Derwent,G. Di Giovanni,C. Dionisi,B. Di Ruzza,J. Dittmann,P. DiTuro,C. Dörr,S. Donati,M. Donega,P. Dong,J. Donini,T. Dorigo,S. Dube,J. Efron,R. Erbacher,D. Errede,S. Errede,R. Eusebi,H. Fang,S. Farrington,I. Fedorko,W. Fedorko,R. Feild,M. Feindt,J. Fernandez,R. Field,G. Flanagan,A. Foland,S. Forrester,G. Foster,M. Franklin,J. Freeman,I. Furic,M. Gallinaro,J. Galyardt,J. Garcia,F. Garberson,A. Garfinkel,C. Gay,H. Gerberich,D. Gerdes,S. Giagu,P. Giannetti,A. Gibson,K. Gibson,J. Gimmell,C. Ginsburg,N. 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Trischuk,R. Tsuchiya,S. Tsuno,N. Turini,F. Ukegawa,T. Unverhau,S. Uozumi,D. Usynin,S. Vallecorsa,N. van Remortel,A. Varganov,E. Vataga,F. Vázquez,G. Velev,G. Veramendi,V. Veszpremi,R. Vidal,I. Vila,R. Vilar,T. Vine,I. Vollrath,I. Volobouev,G. Volpi,F. Würthwein,P. Wagner,R. Wagner,J. Wagner,W. Wagner,R. Wallny,S. Wang,A. Warburton,S. Waschke,D. Waters,M. Weinberger,W. Wester,B. Whitehouse,D. Whiteson,A. Wicklund,E. Wicklund,G. Williams,H. Williams,P. Wilson,B. Winer,P. Wittich,S. Wolbers,C. Wolfe,T. Wright,X. Wu,S. Wynne,A. Yagil,K. Yamamoto,J. Yamaoka,T. Yamashita,C. Yang,U. Yang,Y. Yang,W. Yao,G. Yeh,J. Yoh,K. Yorita,T. Yoshida,G. Yu,I. Yu,S. Yu,J. Yun,L. Zanello,A. Zanetti,I. Zaw,X. Zhang,J. Zhou,S. Zucchelli
PHYSICAL REVIEW D(2008)
引用 14|浏览285
摘要
We present a new method for studying high-p(T) dilepton events (e(+/-)e(-/+), mu(+/-)mu(-/+), e(+/-)mu(-/+)) and simultaneously extracting the production cross sections of p (p) over bar -> t (t) over bar, p (p) over bar -> W+W-, and p (p) over bar -> Z(0) -> tau(+)tau(-) at a center-of-mass energy of root s = 1.96 TeV. We perform a likelihood fit to the dilepton data in a parameter space defined by the missing transverse energy and the number of jets in the event. Our results, which use 360 pb(-1) of data recorded with the CDF II detector at the Fermilab Tevatron Collider, are sigma(t (t) over bar) = 8.5(-2.2)(+2.7) pb, sigma(W+W-) = 16.3(-4.4)(+5.2) pb, and sigma(Z(0) -> tau(+)tau(-)) = 291(-46)(+50) pb.
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关键词
particle acceleration,center of mass,elementary particles,parameter space,cross section
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