Search for Third Generation Vector Leptoquarks Inpp¯collisions Ats=1.96 TeV

T. Aaltonen,A. Abulencia,J. Adelman,T. Affolder,T. Akimoto,M. G. Albrow, S. Amerio,D. Amidei,A. Anastassov,K. Anikeev,A. Annovi,J. Antos,M. Aoki,G. Apollinari,T. Arisawa,A. Artikov,W. Ashmanskas,A. Attal,A. Aurisano, F. Azfar,P. Azzi-Bacchetta,P. Azzurri,N. Bacchetta,W. Badgett,A. Barbaro-Galtieri,V. E. Barnes,B. A. Barnett,S. Baroiant,V. Bartsch,G. Bauer,P.-H. Beauchemin,F. Bedeschi,S. Behari, G. Bellettini,J. Bellinger,A. Belloni,D. Benjamin, A. Beretvas,J. Beringer,T. Berry,A. Bhatti,M. Binkley,D. Bisello,I. Bizjak,R. E. Blair,C. Blocker,B. Blumenfeld,A. Bocci,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. S. Budd, S. Budd,K. Burkett, G. Busetto,P. Bussey, A. Buzatu,K. L. Byrum,S. Cabrera,M. Campanelli,M. Campbell,F. Canelli,A. Canepa,S. Carrillo, D. Carlsmith,R. Carosi,S. Carron,B. Casal,M. Casarsa, A. Castro,P. Catastini,D. Cauz,M. Cavalli-Sforza,A. Cerri,L. Cerrito, S. H. Chang,Y. C. 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Yang, Y. C. Yang, W. M. Yao,G. P. Yeh,J. Yoh,K. Yorita,T. Yoshida,G. B. Yu,I. Yu,S. S. Yu,J. C. Yun,L. Zanello, A. Zanetti,I. Zaw, X. Zhang,J. Zhou,S. Zucchelli

Physical review D Particles, fields, gravitation, and cosmology/Physical review D, Particles, fields, gravitation, and cosmology（2008）

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摘要

We search for a third generation vector leptoquark ($VLQ3$) that decays to a $b$ quark and tau lepton using the CDF II detector and $320\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ of integrated luminosity from the Fermilab Tevatron. Observing a number of events in agreement with standard model expectations, we obtain, assuming Yang-Mills (minimal) couplings, the most stringent upper limit on the $VLQ3$ pair production cross section of 344 fb (493 fb) and lower limit on the $VLQ3$ mass of $317\text{ }\text{ }\mathrm{GeV}/{c}^{2}$ ($251\text{ }\text{ }\mathrm{GeV}/{c}^{2}$) at 95% C.L.

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