Measurement of the t(t)over-bar production cross section in 2 fb(-1) of p(p)over-bar collisions at root s = 1.96 TeV using lepton plus jets events with soft muon b tagging

T. Aaltonen,Jahred Adelman, T. Akimoto,B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov,Alberto Annovi, J. Antos,Giorgio Apollinari, A. Apresyan, Tetsuo Arisawa, A. Artikov, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar,Paolo Azzurri, W. Badgett, A. Barbaro-Galtieri, Virgil E Barnes,B. A. Barnett,V. Bartsch,G. Bauer,P. H. Beauchemin, F. Bedeschi, D. Beecher,S. Behari, G. Bellettini, J. Bellinger,Douglas Benjamin, Andrew Beretvas,J. Beringer,A. Bhatti,M. Binkley,Dario Bisello, I. Bizjak,R. E. Blair, C. Blocker,Barry Blumenfeld, Andrea Bocci,Arie Bodek, V. Boisvert, G. Bolla,Daniela Bortoletto, J. Boudreau, A. Boveia, B. Brau, A. Bridgeman, L. Brigliadori, C. Bromberg, E. Brubaker, J. Budagov, H. S. Budd, S. Budd, S. Burke, Kevin Burkett, G. Busetto, Peter Bussey, A. Buzatu, K. L. Byrum,S. Cabrera, C. Calancha, Manuela Campanelli, M. Campbell, F. Canelli, A. Canepa, B. Carls,Duncan Carlsmith, R. Carosi, S. Carrillo, S. Carron,B. Casal, M. Casarsa,Andrea Castro, P. Catastini, D. Cauz, V. Cavaliere, Matteo Cavalli-Sforza,Alessandro Cerri, Lucio Cerrito,Shih-Fu Chang, Y. C. Chen, Maxwell Chertok, G. Chiarelli, G. Chlachidze, F. Chlebana, K. Cho, D. Chokheli, J. P. Chou, Georgios Choudalakis, S. H. Chuang, K. Chung

Physical Review D（2009）

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摘要

We present a measurement of the t{bar t} production cross section in p{bar p} collisions at {radical}s = 1.96 TeV using events containing a high transverse momentum electron or muon, three or more jets, and missing transverse energy. Events consistent with t{bar t} decay are found by identifying jets containing candidate heavy-flavor semileptonic decays to muons. The measurement uses a CDF Run II data sample corresponding to 2 fb{sup -1} of integrated luminosity. Based on 248 candidate events with three or more jets and an expected background of 79.5 {+-} 5.3 events, we measure a production cross section of 9.1 {+-} 1.6 pb.

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