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Tevatron Combination of Single-Top-Quark Cross Sections and Determination of the Magnitude of the Cabibbo-Kobayashi-Maskawa Matrix Element V_{tb}.

  • Author(s): Aaltonen, T;
  • Abazov, VM;
  • Abbott, B;
  • Acharya, BS;
  • Adams, M;
  • Adams, T;
  • Agnew, JP;
  • Alexeev, GD;
  • Alkhazov, G;
  • Alton, A;
  • Amerio, S;
  • Amidei, D;
  • Anastassov, A;
  • Annovi, A;
  • Antos, J;
  • Apollinari, G;
  • Appel, JA;
  • Arisawa, T;
  • Artikov, A;
  • Asaadi, J;
  • Ashmanskas, W;
  • Askew, A;
  • Atkins, S;
  • Auerbach, B;
  • Augsten, K;
  • Aurisano, A;
  • Avila, C;
  • Azfar, F;
  • Badaud, F;
  • Badgett, W;
  • Bae, T;
  • Bagby, L;
  • Baldin, B;
  • Bandurin, DV;
  • Banerjee, S;
  • Barbaro-Galtieri, A;
  • Barberis, E;
  • Baringer, P;
  • Barnes, VE;
  • Barnett, BA;
  • Barria, P;
  • Bartlett, JF;
  • Bartos, P;
  • Bassler, U;
  • Bauce, M;
  • Bazterra, V;
  • Bean, A;
  • Bedeschi, F;
  • Begalli, M;
  • Behari, S;
  • Bellantoni, L;
  • Bellettini, G;
  • Bellinger, J;
  • Benjamin, D;
  • Beretvas, A;
  • Beri, SB;
  • Bernardi, G;
  • Bernhard, R;
  • Bertram, I;
  • Besançon, M;
  • Beuselinck, R;
  • Bhat, PC;
  • Bhatia, S;
  • Bhatnagar, V;
  • Bhatti, A;
  • Bland, KR;
  • Blazey, G;
  • Blessing, S;
  • Bloom, K;
  • Blumenfeld, B;
  • Bocci, A;
  • Bodek, A;
  • Boehnlein, A;
  • Boline, D;
  • Boos, EE;
  • Borissov, G;
  • Bortoletto, D;
  • Borysova, M;
  • Boudreau, J;
  • Boveia, A;
  • Brandt, A;
  • Brandt, O;
  • Brigliadori, L;
  • Brock, R;
  • Bromberg, C;
  • Bross, A;
  • Brown, D;
  • Brucken, E;
  • Bu, XB;
  • Budagov, J;
  • Budd, HS;
  • Buehler, M;
  • Buescher, V;
  • Bunichev, V;
  • Burdin, S;
  • Burkett, K;
  • Busetto, G;
  • Bussey, P;
  • Buszello, CP;
  • Butti, P;
  • Buzatu, A;
  • Calamba, A;
  • Camacho-Pérez, E;
  • Camarda, S;
  • Campanelli, M;
  • Canelli, F;
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  • Carlsmith, D;
  • Carosi, R;
  • Carrillo, S;
  • Casal, B;
  • Casarsa, M;
  • Casey, BCK;
  • Castilla-Valdez, H;
  • Castro, A;
  • Catastini, P;
  • Caughron, S;
  • Cauz, D;
  • Cavaliere, V;
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  • Cerrito, L;
  • Chakrabarti, S;
  • Chan, KM;
  • Chandra, A;
  • Chapon, E;
  • Chen, G;
  • Chen, YC;
  • Chertok, M;
  • Chiarelli, G;
  • Chlachidze, G;
  • Cho, K;
  • Cho, SW;
  • Choi, S;
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  • CDF Collaboration;
  • D0 Collaboration
  • et al.
Abstract

We present the final combination of CDF and D0 measurements of cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7 fb^{-1} per experiment. The t-channel cross section is measured to be σ_{t}=2.25_{-0.31}^{+0.29} pb. We also present the combinations of the two-dimensional measurements of the s- vs t-channel cross section. In addition, we give the combination of the s+t channel cross section measurement resulting in σ_{s+t}=3.30_{-0.40}^{+0.52} pb, without assuming the standard model value for the ratio σ_{s}/σ_{t}. The resulting value of the magnitude of the top-to-bottom quark coupling is |V_{tb}|=1.02_{-0.05}^{+0.06}, corresponding to |V_{tb}|>0.92 at the 95% C.L.

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