Publications [#308723] of Mark C. Kruse

Papers Published
  1. Acosta, D; Affolder, T; Albrow, MG; Ambrose, D; Amidei, D; Anikeev, K; Antos, J; Apollinari, G; Arisawa, T; Artikov, A; Ashmanskas, W; Azfar, F; Azzi-Bacchetta, P; Bacchetta, N; Bachacou, H; Badgett, W; Barbaro-Galtieri, A; Barnes, VE; Barnett, BA; Baroiant, S; Barone, M; Bauer, G; Bedeschi, F; Behari, S; Belforte, S; Bell, WH; Bellettini, G; Bellinger, J; Benjamin, D; Beretvas, A; Bhatti, A; Binkley, M; Bisello, D; Bishai, M; Blair, RE; Blocker, C; Bloom, K; Blumenfeld, B; Bocci, A; Bodek, A; Bolla, G; Bolshov, A; Bortoletto, D; Boudreau, J; Bromberg, C; Brubaker, E; Budagov, J; Budd, HS; Burkett, K; Busetto, G; Byrum, KL; Cabrera, S; Campbell, M; Carithers, W; Carlsmith, D; Castro, A; Cauz, D; Cerri, A; Cerrito, L; Chapman, J; Chen, C; Chen, YC; Chertok, M; Chiarelli, G; Chlachidze, G; Chlebana, F; Chu, ML; Chung, JY; Chung, WH; Chung, YS; Ciobanu, CI; Clark, AG; Coca, M; Connolly, A; Convery, M; Conway, J; Cordelli, M; Cranshaw, J; Culbertson, R; Dagenhart, D; D'Auria, S; De Barbaro, P; De Cecco, S; Dell'Agnello, S; Dell'Orso, M; Demers, S; Demortier, L; Deninno, M; De Pedis, D; Derwent, PF; Dionisi, C; Dittmann, JR; Dominguez, A; Donati, S; D'Onofrio, M; Dorigo, T; Eddy, N; Erbacher, R; Errede, D; Errede, S, Measurement of the W boson polarization in top decay at CDF at √s = 1.8 TeV, Physical Review D, vol. 71 no. 3 (January, 2005), pp. 031101-1-031101-7 [doi] .

    Abstract:
    The polarization of the W boson in t →Wb decay is unambiguously predicted by the standard model of electroweak interactions and is a powerful test of our understanding of the tbW vertex. We measure this polarization from the invariant mass of the b quark from t → Wb and the lepton from W → lν whose momenta measure the W decay angle and direction of motion, respectively. In this paper we present a measurement of the decay rate (f V+A) of the W produced from the decay of the top quark in the hypothesis of V + A structure of the tWb vertex. We find no evidence for the nonstandard V + A vertex and set a limit on fV+A < 0.80 at 95% confidence level. By combining this result with a complementary observable in the same data, we assign a limit on fv+A < 0.61 at 95% CL. This corresponds to a constraint on the right-handed helicity component of the W polarization of f+ < 0.18 at 95% CL. This limit is the first significant direct constraint on fV+A in top decay. © 2005 The American Physical Society.