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A Measurement of the Michel Parameters in Leptonic Decays of the Tau

Physical Review Letters 78:25 (1997) 4686-4690

Authors:

R Ammar, P Baringer, A Bean, D Besson, D Coppage, C Darling, R Davis, N Hancock, S Kotov, I Kravchenko, N Kwak, S Anderson, Y Kubota, M Lattery, JJ O鈥橬eill, S Patton, R Poling, T Riehle, V Savinov, A Smith, MS Alam, SB Athar, Z Ling, AH Mahmood, H Severini, S Timm, F Wappler, A Anastassov, S Blinov, JE Duboscq, D Fujino, R Fulton, KK Gan, T Hart, K Honscheid, H Kagan, R Kass, J Lee, MB Spencer, M Sung, A Undrus, R Wanke, A Wolf, MM Zoeller, B Nemati, SJ Richichi, WR Ross, P Skubic, M Wood, M Bishai, J Fast, E Gerndt, JW Hinson, N Menon, DH Miller, EI Shibata, IPJ Shipsey, M Yurko, L Gibbons, SD Johnson, Y Kwon, S Roberts, EH Thorndike, CP Jessop, K Lingel, H Marsiske, ML Perl, SF Schaffner, D Ugolini, R Wang, X Zhou, TE Coan, V Fadeyev, I Korolkov, Y Maravin, I Narsky, V Shelkov, J Staeck, R Stroynowski, I Volobouev, J Ye, M Artuso, A Efimov, F Frasconi, M Gao, M Goldberg, D He, S Kopp, GC Moneti, R Mountain, Y Mukhin, S Schuh, T Skwarnicki, S Stone, G Viehhauser, X Xing, J Bartelt, SE Csorna, V Jain, S Marka

Abstract:

We have measured the spectral shape Michel parameters 蟻 and 畏 using leptonic decays of the 蟿, recorded by the CLEO II detector. Assuming e - 渭 universality in the vectorlike couplings, we find 蟻别渭 = 0.735 卤 0.013 卤 0.008, where the first error is statistical and the second systematic. We also present measurements for the parameters for e and 渭 final states separately. 漏 1997 The American Physical Society.

The design and performance of the silicon detectors for CLEO III

IEEE Transactions on Nuclear Science Institute of Electrical and Electronics Engineers (IEEE) 44:3 (1997) 606-609

Authors:

CW Ward, PI Hopman, JP Alexander, AD Foland, PC Kim, K Arndt, A Bean, C Bebek, R Boyd, G Brandenburg, J Cherwinka, C Darling, J Duboscq, J Fast, K Gan, Y Gao, H Kagan, R Kass, N Menon, D Miller, B Nemati, J Oliver, C Rush, I Shipsey, P Skubic, M Spencer, M Yurko, M Zoeller

The mu tau and e tau Decays of Top Quark Pairs Produced in p pbar Collisions at sqrt(s) = 1.8 TeV

ArXiv hep-ex/9704007 (1997)

Observation of diffractive W-boson production at the fermilab tevatron

Physical Review Letters 78:14 (1997) 2698-2703

Authors:

F Abe, H Akimoto, A Akopian, MG Albrow, SR Amendolia, D Amidei, J Antos, S Aota, G Apollinari, T Asakawa, W Ashmanskas, M Atac, F Azfar, P Azzi-Bacchetta, N Bacchetta, W Badgett, S Bagdasarov, MW Bailey, J Bao, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, M Barone, E Barzi, G Bauer, T Baumann, F Bedeschi, S Behrends, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Benlloch, J Bensinger, D Benton, A Beretvas, JP Berge, J Berryhill, S Bertolucci, B Bevensee, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, G Bolla, D Bortoletto, J Boudreau, L Breccia, C Bromberg, N Bruner, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, J Cammerata, C Campagnari, M Campbell, A Caner, W Carithers, D Carlsmith, A Castro, D Cauz, Y Cen, F Cervelli, PS Chang, PT Chang, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, E Cocca, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, D Cronin-Hennessy, R Culbertson, T Daniels, F Dejongh, S Delchamps, S Dell鈥檃gnello, M Dell鈥檕rso, R Demina, L Demortier

Abstract:

We report the first observation of diffractively produced W bosons.In a sample of W 鈫 e谓 events produced in pp collisions at 鈭歴=1.8TeV, we find an excess of events with a forward rapidity gap, which is attributed to diffraction.The probability that this excess is consistent with nondiffractive production is 1.1脳10鈭4 (3.8蟽).The relatively low fraction of W+ jet events observed within this excess implies that mainly quarks from the Pomeron, which mediates diffraction, participate in W production.The diffractive to nondiffractive W production ratio is found to be RW=(1.15卤0.55)%.漏 1997 The American Physical Society.

Search For Charged Higgs Decays of the Top Quark Using Hadronic Decays of the Tau Lepton

ArXiv hep-ex/9704003 (1997)