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Measurement of W-photon couplings in p- p collisions at s=1.8 TeV

Physical Review Letters 74:11 (1995) 1936-1940

Authors:

F Abe, MG Albrow, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P De Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Bartalini, 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, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, 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, Y Cen, F Cervelli, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, D Crane, JD Cunningham, T Daniels, F Dejongh, S Delchamps, S Dell'Agnello, M Dell'Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely, E Engels, S Eno, D Errede, S Errede, Q Fan, B Farhat, I Fiori

Abstract:

We report on a study of W + photon production in approximately 20 pb-1 of p-p collisions at s=1.8 TeV recorded with the Collider Detector at Fermilab. Our results are in good agreement with standard model expectations and are used to obtain limits on anomalous CP-conserving WW couplings of -2.3<<2.2 for =0 and -0.7<<0.7 for =0 at 95% C.L. We obtain the same limits for CP-violating couplings. These results provide limits on the higher-order electromagnetic moments of the W boson of 0.8
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Measurement of the B meson differential cross section dσ/dpT in pp̄ collisions at s = 1.8 TeV

Physical Review Letters 75:8 (1995) 1451-1455

Authors:

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P De Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Bartalini, 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, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, C Bromberg, 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, Y Cen, F Cervelli, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S Dell'Agnello, M Dell'Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, JR Dittmann, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely

Abstract:

This paper presents the first direct measurement of the B meson differential cross section dσ/dpT in pp̄ collisions at s=1.8 TeV using a sample of 19.3±0.7 pb-1 accumulated by the Collider Detector at Fermilab. The cross section is measured in the central rapidity region |y|<1 for pTB>6.0 GeV /c by fully reconstructing the B meson decays B+→J/ψK+ and B0→J/ψK*0892, where J/ψ→μ+μ- and K*0→K+π-. A comparison is made to the theoretical QCD prediction calculated at next-to-leading order. © 1995 The American Physical Society.
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Measurement of the Bs meson lifetime

Physical Review Letters 74:25 (1995) 4988-4992

Authors:

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P De Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Bartalini, 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, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, C Bromberg, 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, Y Cen, F Cervelli, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S Dell'Agnello, M Dell'Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, JR Dittmann, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely, E Engels

Abstract:

The lifetime of the Bs meson is measured using the semileptonic decay Bs→Ds-+νX. The data sample consists of 19.3 pb-1 of pp̄ collisions at s=1.8 TeV collected by the Collider Detector at Fermilab during 1992-1993. There are 76±8 +Ds- signal events where the Ds is identified via the decay Ds-→φπ-, φ→K+K-. Using these events, the Bs meson lifetime is determined to be τs=1.42-0.23+0.27(stat)±0.11(syst) ps. A measurement of the Bs lifetime in a low statistics sample of exclusive Bs→J/ψ φ decays is also presented in this paper. © 1995 The American Physical Society.
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Measurement of the W boson mass

Physical Review Letters 75:1 (1995) 11-16

Authors:

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, M Atac, P Auchincloss, F Azfar, P Azzi, N Bacchetta, W Badgett, MW Bailey, J Bao, P De Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Bartalini, 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, S Bertolucci, A Bhatti, K Biery, M Binkley, F Bird, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, C Bromberg, 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, Y Cen, F Cervelli, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, JD Cunningham, T Daniels, F DeJongh, S Delchamps, S Dell'Agnello, M Dell'Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson, JR Dittmann, S Donati, RB Drucker, A Dunn, K Einsweiler, JE Elias, R Ely

Abstract:

We present a measurement of the mass of the W boson using data collected with the Collider Detector at Fermilab during the 1992-93 collider run at the Fermilab Tevatron. A fit to the transverse mass spectrum of a sample of 3268 W→μν events recorded in an integrated luminosity of 19.7 pb-1 gives a mass MWμ=80.310±0.205(stat)±0.130(syst) GeV/c2. A fit to 5718 W→eν events recorded in 18.2 pb-1 gives MWe=80.490±0.145(stat) ±0.175syst GeV/c2. Combining these results, accounting for correlated uncertainties, yields MW=80.410±0.180 GeV/c2. © 1995 The American Physical Society.
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Observation of top quark production in p̄p collisions with the collider detector at fermilab

Physical Review Letters 74:14 (1995) 2626-2631

Authors:

F Abe, H Akimoto, A Akopian, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, S Aota, G Apollinari, T Asakawa, W Ashmanskas, M Atac, P Auchincloss, 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, P Bartalini, 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, S Bertolucci, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, D Bortoletto, J Boudreau, G Brandenburg, L Breccia, C Bromberg, 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, G Cauz, Y Cen, F Cervelli, HY Chao, J Chapman, MT Cheng, G Chiarelli, T Chikamatsu, CN Chiou, L Christofek, S Cihangir, AG Clark, M Cobal, M Contreras, J Conway, J Cooper, M Cordelli, C Couyoumtzelis, D Crane, D Cronin-Hennessy, R Culbertson, JD Cunningham, T Daniels, F Dejongh, S Delchamps, S Dell'Agnello, M Dell'Orso, L Demortier, B Denby, M Deninno, PF Derwent, T Devlin, M Dickson

Abstract:

We establish the existence of the top quark using a 67 pb-1 data sample of p̄p collisions at s=1.8 TeV collected with the Collider Detector at Fermilab (CDF). Employing techniques similar to those we previously published, we observe a signal consistent with tt̄ decay to WWbb̄, but inconsistent with the background prediction by 4.8σ. Additional evidence for the top quark is provided by a peak in the reconstructed mass distribution. We measure the top quark mass to be 176±8(stat)±10(syst) GeV/c2, and the tt̄ production cross section to be 6.8-2.4+3.6 pb. © 1995 The American Physical Society.
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