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Evidence for top quark production in p̄p collisions at s =1.8 TeV

Physical Review Letters 73:2 (1994) 225-231

Authors:

F Abe, MG Albrow, SR Amendolia, D Amidei, J Antos, C Anway-Wiese, G Apollinari, H Areti, P Auchincloss, M Austern, 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, V Bolognesi, D Bortoletto, C Boswell, T Boulos, G Brandenburg, E Buckley-Geer, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, 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, DP Coupal, 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 summarize a search for the top quark with the Collider Detector at Fermilab (CDF) in a sample of p̄p collisions at s =1.8 TeV with an integrated luminosity of 19.3 pb-1. We find 12 events consistent with either two W bosons, or a W boson and at least one b jet. The probability that the measured yield is consistent with the background is 0.26%. Though the statistics are too limited to establish firmly the existence of the top quark, a natural interpretation of the excess is that it is due to tt̄ production. Under this assumption, constrained fits to individual events yield a top quark mass of 174±10-12+13 GeV/c2. The tt̄ production cross section is measured to be 13.9-4.8+6.1 pb. © 1994 The American Physical Society.
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Precision measurement of the prompt photon cross section in pp̄ collisions at s=1.8 TeV

Physical Review Letters 73:20 (1994) 2662-2666

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 Gellettini, 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:

A prompt photon cross section measurement from the Collider Detector at Fermilab experiment is presented. Detector and trigger upgrades, as well as 6 times the integrated luminosity compared with our previous publication, have contributed to a much more precise measurement and extended PT range. As before, QCD calculations agree qualitatively with the measured cross section, but the data has a steeper slope than the calculations. © 1994 The American Physical Society.
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Search for the top quark decaying to a charged higgs boson in p̄p collisions at s=1.8 TeV

Physical Review Letters 73:20 (1994) 2667-2671

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, 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, B Flaugher

Abstract:

We present the results of a search in p̄p collisions at s=1.8 TeV for the top quark decaying to a charged Higgs boson (H±). We search for dilepton final states from the decay chain tt̄→HH (or HW, or WW) + bb̄→ll+X. In a sample of 19.3 pb-1 collected during 1992-93 with the Collider Detector at Fermilab, we observe 2 events with a background estimation of 3.0 ± 1.0 events. Limits at 95% C.L. in the (Mtop,MH±) plane are presented. For the case Mtop
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ELECTRICAL PERFORMANCE OF THE CDF SILICON VERTEX DETECTOR

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 342:1 (1994) 251-259

Authors:

D AMIDEI, P AZZI, N BACCHETTA, M BAILEY, B BARNETT, F BEDESCHI, D BISELLO, V BOLOGNESI, C BOSWELL, G BUSETTO, WC CARITHERS, H CARTER, A CASTRO, S DELLAGNELLO, PF DERWENT, R DUCAR, A DUNN, RP ELY, B FLAUGHER, S GALEOTTI, A BARBAROGALTIERI, AF GARFINKEL, C HABER, S HOLLAND, M HRYCYK, D HERRUP, R HUGHES, S KLEINFELDER, M LORETI, M MARIOTTI, J MATTHEWS, A MENZIONE, T MERRICK, C NELSON, L PESCARA, N PRODUIT, G PUNZI, F RAFFAELLI, L RISTORI, O SCHNEIDER, S SEGLER, MD SHAPIRO, NM SHAW, T SHAW, J SKARHA, FR SNIDER, TY SONG, A SPIES, F TARTARELLI, P TIPTON, S TKACZYK, J TSENG, N TURINI, K TURNER, S VEJCIK, G WATTS, TR WESSON, WC WESTER, H WENZEL, M WONG, W YAO, F ZETTI
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INFRARED IMAGING OF SPIRAL GALAXIES - COLORS AND LUMINOSITY PROFILES

ASTROPHYSICAL JOURNAL 432:2 (1994) 518-546

Authors:

DM TERNDRUP, RL DAVIES, JA FROGEL, DL DEPOY, LA WELLS
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