Professor Todd Huffman: Publications

The SVX II silicon vertex detector upgrade at CDF

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 383:1 (1996) 13-20

Authors:

J Antos, H-Y Chao, P Chang, M-T Cheng, M-L Chu, R-S Guo, C-L Ho, P-K Teng, M-J Wang, S-C Wu, G-P Yeh, P Yeh, J Andressen, E Barsotti, M Bowden, S Cihangir, H Gonzalez, C Grimm, B Haynes, M Hrycyk, J Howell, D Husby, W Knopf, M Lindenmeyer, P Ratzmann, J Sarge, J Spalding, L Spiegel, S Tkaczyk, K Woodbury, R Yarema, S Zimmerman, T Zimmerman, C Gay, J Huth, J Oliver, M Spiropulu, R Stroehmer, Y Iwata, T Ohmoto, T Ohsugi, B Barnett, J Skarha, R Snider, R Takashima, R Ely, M Garcia-Sciveres, C Haber, O Milgrome, L Lu, M Bailey, N Bruner, M Gold, M Hoeferkamp, J Matthews, E Moore, S Seidel, T Thomas, S Worm, L Yu, T Kohriki, Y Unno, N Tamura, N Bacchetta, D Bisello, G Bolla, J Boudreau, E Engels, BT Huffman, PF Shepard, R Rosatti, F Bedeschi, A Menzione, G Punzi, L Ristori, F Zetti, D Bortoletto, A Garfinkel, A Hardmann, K Hoffman, T Keaffaber, NM Shaw, J Cassada, P Tipton, J Conway, J Done, T Kamon, B Tannenbaum, J Wolinski, D Benjamin, M Frautschi, A Sill, J-F Hou

Measurement of the lifetime of the B0smeson using the exclusive decay mode B0s→J/ψφ

Physical Review Letters 77:10 (1996) 1945-1949

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, 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, 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, A Bhatti, K Biery, M Binkley, D Bisello, RE Blair, C Blocker, A Bodek, W Bokhari, V Bolognesi, 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, 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, R Demina, L Demortier, B Denby, M Deninno

Abstract:

The lifetime of the B⁰smeson using the exclusive decay mode B⁰s→J/ψφ where J/ψ→μ⁺μ⁻ and φ→K⁺K⁻ The data sample consists of 110 pb⁻¹ of pp collisions at s=1.8 TeV, collected by the CDF detector at the Fermilab Tevatron collider during 1992–1995. We find 58±12 signal events, and the B⁰s meson lifetime is determined to be TB⁰s=1.34^+0.23−0.19(��ٲ��)±0.05(syst)ps. This result is consistent with previous measurements of theB⁰s, B⁺and B⁰dmeson lifetimes and with theoretical predictions. © 1996 American Physical Society.

Test stand for the Silicon Vertex Detector of the Collider Detector Facility

IEEE Transactions on Nuclear Science Institute of Electrical and Electronics Engineers (IEEE) 43:3 (1996) 1170-1174

Authors:

S Zimmermann, J Anderson, J Andresen, E Barsotti, J Chramowicz, G Duerling, M Gao, H Gonzalez, B Haynes, W Knopf, K Treptow, D Walsh, T Zmuda, T Huffman, P Shepard, C Gay, S Harder, H Hill, J Huth, J O'Kane, J Oliver, H Robins, M Spiropulu, R Strohmer, M Gold, T Thomas

Measurement of the branching fraction B(B+u→J/ψπ+) and Search for B+c→J/ψπ+

Physical Review Letters 77:26 (1996) 5176-5181

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, 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, 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 Bondreau, 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 De Jongh, S Delchamps, S Dell’agnello, M Dell’orso, R Demina, L Demortier

Abstract:

We report on a measurement of the branching fraction of the Cabibbo-suppressed decay B⁺u→J/ψπ⁺, where J/ψJ/ψμ⁺μ^-. The data were collected by the Collider Detector at Fermilab during 1992–1995 and correspond to an integrated luminosity of 110pb^-1 in pp collisions at √s=1.8TeV. A signal of 28⁺¹⁰-9 events is observed and we determine the ratio of branching fractions B(B⁺u→J/ψπ⁺)/B(B⁺u→J/ψ��⁺) to be [5.0^+1.9^-1.7(stat)±0.1(syst)]%. Using the world average value for B(B⁺u→J/ψπ⁺), we calculate the branching fraction B(B⁺u→J/ψπ⁺) to be (5.0^+2.1^-1.9)×10^-5. We also search for the decay B⁺c→J/ψπ⁺ and report a 95% confidence level limit on σ(B⁺c)B⁺c→J/ψπ⁺/σ(��⁺u)B(B⁺u→J/ψ��⁺) as a function of the B+c lifetime. © 1996 The American Physical Society.

Reconstruction of B⁰→J/Ψ��S⁰ and Measurement of Ratios of Branching Ratios Involving B→J/Ψ��* and B⁺→J/Ψ��⁺

Physical Review Letters 76:12 (1996) 2015-2020

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 report on the reconstruction of the decay mode B0→J/Ψ��S0 using 19.3pb-1 of data collected by the Collider Detector at Fermilab in p-p collisions at √s=1.8TeV. A signal of 41.8±6.9 events, with a signal-to-background ratio of 9:1, is observed. Three additional decay modes B+→J/Ψ��+, B0→J/Ψ��*(892)0, and B+→J/Ψ��*(892)+ are reconstructed. We measure three ratios of branching ratios, each one relative to the B+→J/Ψ��+ mode. We also report the ratio of decay rates, γ(B→J/Ψ��*)/γ(B→J/Ψ��), for the vector-vector relative to the vector-pseudoscalar modes, to be 1.32±0.23(stat)±0.16(syst). © 1996 The American Physical Society.

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