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Search for lepton-flavor-violating decays of B mesons

Physical Review D - Particles, Fields, Gravitation and Cosmology 65:11 (2002) 1111021-1111024

Authors:

KW Edwards, R Ammar, D Besson, X Zhao, S Anderson, VV Frolov, Y Kubota, SJ Lee, SZ Li, R Poling, A Smith, CJ Stepaniak, J Urheim, Z Metreveli, KK Seth, A Tomaradze, P Zweber, S Ahmed, MS Alam, L Jian, M Saleem, F Wappler, E Eckhart, KK Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, TK Pedlar, JB Thayer, E von Toerne, T Wilksen, MM Zoeller, H Muramatsu, SJ Richichi, H Severini, P Skubic, SA Dytman, JA Mueller, S Nam, V Savinov, S Chen, JW Hinson, J Lee, DH Miller, V Pavlunin, EI Shibata, IPJ Shipsey, D Cronin-Hennessy, AL Lyon, CS Park, W Park, EH Thorndike, TE Coan, YS Gao, F Liu, Y Maravin, I Narsky, R Stroynowski, M Artuso, C Boulahouache, K Bukin, E Dambasuren, K Khroustalev, R Mountain, R Nandakumar, T Skwarnicki, S Stone, JC Wang, AH Mahmood, SE Csorna, I Danko, Z Xu, G Bonvicini, D Cinabro, M Dubrovin, S McGee, A Bornheim, E Lipeles, SP Pappas, A Shapiro, WM Sun, AJ Weinstein, G Masek, HP Paar, R Mahapatra, RA Briere, GP Chen, T Ferguson, G Tatishvili, H Vogel, NE Adam, JP Alexander, K Berkelman, F Blanc, V Boisvert, DG Cassel, PS Drell

Abstract:

We have searched a sample of 9.6 million BB̄ events for the lepton-flavor-violating decays B→he±μ±, B+→h-e-e+, B+→h-e+μ+, and B+→h-μ-μ+, where h is π, K, p, and K*(892), a total of sixteen modes. We find no evidence for these decays, and place 90% confidence level upper limits on their branching fractions that range from 1.0 to 8.3×10-6.

Search for the decay Bs→μ+μ-φ in pp̄ collisions at √s = 1.8 TeV

Physical Review D - Particles, Fields, Gravitation and Cosmology 65:11 (2002) 1111011-1111016

Authors:

D Acosta, T Affolder, H Akimoto, A Akopian, MG Albrow, P Amaral, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, A Artikov, T Asakawa, W Ashmanskas, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, S Bailey, P de Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Belforte, WH Bell, G Bellettini, J Bellinger, D Benjamin, J Bensinger, A Beretvas, JP Berge, J Berryhill, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, SR Blusk, A Bocci, A Bodek, W Bokhari, G Bolla, Y Bonushkin, D Bortoletto, J Boudreau, A Brandl, S van den Brink, C Bromberg, M Brozovic, E Brubaker, N Bruner, E Buckley-Geer, J Budagov, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, S Cabrera, P Calafiura, M Campbell, W Carithers, J Carlson, D Carlsmith, W Caskey, A Castro, D Cauz, A Cerri, AW Chan, PS Chang, PT Chang, J Chapman, C Chen, YC Chen, MT Cheng, M Chertok, G Chiarelli, I Chirikov-Zorin, G Chlachidze, F Chlebana, L Christofek, ML Chu, YS Chung, CI Ciobanu, AG Clark, AP Colijn, A Connolly, J Conway, M Cordelli, J Cranshaw, R Cropp, R Culbertson, D Dagenhart

Abstract:

We present a search for the flavor-changing neutral current decay Bs→μ+μ-φ in pp̄ collisions at √s = 1.8 TeV, using 91 pb-1 of data collected at the Collider Detector at Fermilab (CDF). We find two candidate events for this decay, which are consistent with the background estimate of one event, and set an upper limit on the branching fraction of B(Bs→ μ+μ-φ)<6.7×10-5 at a 95% confidence level. This is the first limit on the branching fraction of this decay.

Sensor development for the CMS pixel detector

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 485:1-2 (2002) 89-99

Authors:

G Bolla, D Bortoletto, R Horisberger, R Kaufmann, T Rohe, A Roy

Limits on Extra Dimensions and New Particle Production in the Exclusive Photon and Missing Energy Signature in p pbar Collisions at sqrt(s) = 1.8 TeV

ArXiv hep-ex/0205057 (2002)

CLEO-c and CESR-c: A New Frontier in Weak and Strong Interactions

AIP Conf.Proc. 618 (2002) 427-437

Abstract:

We report on the physics potential of a proposed conversion of the CESR machine and the CLEO detector to a charm and QCD factory: CLEO-c and CESR-c that will make crucial contributions to flavor physics in this decade and offers our best hope for mastering non-perturbative QCD which is essential if we are to understand strongly coupled sectors in the new physics that lies beyond the Standard Model.