Mu3e

Research group

Research theme

Sub department

About

Related research groups

First observation of the decay Bs0→Ds-Ds+ and measurement of its branching ratio

Physical Review Letters 100:2 (2008)

Authors:

T Aaltonen, J Adelman, T Akimoto, MG Albrow, B Álvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, M Aoki, G Apollinari, A Apresyan, T Arisawa, A Artikov, W Ashmanskas, A Attal, A Aurisano, F Azfar, P Azzi-Bacchetta, P Azzurri, N Bacchetta, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, V Bartsch, G Bauer, PH Beauchemin, F Bedeschi, P Bednar, S Behari, G Bellettini, J Bellinger, A Belloni, D Benjamin, A Beretvas, J Beringer, T Berry, A Bhatti, M Binkley, D Bisello, I Bizjak, RE Blair, C Blocker, B Blumenfeld, A Bocci, A Bodek, V Boisvert, G Bolla, A Bolshov, D Bortoletto, J Boudreau, A Boveia, B Brau, A Bridgeman, L Brigliadori, C Bromberg, E Brubaker, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, KL Byrum, S Cabrera, M Campanelli, M Campbell, F Canelli, A Canepa, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, M Cavalli-Sforza, A Cerri, L Cerrito, SH Chang, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, G Choudalakis, SH Chuang, K Chung, WH Chung, YS Chung, CI Ciobanu

Abstract:

We report the observation of the exclusive decay Bs0→Ds-Ds+ at the 7.5 standard deviation level using 355pb-1 of data collected by the CDF II detector in pp̄ collisions at s=1.96TeV at the Fermilab Tevatron. We measure the relative branching ratio B(Bs0→Ds-Ds+)/B(B0→D-Ds+)=1.44-0.44+0.48. Using the world average value for B(B0→D-Ds+), we find B(Bs0→Ds-Ds+)= (9.4-4.2+4.4)×10-3. This provides a lower bound ΔΓsCP/Γs 2B(Bs0→Ds-Ds+)>1.2×10-2 at 95% C.L. © 2008 The American Physical Society.
More details from the publisher

Search for New Heavy Particles Decaying to Z^0 Z^0 -> eeee in p-pbar Collisions at sqrt(s) = 1.96 TeV

ArXiv 0801.1129 (2008)

Authors:

CDF Collaboration, A Aaltonen
Details from ArXiV

Particle physics: A win-win situation

Nature Physics 4:6 (2008) 438-440
More details from the publisher
More details

The CMS experiment at the CERN LHC

Journal of Instrumentation 3:8 (2008)

Authors:

S Chatrchyan, G Hmayakyan, V Khachatryan, AM Sirunyan, W Adam, T Bauer, T Bergauer, H Bergauer, M Dragicevic, J Erö, M Friedl, R Frühwirth, VM Ghete, P Glaser, C Hartl, N Hoermann, J Hrubec, S Hänsel, M Jeitler, K Kastner, M Krammer, I Magrans de Abril, M Markytan, I Mikulec, B Neuherz, T Nöbauer, M Oberegger, M Padrta, M Pernicka, P Porth, H Rohringer, S Schmid, T Schreiner, R Stark, H Steininger, J Strauss, A Taurok, D Uhl, W Waltenberger, G Walzel, E Widl, CE Wulz, V Petrov, V Prosolovich, V Chekhovsky, O Dvornikov, I Emeliantchik, A Litomin, V Makarenko, I Marfin, V Mossolov, N Shumeiko, A Solin, R Stefanovitch, J Suarez Gonzalez, A Tikhonov, A Fedorov, M Korzhik, O Missevitch, R Zuyeuski, W Beaumont, M Cardaci, E De Langhe, EA De Wolf, E Delmeire, S Ochesanu, M Tasevsky, PV Mechelen, J D’hondt, S De Weirdt, O Devroede, R Goorens, S Hannaert, J Heyninck, J Maes, MU Mozer, S Tavernier, W Van Doninck, L Van Lancker, P Van Mulders, I Villella, C Wastiels, C Yu, O Bouhali, O Charaf, B Clerbaux, P De Harenne, G De Lentdecker, JP Dewulf, S Elgammal, R Gindroz, GH Hammad, T Mahmoud, L Neukermans, M Pins, R Pins, S Rugovac, J Stefanescu, V Sundararajan, C Vander Velde

Abstract:

The Compact Muon Solenoid (CMS) detector is described. The detector operates at the Large Hadron Collider (LHC) at CERN. It was conceived to study proton-proton (and lead-lead) collisions at a centre-of-mass energy of 14 TeV (5.5 TeV nucleon-nucleon) and at luminosities up to 1034cm -2s-1 (1027cm-2s-1). At the core of the CMS detector sits a high-magnetic-field and large-bore superconducting solenoid surrounding an all-silicon pixel and strip tracker, a lead-tungstate scintillating-crystals electromagnetic calorimeter, and a brass-scintillator sampling hadron calorimeter. The iron yoke of the flux-return is instrumented with four stations of muon detectors covering most of the 4π solid angle. Forward sampling calorimeters extend the pseudo-rapidity coverage to high values (|n | ≤ 5) assuring very good hermeticity. The overall dimensions of the CMS detector are a length of 21.6 m, a diameter of 14.6 m and a total weight of 12500t. © 2008 IOP Publishing Ltd and SISSA.
More details from the publisher

Absolute branching fractions of Cabibbo-suppressed D → K(K)over-bar decays

PHYSICAL REVIEW D 77:9 (2008) ARTN 091106

Authors:

G Bonvicini, D Cinabro, M Dubrovin, A Lincoln, J Rademacker, DM Asner, KW Edwards, P Naik, J Reed, RA Briere, T Ferguson, G Tatishvili, H Vogel, ME Watkins, JL Rosner, JP Alexander, DG Cassel, JE Duboscq, R Ehrlich, L Fields, L Gibbons, R Gray, SW Gray, DL Hartill, BK Heltsley, D Hertz, CD Jones, J Kandaswamy, DL Kreinick, VE Kuznetsov, H Mahlke-Kruger, D Mohapatra, H Miyake, PUE Onyisi, JR Patterson, D Peterson, D Riley, A Ryd, AJ Sadoff, X Shi, S Stroiney, WM Sun, T Wilksen, SB Athar, R Patel, J Yelton, P Rubin, BI Eisenstein, I Karliner, S Mehrabyan, N Lowrey, M Selen, EJ White, J Wiss, RE Mitchell, MR Shepherd, D Besson, TK Pedlar, D Cronin-Hennessy, KY Gao, J Hietala, Y Kubota, T Klein, BW Lang, R Poling, AW Scott, P Zweber, S Dobbs, Z Metreveli, KK Seth, A Tomaradze, J Libby, A Powell, G Wilkinson, KM Ecklund, W Love, V Savinov, A Lopez, H Mendez, J Ramirez, JY Ge, DH Miller, IPJ Shipsey, B Xin, GS Adams, M Anderson, JP Cummings, I Danko, D Hu, B Moziak, J Napolitano, Q He, J Insler, H Muramatsu, CS Park, EH Thorndike, F Yang, M Artuso, S Blusk, S Khalil, J Li, R Mountain, S Nisar, K Randrianarivony, N Sultana, T Skwarnicki, S Stone, JC Wang, LM Zhang
More details from the publisher