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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.
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Massive stars exploding in a He-rich circumstellar medium. I. Type Ibn (SN 2006jc-like) events

(2008)

Authors:

A Pastorello, S Mattila, L Zampieri, M Della Valle, SJ Smartt, S Valenti, I Agnoletto, S Benetti, CR Benn, D Branch, E Cappellaro, M Dennefeld, JJ Eldridge, A Gal-Yam, A Harutyunyan, I Hunter, H Kjeldsen, Y Lipkin, PA Mazzali, P Milne, H Navasardyan, EO Ofek, E Pian, O Shemmer, S Spiro, RA Stathakis, S Taubenberger, M Turatto, H Yamaoka
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Massive stars exploding in a He-rich circumstellar medium. II. The transitional case of SN 2005la

(2008)

Authors:

A Pastorello, RM Quimby, SJ Smartt, S Mattila, H Navasardyan, RM Crockett, N Elias-Rosa, P Mondol, JC Wheeler, D Young
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Collider aspects of flavour physics at high Q

ArXiv 0801.1800 (2008)

Authors:

T Lari, L Pape, W Porod, JA Aguilar-Saavedra, F del Aguila, BC Allanach, J Alwall, Yu Andreev, D Aristizabal Sierra, A Bartl, M Beccaria, S Bejar, L Benucci, S Bityukov, I Borjanovic, G Bozzi, G Burdman, J Carvalho, N Castro, B Clerbaux, F de Campos, A de Gouvea, C Dennis, A Djouadi, OJP Eboli, U Ellwanger, D Fassouliotis, PM Ferreira, R Frederix, B Fuks, J-M Gerard, A Giammanco, S Gopalakrishna, T Goto, B Grzadkowski, J Guasch, T Hahn, S Heinemeyer, A Hektor, M Herquet, B Herrmann, K Hidaka, MK Hirsch, K Hohenwarter-Sodek, W Hollik, GWS Hou, T Hurth, A Ibarra, J Illana, M Kadastik, S Kalinin, C Karafasoulis, M Karagoz Unel, T Kernreiter, MM Kirsanov, M Klasen, E Kou, C Kourkoumelis, S Kraml, N Krasnikov, F Krauss, A Kyriakis, V Lemaitre, G Macorini, MB Magro, W Majerotto, F Maltoni, R Mehdiyev, M Misiak, F Moortgat, G Moreau, M Mühlleitner, M Muntel, A Onofre, E Ozcan, F Palla, L Panizzi, L Pape, S Penaranda, R Pittau, G Polesello, A Pukhov, M Raidal, AR Raklev, L Rebane, FM Renard, D Restrepo, Z Roupas, R Santos, S Schumann, G Servant, F Siegert, P Skands, P Slavich, J Sola, M Spira, S Sultansoy, A Toropin, A Tricomi, J Tseng, G Unel, JWF Valle, F Veloso, A Ventura, G Vermisoglou, C Verzegnassi, A Villanova del Moral, G Weiglein, M Yilmaz

Abstract:

This review presents flavour related issues in the production and decays of heavy states at LHC, both from the experimental side and from the theoretical side. We review top quark physics and discuss flavour aspects of several extensions of the Standard Model, such as supersymmetry, little Higgs model or models with extra dimensions. This includes discovery aspects as well as measurement of several properties of these heavy states. We also present public available computational tools related to this topic.
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The Birth Place of the Type Ic Supernova 2007gr

The Astrophysical Journal American Astronomical Society 672:2 (2008) l99-l102

Authors:

R Mark Crockett, Justyn R Maund, Stephen J Smartt, Seppo Mattila, Andrea Pastorello, Jonathan Smoker, Andrew W Stephens, Johan Fynbo, John J Eldridge, I John Danziger, Christopher R Benn
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