Publications by Farrukh Azfar


Search for Bs0→μ<sup>+</sup>μ<sup>-</sup>and B0→μ<sup>+</sup>μ<sup>-</sup>decays with the full CDF Run II data set

Physical Review D - Particles, Fields, Gravitation and Cosmology 87 (2013)

T Aaltonen, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, T Bae, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, M Bauce, F Bedeschi, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, KR Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, L Brigliadori, C Bromberg, E Brucken, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, P Butti, A Buzatu, A Calamba, S Camarda, M Campanelli, F Canelli, B Carls, D Carlsmith, R Carosi, S Carrillo, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, YC Chen, M Chertok, G Chiarelli, G Chlachidze, K Cho, D Chokheli, MA Ciocci, A Clark, C Clarke, ME Convery

We report on a search for Bs0→μ + μ - and B0→μ + μ - decays using proton-antiproton collision data at √s=1.96 TeV corresponding to 10 fb - 1 of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. The observed number of B0 candidates is consistent with background-only expectations and yields an upper limit on the branching fraction of B(B0→μ + μ - ) < 4.6×10 - 9 at 95% confidence level. We observe an excess of Bs0 candidates. The probability that the background processes alone could produce such an excess or larger is 0.94%. The probability that the combination of background and the expected standard model rate of Bs0→μ + μ - could produce such an excess or larger is 6.8%. These data are used to determine a branching fraction B(Bs0→μ + μ - )=(1.3-0.7+0.9) ×10 - 8 and provide an upper limit of B(Bs0→μ + μ - ) < 3.1×10 - 8 at 95% confidence level. © 2013 American Physical Society.


Show full publication list