Now showing items 1-3 of 3

    • Measurement of the Parity-Violating Asymmetry Parameter α_b and the Helicity Amplitudes for the Decay Λ_b^0 → J/ψΛ⁰ with the ATLAS Detector 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Izen, Joseph M.; Leyton, Michael; Lou, Xinchou; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (American Physical Society, 2014-05-27)
      A measurement of the parity-violating decay asymmetry parameter, α_b, and the helicity amplitudes for the decay Λ_b^0 → J/ψ(μ⁺μ⁻)Λ⁰(pπ⁻) is reported. The analysis is based on 1400 Λ_b^0 and Λ̅_b^0 baryons selected in 4.6 ...
    • Muon Reconstruction Efficiency and Momentum Resolution of the ATLAS Experiment in Proton−Proton Collisions at √s =7 TeV in 2010 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdelalim, A. A.; Abdinov, O.; Ahsan, Mahsana; Izen, Joseph M.; Leyton, Michael; Lou, Xinchou; Namasivayam, Harisankar; Reeves, Kendall; Wong, Wei-Cheng; ATLAS Collaboration (Springer New York LLC, 2014-09-16)
      This paper presents a study of the performance of the muon reconstruction in the analysis of proton−proton collisions at √s = 7 TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms ...
    • Study of B^{±,0} → J/ψK⁺K⁻K^{±,0} and search for B⁰ → J/ψϕ at BaBar 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2015-01-07)
      We study the rare B meson decays B^{±,0} → J/ψK⁺K⁻K^{±,0}, B^{±,0} → J/ψϕK^{±,0} and search for B⁰ → J/ψϕ, using 469 x 10⁶ BB̅ events collected at the ϒ(4S) resonance with the BABAR detector at the PEP-II e⁺e⁻ asymmetric ...