Lorena Pesantez

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Power7 implements several new adaptive power management techniques which, in concert with the EnergyScale firmware, let it proactively exploit variations in workload, environmental conditions, and overall system use to meet customer-directed power and performance goals. These innovative features include per-core frequency scaling with available autonomic(More)
We present a measurement of angular observables and a test of lepton flavor universality in the B→K^{*}ℓ^{+}ℓ^{-} decay, where ℓ is either e or μ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711  fb^{-1} containing 772×10^{6} BB[over ¯] pairs, collected at the ϒ(4S) resonance with the Belle detector at the(More)
C. Oswald, P. Urquijo, J. Dingfelder, A. Abdesselam, I. Adachi, 11 H. Aihara, S. Al Said, 27 D. M. Asner, T. Aushev, 22 R. Ayad, V. Babu, I. Badhrees, 26 A. M. Bakich, V. Bhardwaj, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, 23 T. E. Browder, D. Červenkov, M.-C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D.(More)
We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(4S)(More)
We report the measurement of the direct CP asymmetry in the radiative B̄ → Xs+dγ decay using a data sample of (772 ± 11) × 10 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy ee collider. The CP asymmetry is measured as a function of the photon energy threshold. For E∗ γ ≥ 2.1 GeV, where E ∗ γ is the photon(More)
We report the measurement of the direct CP asymmetry in the radiative B¯→X(s+dγ) decay using a data sample of (772 ± 11)×10(6) BB[over ¯] pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP asymmetry is measured as a function of the photon energy threshold. For Eγ*≥2.1  GeV, where Eγ* is the(More)
The dark photon A^{'} and the dark Higgs boson h^{'} are hypothetical constituents featured in a number of recently proposed dark sector models. Assuming prompt decays of both dark particles, we search for their production in the so-called Higgstrahlung channel e^{+}e^{-}→A^{'}h^{'}, with h^{'}→A^{'}A^{'}. We investigate ten exclusive final states with(More)
......Managing the power and performance trade-off of a running computer system is complex. Power7 has many low-level knobs for power management, but these also affect performance, depending on the type and combination of workloads being processed at a given time. Because there’s no ‘‘one size fits all’’ policy, IBM’s EnergyScale approach employs an(More)