Roland Gillard

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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)
The parallelization of two applications in symmetric cryptography is considered: block ciphering and a new method based on random sampling for the selection of basic substitution boxes (S-box) with good algebraic properties. While both consists mainly in loops with independent computations and possibly early termination, they are subject to changing(More)
The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967  fb(-1) data sample collected by the Belle detector at or near the Υ(nS) (n = 1,2,…,5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of π+ π- J/ψ production around 4 GeV is observed. This feature can be(More)
K. Chilikin, R. Mizuk, I. Adachi, H. Aihara, K. Arinstein, D.M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A.M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, K. Cho, V. Chobanova, S.-K. Choi, Y. Choi, D. Cinabro, J.(More)
We measure the branching fraction of B- → τ- ν(τ) using the full Υ(4S) data sample containing 772×10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Events with BB pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B- → τ- ν(τ) candidates are detected in the recoil. We(More)
A method for the determination of PAHs in aqueous media based on synchronous fluorescence analysis directly on a solid phase after extraction was evaluated. Tests were conducted for (i) the simultaneous analysis of naphthalene, phenanthrene, anthracene, and pyrene in water at a parts per billion concentration level using a 0V1 sorbing phase block and (ii)(More)
We report the first observation of the decay Λ_{c}^{+}→pK^{+}π^{-} using a 980  fb^{-1} data sample collected by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. This is the first observation of a doubly Cabibbo-suppressed decay of a charmed baryon. We measure the branching ratio of this decay with respect to its Cabibbo-favored(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)
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)