6,344 research outputs found

    Distinction between asymptomatic monoclonal B-cell lymphocytosis with cyclin D1 overexpression and mantle cell lymphoma: from molecular profiling to flow cytometry.

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    Espinet, B., Ferrer, A., Bellosillo, B., Nonell, L., Salar, A., Fernandez-Rodriguez, C., Puigdecanet, E., Gimeno, J., Garcia-Garcia, M., Carmen Vela, M., Luno, E., Collado, R., Navarro, J.T., De La Banda, E., Abrisqueta, P., Arenillas, L., Serrano, C., Lloreta, J., Minana, B., Cerutti, A., Florensa, L., Orfao, A., Sanz, F., Sole, F., Dominguez-Sola, D., Serrano, S

    Measurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ

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    The ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd), where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5. The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%. Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations

    Título: Da creaçao et composiçao do homem

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    Copia digital : Google BooksMención de edición precede a "e hum prologo em que conta a vida do author"Sign.: [calderón]\p4\s, 2[calderón]\p8\s, a-e\p8\s, 2a-2e\p8\s, 2f\p2\s, [ ]\p1\s, A\p7\s, B-D\p8\s, E\p4\sPortada con escudo xilográficoCada una de las dos comedias con portada propia, Em Lisboa: Impressa com todas as licenças necessarias por Vicente Aluarez, 1615Los cantos "Da creaçao et composiçao do homem" con portada propia, Em Lisboa: por Pedro Crasbeeck, 1615Port. con esc. xilCada una de las dos comedias con port. propia, Em Lisboa: Impressa com todas as licenças necessarias por Vicente Aluarez, 1615Los cantos "Da creaçao et composiçao do homem" con port. propia, Em Lisboa: por Pedro Crasbeeck, 1615Contiene con portada y paginación propias: Comedia does enfatrioens ; Comedia de Filodemo ; Los cantos "Da creaçao et composiçao do home

    Morphology of radio relics-I. What causes the substructure of synchrotron emission?

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    High-resolution radio observations of cluster radio relics often show complex spatial and spectral features. However, it is not clear what these features reveal about the underlying magnetic field properties. We performed three-dimensional magnetohydrodynamical simulations of merger shock waves propagating through a magnetized, turbulent intracluster medium. Our model includes the diffusive shock acceleration (DSA) of cosmic ray electrons, their spatial advection and energy losses at run-Time. With this set-up we can investigate the relation between radio substructure and pre-shock plasma conditions in the host cluster. We find that upstream turbulence plays a major role in shaping the properties of radio relics produced downstream. Within the assumption of DSA, we can reproduce the observed discrepancy between the X-ray derived Mach number of shocks, and the Mach number inferred from radio spectra. Our simulated spectral index maps and profiles across the radio relic also suggest that the standard deviation of the upstream magnetic field must be relatively small (sigmaBle1,musigma Ble 1 , muG) in order to reproduce observations and therefore radio relics can potentially constrain the distribution of magnetic fields in galaxy clusters outskirts

    Measurement of the CKM angle gamma from a combination of B->Dh analyses

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    A combination of three LHCb measurements of the CKM angle gamma is presented. The decays B->DK and B->Dpi are used, where D denotes an admixture of D0 and D0-bar mesons, decaying into K+K-, pi+pi-, K+-pi-+, K+-pi-+pi+-pi-+, KSpi+pi-, or KSK+K- final states. All measurements use a dataset corresponding to 1.0 fb-1 of integrated luminosity. Combining results from B->DK decays alone a best-fit value of gamma = 72.0 deg is found, and confidence intervals are set gamma in [56.4,86.7] deg at 68% CL, gamma in [42.6,99.6] deg at 95% CL. The best-fit value of gamma found from a combination of results from B->Dpi decays alone, is gamma = 18.9 deg, and the confidence intervals gamma in [7.4,99.2] deg or [167.9,176.4] deg at 68% CL, are set, without constraint at 95% CL. The combination of results from B->DK and B->Dpi decays gives a best-fit value of gamma = 72.6 deg and the confidence intervals gamma in [55.4,82.3] deg at 68% CL, gamma in [40.2,92.7] deg at 95% CL are set. All values are expressed modulo 180 deg, and are obtained taking into account the effect of D0-D0bar mixing

    Measurement of the Xi(-)(b) and Omega(-)(b) baryon lifetimes

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    Using a data sample of pp collisions corresponding to an integrated luminosity of 3 fb−1, the Ξ−b and Ω−b baryons are reconstructed in the Ξ−b → J/ψΞ− and Ω−b → J/ψΩ− decay modes and their lifetimes measured to be τ(Ξ−b) = 1.55+0.10−0.09 (stat) ± 0.03 (syst) ps, τ(Ω−b) = 1.54+0.26−0.21 (stat) ± 0.05 (syst) ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions
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