105,582 research outputs found
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
No full textFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
Letter from Carl Hayden to M. J. Riordan
No full textLetter from Carl Hayden to M. J. Riordan expressing his support for Coconino County in turning over the Bright Angel Trail to the federal government
Mapa de reconhecimento da alta intensidade dos solos da Floresta Estadual de Antimari, Estado do Acre.
No full textParte de: RODRIGUES, T. E.; SILVA, J. M. L. da; GAMA, J. R. N. F.; CARDOSO JÚNIOR, E. Q. Caracterização e classificação dos solos da Floresta Estadual do Antimari, Estado do Acre. Belém, PA: Embrapa Amazônia Oriental, 2003. 78 p. il. (Embrapa Amazônia Oriental. Documentos, 152)
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
Special Focus on Advances in Symbolic and Numeric Computation IV
No full textThis Special Focus on Advances in Symbolic and Numeric Computation IV of Mathematics in Computer Science (MCS) edited by Amélia Loja, Mourad Bezzeghoud, Joaquim Infante Barbosa and José Alberto Rodrigues is organized in connection with the 5th International Conference on Numerical and Symbolic Computation: Developments and Applications, and it is devoted to publishing relevant results on the development and/or applications of numerical and symbolic computational methods in Mathematics, Applied Sciences and Engineering.
Original research papers and insightful survey manuscripts addressing all aspects of numerical and symbolic computation are welcome.
Topics and areas of interest for this special focus include, but are not limited to
- integrated numerical and/or symbolic computation,
- integrated graphical and/or analytical computation,
- image processing,
- symbolic computation and didactical tools,
- modeling and optimization,
- systems identification and control,
- evolutionary algorithms,
- computational intelligence,
- fuzzy systems,
- computational mathematics,
- computational engineering,
- computational physics and chemistry,
- computational economics, management and planning,
- health and biomedical computing applications,
- design and implementation of algorithms and software tools.SYMCOMP202
Mosses from the Mascarenes - 7 : a small collection from Rodrigues
No full textFifteen taxa of mosses are reported from the island of Rodrigues. The second African report of Luisierella barbula (Schwaegr.) Steere bridges the Asian and New World disjunctions of this taxon. Three other species are reported new to the Mascarenes, i.e., Calymperes tenerum C.Müller var. tenerum, Fissidens ramulosus Mitten and Weissia edentula Mitten. Three are new to Rodrigues, i.e., Bryum truncorum Bridel, Fissidens sciophyllus Mitten and Vesicularia ayresii (Schimper ex Besch.) Broth
Measurement of the CP-violating phase \phi s in Bs->J/\psi\pi+\pi- decays
No full textMeasurement of the mixing-induced CP-violating phase phi_s in Bs decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd final state J/\psi pi+ pi- are selected in 1/fb of pp collision data collected at sqrt{s} = 7 TeV with the LHCb detector. A time-dependent fit to the data yields a value of phi_s=-0.019^{+0.173+0.004}_{-0.174-0.003} rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found
Letter from M. J. Riordan, Arizona Lumber and Timber Company, to Carl Hayden
No full textLetter from M. J. Riordan to Carl Hayden expressing his opposition to the federal government's takeover of Bright Angel Trail
Oiovelia viannai Rodrigues & Melo
No full textOiovelia viannai Rodrigues & Melo in Rodrigues et al., 2014 (Figures 11, 16– 17) Material examined. BRAZIL, Minas Gerais State: apterous male, holotype, Luz, Ribeirão Jorge Grande, 19 º 40 ’ 13 ”S / 45 º 36 ’ 37 ”W, 27.IV. 2010, H.D.D. Rodrigues leg. Paratypes: 1 macropterous male, 2 apterous females, same data as holotype, except 06.I. 2010; 2 apterous males, 1 macropterous female, same data as holotype, except 13.III. 2010, H.D.D. Rodrigues & G.J.C. Vianna leg. Bahia State: 1 apterous female, Andaraí, Chapada Diamantina, # 28, Cachoeira do Rio Roncador, Marimbus, 12 ° 41 ’ 57.6 ”S / 41 ° 21 ’ 26.1 ”W, 323 m a.s.l., N. Hamada, J.M.C. Nascimento & J. O. Silva leg. All in MZUSP. Remarks. It is common to find more than one species of Oiovelia in the same foam mass and O. cunucunumana (Fig. 15) occurred together with O. viannai (Figs 16–17) in the State of Minas Gerais, at a brown water stream without formation of foam (Rodrigues et al. 2014). The same two species were found co-occurring in foam mass from a dark water stream in the State of Bahia, which represents the first record of the genus from Northeastern Brazil. Oiovelia cunucunumana is the species with the largest range within the genus, with records from Venezuela to Argentina. Oiovelia viannai is a recently described species, and until now was known only from the type locality in the State of Minas Gerais, Southeastern Brazil. The occurrence of specimens of Oiovelia outside foam masses appears to be a secondary option, because individuals are rarely found in streams or rivers without foam. Additionally, in field trips in the State of Amazonas, northern Brazil, it was noticed that specimens seem to rest on twigs or banks of streams at night, since the number of specimens present on foam at this period is much lower than during the day (HDDR, personal observations).Published as part of Rodrigues, Higor D. D. & Moreira, Felipe Ferraz Figueiredo, 2016, A new species and new records of Oiovelia (Heteroptera: Gerromorpha: Veliidae) from Brazil, pp. 153-160 in Zootaxa 4078 (1) on pages 158-159, DOI: 10.11646/zootaxa.4078.1.14, http://zenodo.org/record/26496
Mapa semidetalhado dos solos da área do Campo Experimental do CPAF- Acre.
No full textColaborador: Sabrina Forte e Silva. Parte de: RODRIGUES, T. E.; SILVA, J. M. L. da; CORDEIRO, D. G.; GOMES, T. C. de A.; CARDOSO JÚNIOR, E. Q. Caracterização e classificação dos solos do Campo Experimental da Embrapa Acre, Rio Branco, Estado do Acre. Belém, PA: Embrapa Amazônia Oriental, 2001. 43 p. (Embrapa Amazônia Oriental. Documentos, 122)
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