3,393,891 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)
Measurement of J/ψ production in pp collisions at s√=2.76TeV
No full textThe production of J/ψ mesons is studied with the LHCb detector using data from pp collisions at s√=2.76 TeV corresponding to an integrated luminosity of 71 nb−1. The differential cross-section for inclusive J/ψ production is measured as a function of its transverse momentum p T. The cross-section in the fiducial region 0 < p T < 12 GeV/c and rapidity 2.0 < y <4.5 is measured to be 5.6 ± 0.1 (stat) ± 0.4 (syst) μb, with the assumption of unpolarised J/ψ production. The fraction of J/ψ production from b-hadron decays is measured to be (7.1 ± 0.6 (stat) ± 0.7 (syst))%
Production of J/ψ and Υ mesons in pp collisions at s√=8 TeV
No full textThe production of J/ψ and Υ mesons in pp collisions at s√=8 TeV is studied with the LHCb detector. The J/ψ and Υ mesons are reconstructed in the μ + μ − decay mode and the signal yields are determined with a fit to the μ + μ − invariant mass distributions. The analysis is performed in the rapidity range 2. 0 < y < 4. 5 and transverse momentum range 0 < p T < 14 (15) GeV/c of the J/ψ (Υ) mesons. The J/ψ and Υ production cross-sections and the fraction of J/ψ mesons from b-hadron decays are measured as a function of the meson p T and y
Stammbuch J. F. C. P.
No full textEnthält 117 Stammbucheinträge u.a. von Heinr. Chist. Keller, Ge. Christ. Knapp, Aug. H. Niemeyer, Carol. Theoplilus Selig. - Register enthaltenHandschrift DE-3, GND 2024680-8, Signatur: Yg St. 21Einband: polierter, marmorierter Ledereinband, Rollen- und Einzelstempelverzierung (Goldprägung), Rücken mit Stempelverzierung (Goldprägung), Vorderdeckel mit geprägtem Monogramm: J. F. C. G., Hinterdeckel mit Jahreszahl: 1786, 4 erhabene Bünde, gepunzter Goldschnitt, Spiegel, Vor- und Nachsatzblatt Buntpapier.Kleeblatt S.65 eingelegtZustand: Papier kaum gebräunt und fleckig; Einband mit Gebrauchsspuren.342 Seiten (S.129/130, 139/140,157/158, 199/200, 277/278 fehlen)Eintragungsorte: Brandenburg, Halle, Potsdam, RathenowBl. II 1 Kupferstich (Halle); 1 Bleistiftzeichnung S. 24
[Report to W. F. Dyson by L. D. Stringfellow and J. F. Brumit #2]
No full textReport to Captain W. F. Dyson by L. D. Stringfellow and J. F. Brumit. The report states that Marguerite C. Oswald refused to give an interview to men who came to her door
[Report to W. F. Dyson by L. D. Stringfellow and J. F. Brumit #1]
No full textReport to Captain W. F. Dyson by L. D. Stringfellow and J. F. Brumit of the Dallas Police Department. The report states that Marguerite C. Oswald refused to give an interview to men who came to her door
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
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
[Report to W. F. Dyson by D. K. Rodgers and J. F. Brumit, March 10, 1967 #1]
No full textCriminal intelligence report which was written by J. F. Brumit and D. K. Rodgers. The report, which was addressed to W. F. Dyson, gives information regarding Sergio Arcacha. Arcacha was a desired witness by Jim Garrison, District Attorney of New Orleans, Louisiana
Syria [cartographic material] /
No full textMap of Syria and Lebanon with relief shown by hachures.; Prime meridian: Greenwich.; From: The illustrated atlas and modern history of the world, geographical, political, commercial and statistical / R. Montgomery Martin. London : J. & F. Tallis, [1851?]; Map imprint: J. & F. Tallis London Edinburgh & Dublin.; Illustrations of Jerusalem, Arabs and baggage camels on map with decorative border.; NUC, pre 1956, v. 364, p. 649.; Also available in an electronic version via the Internet at: http://nla.gov.au/nla.map-rm292
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