39,393 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)
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
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
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
K. F. C. Rose, The date and author of the Satyricon, with an introduction by J. P. Sullivan, 1971
No full textRastier Françoise. K. F. C. Rose, The date and author of the Satyricon, with an introduction by J. P. Sullivan, 1971. In: Revue des Études Anciennes. Tome 74, 1972, n°1-4. pp. 300-303
K. F. C. Rose, The Date and Author of the Satyricon. With an Introduction by J. P. Sullivan
No full textVerdière Raoul. K. F. C. Rose, The Date and Author of the Satyricon. With an Introduction by J. P. Sullivan. In: L'antiquité classique, Tome 42, fasc. 1, 1973. pp. 279-280
K. F. C. Rose, The date and author of the Satyricon, with an introduction by J. P. Sullivan, 1971
No full textRastier Françoise. K. F. C. Rose, The date and author of the Satyricon, with an introduction by J. P. Sullivan, 1971. In: Revue des Études Anciennes. Tome 74, 1972, n°1-4. pp. 300-303
Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays
No full textThis Letter reports a measurement of the CP violation observables SJ/ψK0S and CJ/ψK0S in the decay channel B0→J/ψK0S performed with 1.0 fb−1 of pp collisions at s√=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψK0S=0.73±0.07(stat)±0.04(syst) and CJ/ψK0S=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within
expectations from the Standard Model
Measurement of the branching fraction
No full textThe B
0
s
→ J/ψK
0
S
branching fraction is measured in a data sample corresponding to 0.41 fb−1
of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to
the penguin contributions affecting the sin 2β measurement from B
0
→ J/ψK
0
S
. The time-integrated
branching fraction is measured to be B(B
0
s
→ J/ψK
0
S
) = (1.83±0.28)×10−5
. This is the most precise
measurement to date
Aquatic hyphomycetes in Catamaran Brook: colonization dynamics, seasonal patterns, and logging effects
No full textAquatic fungal colonization dynamics and seasonal patterns were investigated in two sites in Catamaran Brook, New Brunswick, Canada, as part of a larger study to evaluate logging effects on a salmon stream. Four leaf-pack trials were conducted between May 1995 and Dec 1996 to determine species composition of the fungal community, the seasonal pattern of colonization on decaying maple leaves, and what effects, if any, invertebrate feeding and logging activities might have on community structure. Contrary to expectation, neither mesh size (i.e., invertebrate presence or absence) nor preliminary logging activity (road construction near one site) had a consistent effect on community structure. Time of immersion of the leaves in the stream, followed by season, were the major factors controlling community structure. Spore production and species diversity measures were highest during the middle part of the colonization period (generally 4-8 wk of immersion in summer trials and 2-4 wk immersion in the autumn trial), and were also higher in the autumn (Sep to Dec) than in the summer trials. Forty-five species of hyphomycetes were recorded during the study period, although 6 taxa (Alatospora acuminata, Anguillospora filiformis, Articulospora tetracladia, Geniculospora inflata, Lunulospora cymbiformis, and a sigmoid species, probably Flagellospora curvula) made up nearly 95% of all identified spores. A total of 35 species were found during the autumn trial, compared to 27 in each of the two summer trials, and 25 during a winter trial. Colonization dynamics also varied with season, but generally there were three main colonization patterns; some taxa were only present or showed highest abundance very early in the colonization period, most arrived or peaked during intermediate stages of leaf decay, and a few were characteristic of the latest stages.PT: J; CR: AKRIDGE RE, 1987, MYCOLOGIA, V79, P228 BARLOCHER F, 1974, J ECOL, V62, P761 BARLOCHER F, 1980, OECOLOGIA, V47, P303 BARLOCHER F, 1982, CAN J BOT, V60, P1487 BARLOCHER F, 1983, OIKOS, V41, P205 BARLOCHER F, 1992, ECOLOGY AQUATIC HYPH BARLOCHER F, 1992, ECOLOGY AQUATIC HYPH, P38 BARLOCHER F, 1995, ARCH HYDROBIOL, V133, P457 BERMINGHAM S, 1996, J APPL ECOL, V33, P1311 CHAMIER AC, 1984, OECOLOGIA, V64, P92 CUNJAK RA, 1990, 1751 DEP FISH OC CUNJAK RA, 1993, 1914 DEP FISH OC CUNJAK RA, 1995, CANADIAN SPECIAL PUB, V123, P191 ERMAN NA, 1995, J KANSAS ENTOMOL SOC, V68, P50 FABRE E, 1998, CAN J BOT, V76, P115 GARNETT H, 1998, THESIS MOUNT ALLISON GESSNER MO, 1993, MYCOL RES, V97, P163 GESSNER MO, 1994, ECOLOGY, V75, P1807 GONCZOL J, 1989, NOVA HEDWIGIA, V48, P391 INGOLD CT, 1975, SCI PUBLICATION, V30 IQBAL SH, 1973, T BRIT MYCOLOGICAL S, V61, P331 KAUSHIK NK, 1971, ARCH HYDROBIOL, V68, P465 MAHARNING AR, 1996, MYCOLOGIA, V88, P80 MALTBY L, 1991, WATER RES, V25, P247 MANLY BFJ, 1986, MULTIVARIATE STAT ME MARVANOVA L, 1985, BOT J LINN SOC, V91, P1 MARVANOVA L, 1997, ROPICAL MYCOLOGY, P170 NILSSON S, 1964, SYMBOLAE BOTANICAE U, V18, P1 RAVIRAJA NS, 1998, FRESHWATER BIOL, V39, P537 RAVIRAJA NS, 1998, FUNGAL DIVERS, V1, P179 RODRIGUES AP, 1997, SYDOWIA, V49, P160 RONG Q, 1995, HYDROBIOLOGIA, V316, P173 SANDERS PF, 1979, T BRIT MYCOLOGICAL S, V73, P103 SHEARER CA, 1983, MYCOLOGIA, V75, P498 SHEARER CA, 1985, T BRIT MYCOL SOC, V84, P489 SMITH B, 1996, OIKOS, V76, P70 SUBERKROPP K, 1984, T BRIT MYCOL SOC, V82, P53 SUBERKROPP K, 1992, FUNGAL COMMUNITY ITS, P729 SUBERKROPP K, 1992, J N AMER BENTHOL SOC, V11, P165 SUBERKROPP K, 1995, ECOLOGY, V76, P1433; NR: 40; TC: 11; J9: MYCOLOGIA; PG: 13; GA: 280XZSource type: Electronic(1
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