214,579 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′
Full text linkFirst 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)
A Tripartite Post-Recession Rebalancing
No full textIn this latest Advance & Rutgers Report, entitled “A Tripartite Post-Recession Rebalancing,” Dean James W. Hughes and Professor Joseph J. Seneca deliver an incisive assessment of the current market conditions and obstacles in the path of our economic recovery. They offer a statistical cautionary tale that the private and public sector need to hear and acknowledge in order for the economy to make continued progress.This report was published as Issue Paper Number 7, November 2011, in Advance & Rutgers Report
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Murder on the mountain: author talk with Peter J. Wosh
No full textAuthor talk by Peter J. Wosh on May 5th, 2022, on his book, "Murder on the Mountain: crime, passion, and punishment in gilded age New Jersey.
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
Full text linkThe 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
William J. Murtagh papers
No full textWilliam J. Murtagh is one of the world's leading historic preservationists. As an administrator, educator, speaker, and writer he has helped shaped the historic preservation movement for more than fifty years. Murtagh was the first Keeper of the National Register and also worked at the National Trust in an executive capacity for a number of years. He is the author of Keeping Time, a basic text on the development of the historic preservation movement. Murtagh held several teaching positions throughout his career at such institutions as Columbia University, the University of Hawaii, the University of Florida, and the University of Maryland. William J. Murtagh's papers consist of materials documenting his career in both the public and private sector. These materials include correspondence, memos and minutes, research notes, writings, speeches, lectures, reports, photographs, memorabilia, and personal records
Variation of in vivo efficiency of the bacteriophage T7 terminator depending on terminator-upstream sequences
No full textThe 40-kb linear genome of bacteriophage T7 contains only one terminator T phi, for the phage T7 RNA polymerase that is located between genes 10 and 11, Its in vitro termination efficiency has been previously found to vary upon any sequence within a transcription unit [Lee, J. T., Kim, H., Moon, K;., Kim, S., and Kang, C. (1991) Mel. Cells 1, 203-209]. In order to see if this variation takes place also in vivo, termination efficiencies within E. coli cells of the same terminator in the three different transcription units were measured in this study. The three recombinant plasmids, pNNTcat, pSNTcat, and pSSTcat, are different only in promoter-proximal, terminator distal sequence, and/or terminator-proximal upstream sequence. They have shown substantially different in vitro termination efficiencies. In vivo termination efficiencies were measured by two different methods. One method was to compare the expression product levels of a terminator-downstream caf gene (CAT activity) in the presence and absence of the terminator. The other was to compare the RNA levels of terminator-upstream and -downstream DNA. The in vivo termination efficiencies were different in three different plasmids when measured by RNA levels: levels: 97% in pNNTcat, 79% in pSNTcat, and 52% in pSSTcat (the latter tao plasmids showed significantly lower values when measured by protein levels). These in vivo efficiencies were substantially higher than the previously measured in vitro values (77%, 35%, and 17%, respectively). Nevertheless, the order of termination efficiency among the three plasmids was the same within E. call cells as in vitro: pNNTcat > pSNTcat > pSSTcat. Thus, termination efficiency of phage T7 RNA polymerase at the T7 terminator T phi varies upon both terminator-proximal and -distal upstream sequences not only in vitro, but also within E. coli cells
Algorithms for the variable sized bin packing problem
No full textIn this paper, we consider the variable sized bin packing problem where the objective is to minimize the total cost of used bins when the cost of unit size, of each bin does not increase as the bin size increases. Two greedy algorithms are described, and analyzed in three special cases:.(a) the sizes of items and bins are divisible, respectively, (b) only the sizes of bins are divisible, and (c) the sizes of bins are not divisible. Here, we say that a list of numbers a(1), a(2),..., a(m) are divisible when a(j) exactly divides a(j-1), for each 1 < j less than or equal to m. In the case of (a), the algorithms give optimal solutions, and in the case of (b), each algorithm gives a solution whose value is less than 11/9C(B*) + 4 11/9, where C(B*) is the optimal value. In the case of (c), each algorithm gives a solution whose value is less than 3/2C(B*) + 1. (C) 2002 Elsevier Science B.V. All rights reserved
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