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Träfflista för sökning "WFRF:(Baumann C.) srt2:(2005-2009)"

Sökning: WFRF:(Baumann C.) > (2005-2009)

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12.
  • Baumann, C., et al. (författare)
  • Search for direct photons in p+Pb and p+C collisions at sqrt(snn) = 17.4 GeV
  • 2008
  • Ingår i: Journal of Physics G: Nuclear and Particle Physics. - : IOP Publishing. - 0954-3899 .- 1361-6471. ; 35
  • Tidskriftsartikel (refereegranskat)abstract
    • Upper limits on direct photon production were determined as a function of the transverse momentum for 0.7 < pT ≤ 3.2 GeV/c with the WA98 experiment in p + C and p + Pb collisions at . The results are compared to direct photon measurements in Pb + Pb collisions at by WA98. Implications for a possible thermal direct photon contribution are discussed.
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13.
  • Ebbers-Baumann, A, et al. (författare)
  • Embedding point sets into plane graphs of small dilation
  • 2005
  • Ingår i: Algorithms and Computation / Lecture notes in computer science. - Berlin, Heidelberg : Springer Berlin Heidelberg. - 1611-3349 .- 0302-9743. - 3540309357 ; 3827, s. 5-16
  • Konferensbidrag (refereegranskat)abstract
    • Let S be a set of points in the plane. What is the minimum possible dilation of all plane graphs that contain S? Even for a set S as simple as five points evenly placed on the circle, this question seems hard to answer; it is not even clear if there exists a lower bound >1. In this paper we provide the first upper and lower bounds for the embedding problem. 1. Each finite point set can be embedded into the vertex set of a finite triangulation of dilation <= 1.1247. 2. Each embedding of a closed convex curve has dilation >= 1.00157. 3. Let P be the plane graph that results from intersecting n infinite families of equidistant, parallel lines in general position. Then the vertex set of P has dilation >= 2/root 3 approximate to 1.1547.
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