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Now showing items 17 - 32 of 45782

  • (p,d) reaction

    Radi, Hafez A.   Rasmussen, John O.   Donangelo, Raul J.  

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  • MULTIPLE D(p)-BRANES AS A D(p+2)-BRANE

    Ganjali, M. A.   Ali-Akbari, M.  

    From BPSS matrix theory considerations, it is expected that a single D(p+2)-brane action can be obtained from N D(p)-brane action in large N limit. We examine and confirm this expectation by working out the details of DBI and Chern-Simons terms of D(p+2)-brane action from D(p)-brane action. We show that the same relation works for non-BPS, as well as BPS branes.
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  • On a theorem of D. P. Baturov

    Juan Carlos Ferrando  

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  • Advanced geometrical optics, by P. D. Lin

    Barry Johnson   R.  

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  • Capture cross sections from (p,d) reactions

    Escher, J. E.   Burke, J. T.   Casperson, R. J.   Hughes, R. O.   Ota, S.   Scielzo, N. D.  

    Cross sections for compound-nuclear reactions involving unstable targets are important for many applications, but can often not be measured directly. Several indirect methods have been proposed to determine neutron capture cross sections for unstable isotopes. We consider an approach that aims at constraining statistical calculations of capture cross sections with data obtained from light-ion transfer reactions such as (p, d). We discuss the theoretical descriptions that have to be developed in order to extract meaningful cross section constraints from such data and show some benchmark results.
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  • Advanced geometrical optics, by P. D. Lin

    Barry Johnson, R.  

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  • Capture cross sections from (p,d) reactions

    Escher, J.E.   Burke, J.T.   Casperson, R.J.   Hughes, R.O.   Ota, S.   Scielzo, N.D.   Plompen, A.   Hambsch, F.-J.   Schillebeeckx, P.   Mondelaers, W.   Heyse, J.   Kopecky, S.   Siegler, P.   Oberstedt, S.  

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  • Separable Potentials for (d,p) Reaction Calculations

    Elster, Ch.; Hlophe, L.; Eremenko, V.; Nunes, F.M.; Thompson, I.J.; Arbanas, G.; Escher, J.E.  

    An important ingredient for applications of nuclear physics to e.g. astrophysics or nuclear energy are the cross sections for reactions of neutrons with rare isotopes. Since direct measurements are often not possible, indirect methods like (d,p) reactions must be used instead. Those (d,p) reactions may be viewed as effective three-body reactions and described with Faddeev techniques. An additional challenge posed by (d,p) reactions involving heavier nuclei is the treatment of the Coulomb force. To avoid numerical complications in dealing with the screening of the Coulomb force, recently a new approach using the Coulomb distorted basis in momentum space was suggested. In order to implement this suggestion, one needs to derive a separable representation of neutron-and proton-nucleus optical potentials and compute their matrix elements in this basis.
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  • Separable Potentials for (d,p) Reaction Calculations

    Elster Ch.   Hlophe L.   Eremenko V.   Nunes F.M.   Thompson I.J.   Arbanas G.   Escher J.E.  

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  • Separable Potentials for (d,p) Reaction Calculations

    Ch. Elster   L. Hlophe   V. Eremenko   F.M. Nunes   I.J. Thompson   G. Arbanas   J.E. Escher  

    An important ingredient for applications of nuclear physics to e.g. astrophysics or nuclear energy are the cross sections for reactions of neutrons with rare isotopes. Since direct measurements are often not possible, indirect methods like (d,p) reactions must be used instead. Those (d,p) reactions may be viewed as effective three-body reactions and described with Faddeev techniques. An additional challenge posed by (d,p) reactions involving heavier nuclei is the treatment of the Coulomb force. To avoid numerical complications in dealing with the screening of the Coulomb force, recently a new approach using the Coulomb distorted basis in momentum space was suggested. In order to implement this suggestion, one needs to derive a separable representation of neutron- and proton-nucleus optical potentials and compute their matrix elements in this basis.
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  • D 2 P

    Guerraoui, Rachid; Kermarrec, Anne-Marie; Patra, Rhicheek; Taziki, Mahsa  

    The upsurge in the number of web users over the last two decades has resulted in a significant growth of online information. This information growth calls for recommenders that personalize the information proposed to each individual user. Nevertheless, personalization also opens major privacy concerns. This paper presents D2P, a novel protocol that ensures a strong form of differential privacy, which we call distance-based differential privacy, and which is particularly well suited to recommenders. D2P avoids revealing exact user profiles by creating altered profiles where each item is replaced with another one at some distance. We evaluate D2P analytically and experimentally on Movie Lens and Jester datasets and compare it with other private and non-private recommenders.
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  • Experimental overview of p(d)–A physics

    Preghenella, Roberto  

    This document reports on the main topics discussed in the experimental overview talk on p(d) A results given at the Hot Quarks 2014 Workshop. Recent measurements of the production of high transverse momentum hadrons and jets, inclusive identified particles and their correlations, quarkonia and vector bosons are presented. They represent a small set of the currently available results, which provide a deeper understanding of the hot QCD matter produced in A A collisions and reveal the presence of unexpected phenomena in small systems.
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  • I n memory of D otchi E xerowa and D imo P latikanov

    Mileva Elena  

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  • Experimental overview of p(d)–A physics

    Roberto Preghenella  

    This document reports on the main topics discussed in the experimental overview talk on p(d)-A results given at the Hot Quarks 2014 Workshop. Recent measurements of the production of high transverse momentum hadrons and jets, inclusive identified particles and their correlations, quarkonia and vector bosons are presented. They represent a small set of the currently available results, which provide a deeper understanding of the hot QCD matter produced in A-A collisions and reveal the presence of unexpected phenomena in small systems.
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  • Ultrafast biophotonics, by P. Vasa and D. Mathur

    Resnick   Andrew  

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  • Experimental overview of p(d)–A physics

    Preghenella   Roberto  

    This document reports on the main topics discussed in the experimental overview talk on p(d)-A results given at the Hot Quarks 2014 Workshop. Recent measurements of the production of high transverse momentum hadrons and jets, inclusive identified particles and their correlations, quarkonia and vector bosons are presented. They represent a small set of the currently available results, which provide a deeper understanding of the hot QCD matter produced in A-A collisions and reveal the presence of unexpected phenomena in small systems.
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