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showing 10 items of 3069 documents
Measurement of an excess ofB¯→D(*)τ−ν¯τdecays and implications for charged Higgs bosons
2013
The concept for this analysis is to a large degree based on earlier BABAR work and we acknowledge the guidance provided by M. Mazur. The authors consulted with theorists A. Datta, S. Westhoff, S. Fajfer, J. Kamenik, and I. Nisandzic on the calculations of the charged Higgs contributions to the decay rates. We are grateful for the extraordinary contributions of our PEP-II colleagues in achieving the excellent luminosity and machine conditions that have made this work possible. The success of this project also relied critically on the expertise and dedication of the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and the kind hospi…
Search for Anomalous Production of Events with a Photon, Jet, b-quark Jet, and Missing Transverse Energy
2009
We present a signature-based search for the anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a b quark, and missing transverse energy ((sic)(T)). The search uses data corresponding to 2.0 fb(-1) of integrated luminosity from p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. From 6.697 47 x 10(6) events with a photon candidate with transverse energy E-T > 25 GeV, we find 617 events with (sic)(T) > 25 GeV and two or more jets with E-T > 15 GeV, at least one identified as originating from a b quark, versus an expectation of 607 +/- 113 event…
Charged lepton induced one kaon production off the nucleon
2013
We study single kaon production off the nucleon induced by electrons (positrons) i.e., e(-) (e(+)) + N -> v(e) ((v) over bar (e)) + (K) over bar (K) + N' at low energies. The possibility of observing these processes with the high luminosity beams available at TJNAF and Mainz is discussed, taking into account that the strangeness conserving electromagnetic reactions have a higher energy threshold for (K) over bar (K) production. The calculations are done using a microscopic model that starts from the SU(3) chiral Lagrangians and includes background terms and the resonant mechanisms associated to the lowest lying resonance Sigma*(1385)
Low-diffusion Xe-He gas mixtures for rare-event detection: electroluminescence yield
2020
[EN] High pressure xenon Time Projection Chambers (TPC) based on secondary scintillation (electroluminescence) signal amplification are being proposed for rare event detection such as directional dark matter, double electron capture and double beta decay detection. The discrimination of the rare event through the topological signature of primary ionisation trails is a major asset for this type of TPC when compared to single liquid or double-phase TPCs, limited mainly by the high electron diffusion in pure xenon. Helium admixtures with xenon can be an attractive solution to reduce the electron diffu- sion significantly, improving the discrimination efficiency of these optical TPCs. We have m…
γ-ray linear polarization measurements and(g9/2)−3neutron alignment in91Ru
2013
The authors would like to thank the operators of the GANIL cyclotrons for providing the 36Ar beam. We would also like to thank the EXOGAM Collaboration for use of the clover Ge detector array, the DIAMANT Collaboration for use of the charged particle detector system, and the European gamma-ray Spectroscopy Pool for use of the neutron detector system. We acknowledge funding support from the French-Polish LEA COPIGAL and the IN2P3-Polish laboratories COPIN Agreement No. 06-122, from the UK STFC, from the Swedish Research Council (Contracts No. 2007-4067 and No. 2008-5793), from the Goran Gustafsson Foundation, from the OTKA under Contract No. K100835, and from the Bolyai Janos Foundation. AG …
Illumina-based RiboMethSeq approach for mapping of 2'-O-Me residues in RNA
2016
International audience; RNA 2'-O-methylation is one of the ubiquitous nucleotide modifications found in many RNA types from Bacteria, Archaea and Eukarya. RNAs bearing 2'-O-methylations show increased resistance to degradation and enhanced stability in helices. While the exact role of each 2'-O-Me residue remained elusive, the catalytic protein Fibrillarin (Nop1 in yeast) responsible for 2'-O-methylation in eukaryotes, is associated with human pathologies. Therefore, there is an urgent need to precisely map and quantify hundreds of 2'-O-Me residues in RNA using high-throughput technologies. Here, we develop a reliable protocol using alkaline fragmentation of total RNA coupled to a commonly …
Transitions & Accompagnement du changement : Agir ensemble, changer ensemble
2018
International audience; Nous ne pouvons plus nier que les conditions de survie de l'humanité comme de la Vie au sens noble du terme se dégradent chaque jour sur notre planète. Des mouvements d'actions et de recherche proposent des solutions, parfois en tâtonnant, et selon des méthodes inclusives qui ont en commun une approche globale de l'individu, des sociétés, de la biodiversité, des interactions entre tous les éléments des systèmes vivants. Nous imaginerons ici comment échanger autrement des savoirs, biens et services, comment apprendre dans de nouvelles conditions favorisant le développement personnel au sein d'un collectif et de la biodiversité, pour aborder enfin les recherches actuel…
Le fonds Schneider et compagnie dans la grande guerre
2018
National audience; Intervention dans le cadre d'un colloque organisé par l’Académie François Bourdon, la Maison des Sciences de l’Homme de Dijon, la mission histoire de la Société Générale et le réseau Archives numériques des mondes contemporains.
Sémiotique et communication au pays du numérique : de l'interface disciplinaire à la médiation
2007
Nous exposerons une réflexion sur les bénéfices de la dialectique entre Sémiotique et Communication dans le cadre de la formation aux métiers de l'édition numérique plus précisément de la fonction du responsable d'édition numérique en ligne : rédacteurs en chef en ligne, directeurs éditoriaux de services d'information en ligne, experts en conception de services multimédia… Si cette complémentarité disciplinaire semble « aller de soi » encore faut-il l'articuler habilement, puisque le succès d'un tel dialogue réside autant dans l'autonomie conceptuelle et méthodologique de chacune que dans la performance de leur interaction. En fait, il s'agirait de deux compétences pour une même performance…
La diplomatie humanitaire ou l’impact du numérique sur la mobilisation
2018
State or sovereign nation diplomacy, which had long been an arena reserved for politicians, has never stopped evolving and changing. New actors, including non-state actors, have emerged on the scene. Further, modern means and methods of communication have played a role in revolutionizing diplomatic activity. In this context of internationalization and globalization, something completely novel has grown up in this field: non-governmental humanitarian diplomacy 2.0. The initiatives undertaken by these non-state organizations and their proven success demonstrate that new practices, new modes of communication (especially via the Internet), and new forms of discourse are being constructed. The h…