2,268 research outputs found

    Search for new physics at BaBar

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    We present recent results concerning the searches for light Higgs-like particles in the decay Υ(3S) → γA0, A0 → μ+μ− and Υ(3S) → γA0, A0 → invisible as well as the latest upper limits measured in the search for lepton flavour violating decays τ → 3� (� = e, μ) with the BaBar experiment

    Molecular detection of parasites (Trematoda, Digenea: Bucephalidae and Monorchiidae) in the European flat oyster Ostrea edulis (Mollusca: Bivalvia)

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    Members of the globally distributed bivalve family Ostreidae (oysters) have a significant role in marine ecosystems and include species of high economic importance. In this work, we report the occurrence of digenean parasites of the families Bucephalidae (Prosorhynchoides sp.) and Monorchiidae (Postmonorchis sp.) in Mediterranean native populations of Ostrea edulis (but not in the introduced Magallana gigas). Molecular detection was based on DNA sequencing of the ribosomal intergenic spacer 2 (ITS2) marker. The importance of detecting the presence of overlooked digenean parasites in Mediterranean oysters is discussed. © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group

    The impact of SuperB on flavour physics

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    This report provides a succinct summary of the physics programme of SuperB, and describes that potential in the context of experiments making measurements in flavour physics over the next 10 to 20 years. Detailed comparisons are made with Belle II and LHCb, the other B physics experiments that will run in this decade. SuperB will play a crucial role in defining the landscape of flavour physics over the next 20 years.Comment: 20 pages, 6 figure

    A 1.25 Gbit/s serializer for LHC data and trigger optical links

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    Several LHC detectors require high-speed digital optical links for data transmission in both data readout and trigger systems. Commercial components can be found that meet the bandwidth requirements of most of the LHC detectors subsystems. However, they fail to meet some of the requirements frequently encountered in the LHC-HEP environment, namely: resistance to high radiation doses and operation tolerant to single event upsets. To address these problems, a high-speed transmitter ASIC (1.2Gbit/s), containing a serializer and a clock multiplying PLL was developed. The prototype was implemented in a mainstream 0.25um CMOS technology and was designed using well-established radiation tolerant layout practices to achieve resistance to high radiation doses. This implementation serves as a base for the development of radiation tolerant IC’s that will make feasible the transmission of data using common local area networks protocols in typical LHC radiation hard environments. The ASIC was embedded in a test setup that uses a commercial optical receiver and de-serializer. Error free data transmission at 1.2Gbit/s was achieved proving the prototypes to be fully functional. 1

    Design and construction of new central and forward muon counters for CDF II

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    New scintillation counters have been designed and constructed for the CDF upgrade in order to complete the muon coverage of the central CDF detector, and to extend this coverage to larger pseudorapidity. A novel light collection technique using wavelength shifting fibers, together with high quality polystyrene-based scintillator resulted in compact counters with good and stable light collection efficiency over lengths extending up to 320 cm. Their design and construction is described and results of their initial performance are reported.Comment: 20 pages, 15 figure