Institution
University of Bergen
Education•Bergen, Hordaland, Norway•
About: University of Bergen is a education organization based out in Bergen, Hordaland, Norway. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 17106 authors who have published 52492 publications receiving 2009844 citations. The organization is also known as: Universitetet i Bergen & Universitas Bergensis.
Papers published on a yearly basis
Papers
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TL;DR: Weak isosinglet neutral heavy leptons (m) have been searched for using data collected by the DELPHI detector corresponding to 3:3 106 hadronic Z0 decays at LEP1.
Abstract: Weak isosinglet Neutral Heavy Leptons (m) have been searched for using data collected by the DELPHI detector corresponding to 3:3 106 hadronic Z0 decays at LEP1. Four separate searches have been performed, for short-lived m production giving monojet or acollinear jet topologies, and for long-lived m giving detectable secondary vertices or calorimeter clusters. No indication of the existence of these particles has been found, leading to an upper limit for the branching ratio BR(Z0 ! m) of about 1:310−6 at 95% confidence level for m masses between 3.5 and 50 GeV/c2. Outside this range the limit weakens rapidly with the m mass. The results are also interpreted in terms of limits for the single production of excited neutrinos.
337 citations
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TL;DR: Limits on the coupling strength of A^{'} to e^{+}e^{-} in the mass range m_{A^{'}}≤8 GeV are set, which exclude the values of the A^' coupling suggested by thedark-photon interpretation of the muon (g-2)_{μ} anomaly, as well as a broad range of parameters for the dark-sector models.
Abstract: We search for single-photon events in 53 fb^{-1} of e^{+}e^{-} collision data collected with the BABAR detector at the PEP-II B-Factory. We look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle A^{'} through the process e^{+}e^{-}→γA^{'}; A^{'}→invisible. Such particles, referred to as "dark photons," are motivated by theories applying a U(1) gauge symmetry to dark matter. We find no evidence for such processes and set 90% confidence level upper limits on the coupling strength of A^{'} to e^{+}e^{-} in the mass range m_{A^{'}}≤8 GeV. In particular, our limits exclude the values of the A^{'} coupling suggested by the dark-photon interpretation of the muon (g-2)_{μ} anomaly, as well as a broad range of parameters for the dark-sector models.
336 citations
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TL;DR: The detailed mapping of the Storegga Slide morphological elements and the analyses of the slide development are based on high-quality acoustic and sampling data sets acquired through a cooperation between academia and the petroleum industry as discussed by the authors.
336 citations
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TL;DR: Recent advances and strategies for transition metal-catalyzed CH activation of indoles and a versatile tool box for the preparation of structurally diverse indoles are discussed.
Abstract: The last decades have seen a tremendous expanse in the application of CH activation of many different substrate classes, including the invaluable indole scaffold. Following the exciting emergence of CH activation as a multi-faceted platform for functionalization, a versatile tool box has been developed for the preparation of structurally diverse indoles. This review article discusses recent advances and strategies for transition metal-catalyzed CH activation of indoles.
335 citations
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TL;DR: In this article, a monthly precipitation data set for 14 homogeneous rainfall zones was constructed based on 174 gauges, and the standardized precipitation index was calculated on seasonal, annual, and biannual time scales.
Abstract: In 2011, drought in the Horn of Africa again made news headlines. This study aims to quantify the meteorological component of this and other drought episodes in Ethiopia since 1971. A monthly precipitation data set for 14 homogeneous rainfall zones was constructed based on 174 gauges, and the standardized precipitation index was calculated on seasonal, annual, and biannual time scales. The results point to 2009 as a year of exceptionally widespread drought. All zones experienced drought at the annual scale, although in most zones, previous droughts were more extreme. Nationally, 2009 was the second driest year, surpassed only by the historic year 1984. Linear regression analysis indicates a precipitation decline in southern Ethiopia, during both February–May and June–September. In central and northern Ethiopia, the analysis did not provide evidence of similar tendencies. However, spring droughts have occurred more frequently in all parts of Ethiopia during the last 10–15 years.
335 citations
Authors
Showing all 17370 results
Name | H-index | Papers | Citations |
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Stephen V. Faraone | 188 | 1427 | 140298 |
Patrick O. Brown | 183 | 755 | 200985 |
Anil K. Jain | 183 | 1016 | 192151 |
Marc Weber | 167 | 2716 | 153502 |
Johan Auwerx | 158 | 653 | 95779 |
Leif Groop | 158 | 919 | 136056 |
Charles M. Perou | 156 | 573 | 202951 |
Bart Staels | 152 | 824 | 86638 |
Zhenwei Yang | 150 | 956 | 109344 |
G. Eigen | 148 | 2188 | 117450 |
Thomas Lohse | 148 | 1237 | 101631 |
Marco Costa | 146 | 1458 | 105096 |
Timothy P. Hughes | 145 | 831 | 91357 |
Hermann Kolanoski | 145 | 1279 | 96152 |
Kjell Fuxe | 142 | 1479 | 89846 |