1. |
- Aaron, F. D., et al.
(författare)
-
Multi-leptons with high transverse momentum at HERA
- 2009
-
Ingår i: Journal of High Energy Physics. - : Springer Science and Business Media LLC. - 1029-8479. ; :10
-
Tidskriftsartikel (refereegranskat)abstract
- Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb(-1). The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e(+)p collision data with a scalar sum of the lepton transverse momenta above 100 GeV while 1.94 +/- 0.17 events are expected. Such events are not observed in e(-)p collisions for which 1.19 +/- 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.
|
|
2. |
- Adriani, O., et al.
(författare)
-
Measurements of quasi-trapped electron and positron fluxes with PAMELA
- 2009
-
Ingår i: Journal of Geophysical Research. - 0148-0227 .- 2156-2202. ; 114, s. A12218-
-
Tidskriftsartikel (refereegranskat)abstract
- This paper presents precise measurements of the differential energy spectra of quasi-trapped secondary electrons and positrons and their ratio between 80 MeV and 10 GeV in the near-equatorial region (altitudes between 350 km and 600 km). Latitudinal dependences of the spectra are analyzed in detail. The results were obtained from July until November 2006 onboard the Resurs-DK satellite by the PAMELA spectrometer, a general purpose cosmic ray detector system built around a permanent magnet spectrometer and a silicon-tungsten calorimeter.
|
|
3. |
|
|
4. |
- Lentini, S, et al.
(författare)
-
Surgical treatment of pericardial cyst through median sternotomy.
- 2009
-
Ingår i: Minerva chirurgica. - 0026-4733. ; 64:1, s. 105-9
-
Tidskriftsartikel (refereegranskat)abstract
- Pericardial cysts are an uncommon benign congenital anomaly in the middle mediastinum. They are thought to result from failure of fusion of one of the mesenchymal lacunae that form the pericardial sac. The authors present the case of a 77-year-old-man with a large pericardial cyst, treated by surgical resection trough a median sternotomy. They analyze the different diagnostic alternatives and the various management options in this pathology. In the reported case the authors used a surgical resection trough a median sternotomy, to facilitate the exposure of all of the cyst, extending around the great vessels area, and on the other side of the chest.
|
|
5. |
|
|
6. |
- Panaccione, G., et al.
(författare)
-
Coherent peaks and minimal probing depth in photoemission spectroscopy of Mott-Hubbard systems
- 2006
-
Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 97:11
-
Tidskriftsartikel (refereegranskat)abstract
- We have measured hard x-ray photoemission spectra of pure vanadium sesquioxide (V2O3) across its metal-insulator transition. We show that, in the metallic phase, a clear correlation exists between the shakedown satellites observed in the vanadium 2p and 3p core-level spectra and the coherent peak measured at the Fermi level. Comparing experimental results and dynamical mean-field theory calculations, we estimate the Hubbard energy U in V2O3 (4.20 +/- 0.05 eV). From our bulk-sensitive photoemission spectra we infer the existence of a critical probing depth for investigating electronic properties in strongly correlated solids.
|
|
7. |
- Szatmari, Peter, et al.
(författare)
-
Mapping autism risk loci using genetic linkage and chromosomal rearrangements.
- 2007
-
Ingår i: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 39:3, s. 319-328
-
Tidskriftsartikel (refereegranskat)abstract
- Autism spectrum disorders (ASDs) are common, heritable neurodevelopmental conditions. The genetic architecture of ASDs is complex, requiring large samples to overcome heterogeneity. Here we broaden coverage and sample size relative to other studies of ASDs by using Affymetrix 10K SNP arrays and 1,168 families with at least two affected individuals, performing the largest linkage scan to date while also analyzing copy number variation in these families. Linkage and copy number variation analyses implicate chromosome 11p12-p13 and neurexins, respectively, among other candidate loci. Neurexins team with previously implicated neuroligins for glutamatergic synaptogenesis, highlighting glutamate-related genes as promising candidates for contributing to ASDs.
|
|