74 research outputs found
EFT Interpretation of XENON1T Electron Recoil Excess: Neutrinos and Dark Matter
We scrutinize the XENON1T electron recoil excess in the
scalar-singlet-extended dark matter effective field theory. We confront it with
various astrophysical and laboratory constraints both in a general setup and in
the more specific, recently proposed, variant with leptophilic -odd
mediators. The latter also provide mass to the light leptons via suppressed
breaking, a structure that is well fitting with the nature of the
observed excess and the discrete symmetry leads to non-standard dark-matter
interactions. We find that the excess can be explained by neutrino--electron
interactions, linked with the neutrino and electron masses, while
dark-matter--electron scattering does not lead to statistically significant
improvement. We analyze the parameter space preferred by the anomaly and find
severe constraints that can only be avoided in certain corners of parameter
space. Potentially problematic bounds on electron couplings from Big-Bang
Nucleosynthesis can be circumvented via a late phase transition in the new
scalar sector.Comment: 11 pages, 7 figures; v2: matches version published in PR
Proximal major limb amputations – a retrospective analysis of 45 oncological cases
<p>Abstract</p> <p>Background</p> <p>Proximal major limb amputations due to malignant tumors have become rare but are still a valuable treatment option in palliation and in some cases can even cure. The aim of this retrospective study was to analyse outcome in those patients, including the postoperative course, survival, pain, quality of life, and prosthesis usage.</p> <p>Methods</p> <p>Data of 45 consecutive patients was acquired from patient's charts and contact to patients, and general practitioners. Patients with interscapulothoracic amputation (n = 14), shoulder disarticulation (n = 13), hemipelvectomy (n = 3) or hip disarticulation (n = 15) were included.</p> <p>Results</p> <p>The rate of proximal major limb amputations in patients treated for sarcoma was 2.3% (37 out of 1597). Survival for all patients was 42.9% after one year and 12.7% after five years. Survival was significantly better in patients with complete tumor resections. Postoperative chemotherapy and radiation did not prolong survival. Eighteen percent of the patients with malignant disease developed local recurrence. In 44%, postoperative complications were observed. Different modalities of postoperative pain management and the site of the amputation had no significant influence on long-term pain assessment and quality of life. Eighty-seven percent suffered from phantom pain, 15.6% considered their quality of life worse than before the operation. Thirty-two percent of the patients who received a prosthesis used it regularly.</p> <p>Conclusion</p> <p>Proximal major limb amputations severely interfere with patients' body function and are the last, albeit valuable, option within the treatment concept of extremity malignancies or severe infections. Besides short survival, high complication rates, and postoperative pain, patients' quality of life can be improved for the time they have remaining.</p
New predictive equations and site amplification estimates for the next-generation Swiss ShakeMaps
Narratives of Change and Theorisations on Continuity: the Duality of the Concept of Emerging Power in International Relations
Accelerating the path towards carbon-free aviation
This paper, created by a group of aviation and energy experts from renowned universities and research centres in Europe, who oversee the fields of energy carriers, energy storage and conversion, propulsion, aerodynamics, flight mechanics, controls, structures, materials, multidisciplinary design, and life‐cycle engineering, aims to give an overview and assessment of promising future technologies. The paper therefore identifies the potential as well as research demands of these technologies on the path to a sustainable and more environmentally friendly aviation
Primor E Honra Da Vida Soldadesca No Estado Da India: An Anonymous Late Sixteenth-Century Manual of Soldiery and Political Affirmation of the Military Frontier in India
Collins and Sivers asymmetries in muonproduction of pions and kaons off transversely polarised protons
Measurements of the Collins and Sivers asymmetries for charged pions and charged and neutral kaons produced in semi-inclusive deep-inelastic scattering of high energy muons off transversely polarised protons are presented. The results were obtained using all the available COMPASS proton data, which were taken in the years 2007 and 2010. The Collins asymmetries exhibit in the valence region a non-zero signal for pions and there are hints of non-zero signal also for kaons. The Sivers asymmetries are found to be positive for positive pions and kaons and compatible with zero otherwise. © 2015
- …