107 research outputs found
Simplified models for same-spin new physics scenarios
Simplified models are an important tool for the interpretation of searches
for new physics at the LHC. They are defined by a small number of new particles
together with a specific production and decay pattern. The simplified models
adopted in the experimental analyses thus far have been derived from
supersymmetric theories, and they have been used to set limits on
supersymmetric particle masses. We investigate the applicability of such
simplified supersymmetric models to a wider class of new physics scenarios, in
particular those with same-spin Standard Model partners. We focus on the pair
production of quark partners and analyze searches for jets and missing energy
within a simplified supersymmetric model with scalar quarks and a simplified
model with spin-1/2 quark partners. Despite sizable differences in the
detection efficiencies due to the spin of the new particles, the limits on
particle masses are found to be rather similar. We conclude that the
supersymmetric simplified models employed in current experimental analyses also
provide a reliable tool to constrain same-spin BSM scenarios.Comment: 11 pages + references, 7 figures; v2: added references, minor
improvements in the presentatio
Constraints on models with universal extra dimensions from dilepton searches at the LHC
Models with universal extra dimensions predict that each Standard Model
particle is accompanied by a tower of Kaluza-Klein resonances. Canonical
searches for the production and cascade decays of first Kaluza-Klein modes
through missing transverse momentum signatures suffer in general from low
detection efficiencies because of the rather compressed Kaluza-Klein particle
mass spectrum. Here, instead we analyze signatures from the production of
second Kaluza-Klein states which can decay into Standard Model particles and
thus do not result in any missing transverse momentum. Such signatures provide
a strong sensitivity, and are of particular interest as they would allow for a
clear distinction between extra dimension models and other models of new
physics like supersymmetry. We constrain the production of second Kaluza-Klein
particles from recent LHC searches for dilepton resonances, and place limits on
the compactification scale to be larger than 715GeV, and on the masses of the
second Kaluza-Klein particles to be larger than 1.4TeV.Comment: 11 pages, 4 figures, analysis updated (inclusion of data from
CMS-PAS-EXO-12-061), MUED bound improved to R^{-1} > 715 GeV, version
published in JHE
Constraining supersymmetry at the LHC with simplified models for squark production
An important tool for interpreting LHC searches for new physics are
simplified models. They are characterized by a small number of parameters and
thus often rely on a simplified description of particle production and decay
dynamics. Considering the production of squarks of the first two generations we
compare the interpretation of current LHC searches for hadronic jets plus
missing energy signatures within simplified models with the interpretation
within a complete supersymmetric model. Although we find sizable differences in
the signal efficiencies, in particular for large supersymmetric particle
masses, the differences between the mass limits derived from a simplified model
and from the complete supersymmetric model are moderate given the current LHC
sensitivity. We conclude that simplified models provide a reliable tool to
interpret the current hadronic jets plus missing energy searches at the LHC in
a more model-independent way.Comment: 11 pages + references, 5 figures; v2: title changed, minor
improvements in the presentatio
P02.181. Heart rate variability and peripheral temperature during whole body immersion at different water temperatures
P04.22. Comparison of patient-centeredness and patient-reported health outcomes in integrative medicine hospitals with conventional hospitals in Germany
Use of Homeopathy in Pediatric Oncology in Germany
Homeopathy is a frequently used complementary and alternative medicine (CAM) treatment.
We present results comparing responses of homeopathy users (HUs) and users of other forms of CAM (NHUs) in pediatric oncology (PO) in Germany. Differences between these two groups (usage, associated demographic characteristics, previous experience with CAM) are investigated. 186 (45.2%) of the 367 CAM users were exposed to homeopathy. The treatment duration amounted to
a median of 601 days for HUs and 282 days for NHUs. Parents with p (127; 76.5%) also used homeopathy for their child's
cancer. Nonmedical practitioners played a considerably greater role as source of information than did treating physician. In the majority HUs received their prescriptions from nonmedical practitioners (56%; 29.4% of NHUs). HUs communicate more frequently with their physicians about the CAM-use (77.7% versus 65.2%) and recommend CAM more often than NHUs (94% versus 85.6%). Homeopathy is the most frequently used CAM treatment in PO in Germany. HUs sustain treatment and therapies considerably longer than NHUs. Most families who had used homeopathy before their child was diagnosed with cancer also used homeopathy for the treatment of their child's cancer. Compared to other CAM treatments, patient satisfaction with homeopathy appears to be very high
Physician empathy: Definition, outcome-relevance and its measurement in patient care and medical education
Objective: The present study gives a brief introduction int
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