123,386 research outputs found
Structural characterization and biological activities of terpenic and phenolic compounds isolated from Euphorbia lagascae and Euphorbia tuckeyana
Tese de doutoramento em Farmácia (Química Farmacêutica), apresentada à Universidade de Lisboa através da Faculdade de Farmácia, 200
Fast Reconstruction and Data Scouting
Data scouting, introduced by CMS in 2011, is the use of specialized data
streams based on reduced event content, enabling LHC experiments to record
unprecedented numbers of proton-proton collision events that would otherwise be
rejected by the usual filters. These streams were created to maintain
sensitivity to new light resonances decaying to jets or muons, while requiring
minimal online and offline resources, and taking advantage of the fast and
accurate online reconstruction algorithms of the high-level trigger. The
viability of this technique was demonstrated by CMS in 2012, when 18.8
fb of collision data at TeV were collected and analyzed.
For LHC Run 2, CMS, ATLAS, and LHCb implemented or expanded similar
reduced-content data streams, promoting the concept to an essential and
flexible discovery tool for the LHC.Comment: 8 pages, 5 figures; submitted to proceedings of Connecting the Dots
201
Search for natural Supersymmetry in events with 1 b-tagged jet using razor variables at 8 TeV
We discuss a search for natural Supersymmetry in events with at least one
bottom-quark jet using razor variables in proton-proton collisions at 8 TeV
with the CMS detector. The event distribution in the plane defined by the razor
variables and is studied, searching for a peaking signal on top of
a smoothly falling standard model background. The data are consistent with the
expected background, modeled by a template function. The 95% C.L. exclusion
limit on the masses of the gluino and lightest supersymmetric particle in a
benchmark simplified model is presented. For a lightest supersymmetric particle
mass of 100 GeV, the pair production of gluinos in a multi-bottom final state
is excluded for gluino masses up to 1375 GeV.Comment: LHCP Conference 201
Micropattern gas detector technologies and applications, the work of the RD51 collaboration
The RD51 collaboration was founded in April 2008 to coordinate and facilitate
efforts for development of micropattern gaseous detectors (MPGDs). The 75
institutes from 25 countries bundle their effort, experience and resources to
develop these emerging micropattern technologies.
MPGDs are already employed in several nuclear and high-energy physics
experiments, medical imaging instruments and photodetection applications; many
more applications are foreseen. They outperform traditional wire chambers in
terms of rate capability, time and position resolution, granularity, stability
and radiation hardness. RD51 supports efforts to make MPGDs also suitable for
large areas, increase cost-efficiency, develop portable detectors and improve
ease-of-use.
The collaboration is organized in working groups which develop detectors with
new geometries, study and simulate their properties, and design optimized
electronics. Among the common supported projects are creation of test
infrastructure such as beam test and irradiation facilities, and the production
workshop.Comment: Submitted to the IEEE Nuclear Science Symposium 2010 Conference
Recor
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