2,502 research outputs found
Finite element design of nitinol embolic protection filters based on parametric modelling with pyformex: A feasibility study
No full text
Observation of B-s(0) mesons and measurement of the B-s(0)/B+ yield ratio in PbPb collisions at root S-NN=5.02 TeV
No full textThe B0
s and B+ production yields are measured in PbPb collisions at a center-of-mass energy per
nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds
to an integrated luminosity of 1.7 nb−1. The mesons are reconstructed in the exclusive decay channels
B0
s → J/ψ(μ+μ−)φ(K+K−) and B+ → J/ψ(μ+μ−)K+, in the transverse momentum range 7–50 GeV/c
and absolute rapidity 0–2.4. The B0
s meson is observed with a statistical significance in excess of five
standard deviations for the first time in nucleus-nucleus collisions. The measurements are performed as
functions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratio
of production yields of B0
s and B+ is measured and compared to theoretical models that include quark
recombination effects
No survival benefit for patients compliant with EVAR follow up : bias or the end of follow up as we know it?
No full textObservation of B-s(0) mesons and measurement of the B-s(0)/B+ yield ratio in PbPb collisions at root S-NN=5.02 TeV
No full textThe Bs0 and B+ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integrated luminosity of 1.7 nb−1. The mesons are reconstructed in the exclusive decay channels B→s0J/ψ(μ+μ−)φ(K+K−) and B→+J/ψ(μ+μ−)K+, in the transverse momentum range 7–50 GeV/c and absolute rapidity 0–2.4. The Bs0 meson is observed with a statistical significance in excess of five standard deviations for the first time in nucleus-nucleus collisions. The measurements are performed as functions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratio of production yields of Bs0 and B+ is measured and compared to theoretical models that include quark recombination effects
Editor's Choice – European Society for Vascular Surgery (ESVS) 2023 Clinical Practice Guidelines on the Management of Atherosclerotic Carotid and Vertebral Artery Disease
No full textFunding Information: Guideline Writing Committee (GWC) members were selected by the GWC chairs and ESVS Guidelines Committee (GC) chair to represent clinicians involved in decision making in patients with atherosclerotic carotid and VA disease. The GWC comprised vascular surgeons, stroke physicians/neurologists, interventional radiologists, and interventional cardiologists (see Appendix B for specialty and institution). Views and preferences for the target population were not sought directly, but Mr Chris Macey of the Irish Heart Foundation and the Stroke Alliance for Europe collaborated in preparing section 14 (Information for Patients). GWC members provided disclosure statements regarding relationships that could be perceived as conflicts of interest (these are filed and available at ESVS headquarters via [email protected] ). GWC members received no financial support from any pharmaceutical, device, or industry body, to develop the guidelines.publishersversionpublishe
Editor's choice: Management of the diseases of mesenteric arteries and veins
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Search for resonant pair production of Higgs bosons in the b b ¯ b b ¯ final state using large-area jets in proton-proton collisions at s = 13 TeV
No full textAbstract A search is presented for the resonant production of a pair of standard model-like Higgs bosons using data from proton-proton collisions at a centre-of-mass energy of 13 TeV, collected by the CMS experiment at the CERN LHC in 2016–2018, corresponding to an integrated luminosity of 138 fb −1. The final state consists of two b quark-antiquark pairs. The search is conducted in the region of phase space where at least one of the pairs is highly Lorentz-boosted and is reconstructed as a single large-area jet. The other pair may be either similarly merged or resolved, the latter reconstructed using two b-tagged jets. The data are found to be consistent with standard model processes and are interpreted as 95% confidence level upper limits on the product of the cross sections and the branching fractions of the spin-0 radion and the spin-2 bulk graviton that arise in warped extradimensional models. The limits set are in the range 9.74–0.29 fb and 4.94–0.19 fb for a narrow radion and a graviton, respectively, with masses between 1 and 3 TeV. For a radion and for a bulk graviton with widths 10% of their masses, the limits are in the range 12.5–0.35 fb and 8.23–0.23 fb, respectively, for the same masses. These limits result in the exclusion of a narrow-width graviton with a mass below 1.2 TeV, and of narrow and 10%-width radions with masses below 2.6, and 2.9 TeV, respectively
Observation of Bs0 mesons and measurement of the Bs0/B+ yield ratio in PbPb collisions at TeV
No full textThe B and B+ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integrated luminosity of 1.7 nb−1. The mesons are reconstructed in the exclusive decay channels B and B, in the transverse momentum range 7–50 GeV/c and absolute rapidity 0–2.4. The B meson is observed with a statistical significance in excess of five standard deviations for the first time in nucleus-nucleus collisions. The measurements are performed as functions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratio of production yields of B and B+ is measured and compared to theoretical models that include quark recombination effects
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