How robust is the result of the Standard Model Higgs boson search at LEP?

An excess of signal-like events above the expected background, corresponding to approximately three standard deviations, was observed in the search for the Standard Model Higgs boson at LEP in 2000. This excess is consistent with the existence of a Higgs boson with mass 115GeV/c2. Relevant consistency and robustness checks, which further support the signal interpretation, are presented.Comment: 2 pages, 2 figures, XXXVIth Rencontres de Moriond, France, 200

Hints of Higgs Boson Production at LEP

An excess of signal-like events above the expected background, corresponding to approximately three standard deviations, was observed in the search for the standard model Higgs boson at LEP in 2000. This excess is consistent with the existence of a 115GeV/c2 Higgs particle.Comment: 5 pages, 9 figures, Conference LEPTRE, XIII Convegno sulla fisica al LEP, Roma, 200

Log amplifier instrument measures physiological biopotentials over wide dynamic range

To record biopotentials with extreme dynamic ranges, biopotential inputs are capacitatively coupled to a miniature, low power, solid-state signal conditioner consisting of a two-stage differential preamplifier that has a low noise figure. The ouput of the preamplifier uses diodes to provide an overall gain which is nearly logarithmic

Probing extra spacetime dimensions at the Tevatron

Theories with extra spacetime dimensions aiming at resolving the hierarchy problem have recently been developed. These scenarios have provided exciting new grounds for experimental probes. A review of the searches conducted at the Tevatron in this framework during its first running phase and the prospects for its second running phase are reviewed.Comment: Proceedings of the SUSY 2002 conference, Hamburg, Germany. 8 pages corrected reference and a typ

Impact of GeoGebra on the Students’ Conceptual: Understanding of Limit of a Function in Bhutan

The paradigm shift from traditional didactic instruction to technology-enriched teaching and learning environments significantly benefits learners. Educational technology can visualize abstract mathematical concepts contextually and graphically and allow learners to actively construct this knowledge. This study aims to ascertain the efficacy of a computer-assisted instruction method using GeoGebra in further developing the concept of the function limit for grade XI students. This study employed a quasi-experiment static-group comparison design with 60 students from Gongzim Ugyen Dorji Central School at Haa in Bhutan. The students were divided into two equal groups. Group ‘A’ used the GeoGebra software, while group ‘B’ used the conventional method to learn the limit of the function. The data was collected through a Conceptual Knowledge Test of Limit Function. In addition, an independent sample t-test was employed using the Statistical Package for the Social Sciences (SPSS 22.0). This study demonstrated that students who were taught using GeoGebra outperformed those who learned through conventional methods. The results confirmed that GeoGebra software could enhance and significantly improve students’ conceptual understanding of the limit of the function

Hypersonic research engine project. Phase 2: Aerothermodynamic Integration Model (AIM) test report

The Hypersonic Research Engine-Aerothermodynamic Integration Model (HRE-AIM) was designed, fabricated, and tested in the Hypersonic Tunnel Facility. The HRE-AIM is described along with its installation in the wind tunnel facility. Test conditions to which the HRE-AIM was subjected and observations made during the tests are discussed. The overall engine performance, component interaction, and ignition limits for the design are evaluated

Chemical and metabolic characteristics of brain tissue. Electrical impedance correlates

Chemical and metabolic characteristics of brain tissue - electrical impedance correlate