QCD Highlights from CMS Strologas, J.
Nuclear and particle physics proceedings,
January-March 2020, 2020-01-00, Letnik:
309-311
Journal Article
Recenzirano
We present recent and legacy Quantum Chromodynamics (QCD) physics results based on jet final states from the CMS experiment at the LHC. The accumulated data were acquired from proton+proton ...collisions at center-of-mass energies of 8 and 13 TeV and integrated luminosity up to 19 fb−1 and 35.8 fb−1 respectively. Proton+lead collision results are also presented at 5.02 TeV.
The well-known diffusion capacitance is critical in determining the modulation response of p-n junctions and particularly of laser diodes. In this brief, we investigate the diffusion capacitance of a ...diode, as a function of the physical length of the diode and the carrier lifetimes in the narrow active region. We show that diode length and lifetime together, and not just the lifetime (which is well known), determine the bandwidth of the diode.
Higgs boson studies at the Tevatron Agnew, J. P.; Annovi, A.; Bandurin, D. V. ...
Physical review. D, Particles, fields, gravitation, and cosmology,
09/2013, Letnik:
88, Številka:
5
Journal Article
Recenzirano
Odprti dostop
We combine searches by the CDF and DO Collaborations for the standard model Higgs boson with mass in the range 90- 200 GeV /c super(2) produced in the gluon-gluon fusion, WH, ZH, ttH, and vector ...boson fusion processes, and decaying in the H arrow right bb, H arrow right W super(+)W super(-), H arrow right ZZ, H arrow right tau super(+)tau super(-), and H arrow right gamma gamma modes. The data correspond to integrated luminosities of up to 10 fb super(-1) and were collected at the Fermilab Tevatron in pp collisions at radicals = 1.96 TeV. The searches are also interpreted in the context of fermiophobic and fourth generation models. We observe a significant excess of events in the mass range between 115 and 140 GeV /c super(2). The local significance corresponds to 3.0 standard deviations at mH = 125 GeV /c super(2), consistent with the mass of the Higgs boson observed at the LHC, and we expect a local significance of 1.9 standard deviations. We separately combine searches for H arrow right bb, H arrow right W super(+)W super(-), H arrow right tau super(+)t super(-), and H arrow right gamma gamma . The observed signal strengths in all channels are consistent with the presence of a standard model Higgs boson with a mass of 125 GeV /c super(2).
A search for new dielectron-mass resonances using data recorded by the CDF II detector and corresponding to an integrated luminosity of 5.7 fb(-1) is presented. No significant excess over the ...expected standard model prediction is observed. In this data set, an event with the highest dielectron mass ever observed (960 GeV/c(2)) was recorded. The results are interpreted in the Randall-Sundrum (RS) model. Combined with the 5.4 fb(-1) diphoton analysis, the RS-graviton lower-mass limit for the coupling k/M¯(Pl)=0.1 is 1058 GeV/c(2), making it the strongest limit to date.
Final design of the C-SPECT-I lab-prototype Chang, W.; Rozler, M.; Sankar, P. ...
2015 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC),
2015-Oct.
Conference Proceeding
Improving system sensitivity without sacrificing imaging resolution is the key to improving the performance of cardiac SPECT imaging. This sensitivity increase is needed for reducing imaging time, or ...radiation dose, and/or motion artifacts for clinical imaging studies, as well as for exploration of new clinical applications. In addition, attenuation correction is necessary to yield quantitative information - the long-standing goal of SPECT imaging. These goals can be met by C-SPECT - our proposed dedicated cardiac platform for SPECT imaging. High sensitivity is accomplished by C-SPECT's optimized detection and system geometry, which wraps around patients' left-front thorax and provides the highest practical geometric efficiency for any spatial resolution of collimation. The first generation of C-SPECT platform - C-SPECT-I - is the simplified version that uses parallel axial collimation instead of the ultimate 3D converging collimation. In the presented final design, C-SPECT-I's variable collimation system provides 5 slit-arcs, for transaxial collimation to match with 2 slat-stacks, for axial collimation, to provide high system sensitivity and a large number of simultaneous projections. This lab-prototype will provide a system sensitivity that is 2.5 times that of a dual-head SPECT system for heart imaging with the same hardware resolution at the center of the imaging volume as well as unprecedented functionality and operational versatility.
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