scholarly journals The CDF Experiment at the Tevatron: The First Two Years of Run II

2003 ◽  
Vol 18 (24) ◽  
pp. 1643-1660 ◽  
Author(s):  
Arnd Meyer
Keyword(s):  
Top Quark ◽  
Accelerator Complex ◽  
Detector Performance ◽  
Physics Potential ◽  
The Future ◽  
First Results ◽  
Integrated Luminosity

The 1992–1995 running of the Fermilab Tevatron (the so-called Run I) ended with many important physics goals accomplished, including the discovery of the top quark, and the anticipation of many further questions to be answered in the future. After many upgrades to the detector and to the accelerator complex, Run II began in April 2001. First results obtained by the Collider Detector at Fermilab (CDF) collaboration from the analysis of early Tevatron Run II data are reported here. They fall into two categories: a number of measurements have been performed with the primary goal of establishing detector performance and physics potential. Another set of measurements make use of completely new capabilities of the upgraded detector, thus allowing for competitive results with a modest amount of integrated luminosity.

scholarly journals On the Interpretation of Nonresonant Phenomena at Colliders

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Miguel G. Folgado ◽  
Veronica Sanz
Keyword(s):  
New Physics ◽  
Derivative Expansion ◽  
Strongly Coupled ◽  
Null Results ◽  
Goldstone Bosons ◽  
Physics Potential ◽  
Low Energies ◽  
Light Particles ◽  
Integrated Luminosity

With null results in resonance searches at the LHC, the physics potential focus is now shifting towards the interpretation of nonresonant phenomena. An example of such shift is the increased popularity of the EFT programme. We can embark on such programme owing to the good integrated luminosity and an excellent understanding of the detectors, which will allow these searches to become more intense as the LHC continues. In this paper, we provide a framework to perform this interpretation in terms of a diverse set of scenarios, including (1) generic heavy new physics described at low energies in terms of a derivative expansion, such as in the EFT approach; (2) very light particles with derivative couplings, such as axions or other light pseudo-Goldstone bosons; and (3) the effect of a quasicontinuum of resonances, which can come from a number of strongly coupled theories, extradimensional models, clockwork set-ups, and their deconstructed cousins. These scenarios are not equivalent despite all nonresonance, although the matching among some of them is possible, and we provide it in this paper.

scholarly journals The Regional Virtual Power Plant – Experiences of a field test

2019 ◽  
Vol 111 ◽  
pp. 06011
Author(s):  
Joachim Seifert ◽  
Paul Seidel ◽  
Jens Werner ◽  
Andrea Meinzenbach
Keyword(s):  
Power Plant ◽  
Field Test ◽  
Energy Supply ◽  
Energy System ◽  
System Transformation ◽  
Virtual Power ◽  
German Government ◽  
Virtual Power Plant ◽  
The Future ◽  
First Results

Due to the energy system transformation initiated by the German government, the energy supply structures will be much more decentralized in the future. In the following publication the methodology of a Regional Virtual Power Plant will be described and first results from a field test will be presented.

scholarly journals Hyperons at the BM@N experiment: first results

2019 ◽  
Vol 204 ◽  
pp. 01006
Author(s):  
Julia Gornaya ◽  
Mikhail Kapishin ◽  
Vasiliy Plotnikov ◽  
Gleb Pokatashkin ◽  
Igor Rufanov ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Heavy Ion ◽  
Ion Beams ◽  
Minimum Bias ◽  
Baryonic Matter ◽  
Accelerator Complex ◽  
Preliminary Results ◽  
First Results

BM@N (Baryonic Matter at Nuclotron) is the first experiment to be realized at the accelerator complex of NICA-Nuclotron at JINR (Dubna). The aim of the experiment is to study interactions of relativistic heavy ion beams of kinetic energy per nucleon ranging from 1 to 4.5 GeV with fixed targets. First results of the analysis of minimum bias interactions of the deuteron and carbon beams of 4 AGeV kinetic energy with different targets are discussed. Preliminary results from the data collected in the recent experimental run with the argon beam are also presented.

scholarly journals Reconstruction Techniques in IceCube using Convolutional and Generative Neural Networks

2019 ◽  
Vol 207 ◽  
pp. 05005 ◽  
Author(s):  
Mirco Huennefeld
Keyword(s):  
Neural Networks ◽  
High Energy Physics ◽  
High Energy ◽  
Reconstruction Method ◽  
Network Architectures ◽  
Reconstruction Methods ◽  
Physics Potential ◽  
Reconstruction Performance ◽  
Maximum Likelihood Methods ◽  
First Results

Reliable and accurate reconstruction methods are vital to the success of high-energy physics experiments such as IceCube. Machine learning based techniques, in particular deep neural networks, can provide a viable alternative to maximum-likelihood methods. However, most common neural network architectures were developed for other domains such as image recogntion. While these methods can enhance the reconstruction performance in IceCube, there is much potential for tailored techniques. In the typical physics use-case, many symmetries, invariances and prior knowledge exist in the data, which are not fully exploited by current network architectures. Novel and specialized deep learning based reconstruction techniques are desired which can leverage the physics potential of experiments like IceCube. A reconstruction method using convolutional neural networks is presented which can significantly increase the reconstruction accuracy while greatly reducing the runtime in comparison to standard reconstruction methods in Ice- Cube. In addition, first results are discussed for future developments based on generative neural networks.

scholarly journals First results of five year follow-up of exercise capacity in Belgian CF children: what do they tell us for the future?

2008 ◽  
Vol 7 ◽  
pp. S72
Author(s):  
M. Vreys ◽  
M. Moens ◽  
F. Vermeulen ◽  
K. De Boeck ◽  
M. Proesmans
Keyword(s):  
Exercise Capacity ◽  
The Future ◽  
First Results

Low Frequency (327 MHz) VLBI Survey: First Results

1998 ◽  
Vol 164 ◽  
pp. 141-142 ◽  
Author(s):  
V. Altunin ◽  
A. Beasley ◽  
E. Lűdke ◽  
V. Alekseev ◽  
B. Lipatov ◽  
...  
Keyword(s):  
Preliminary Data ◽  
Low Frequency ◽  
Potential Candidate ◽  
Scattering Medium ◽  
Interstellar Scattering ◽  
The Future ◽  
First Results

AbstractIn this paper we report the first results of the 327 MHz VLBI survey which has been carried out in the last two years to select potential candidate sources for the future SVLBI missions and to search for directions of small scattering-“holes” in the interstellar scattering medium. During the three VLBI sessions conducted so far, we observed about 80 sources. Preliminary data analyzed from the first part of the survey shows that at least 17 out of 50 sources have compact components with a size smaller than 30 mas.

scholarly journals The very forward hadron calorimeter PSD for the future CBM@FAIR experiment

2019 ◽  
Vol 204 ◽  
pp. 11004 ◽  
Author(s):  
V. Mikhaylov ◽  
A. Kugler ◽  
V. Kushpil ◽  
O. Svoboda ◽  
P. Tlustý ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Energy Distribution ◽  
Monte Carlo Simulations ◽  
Energy Resolution ◽  
Heavy Ion ◽  
Detector Performance ◽  
Response Measurement ◽  
Gold Collisions ◽  
The Future ◽  
Radiation Conditions

The Projectile Spectator Detector (PSD) of the CBM experiment at the future FAIR facility is a compensating lead-scintillator calorimeter designed to measure the energy distribution of the forward going projectile nucleons and nuclei fragments (reaction spectators) produced close to the beam rapidity. The detector performance for the centrality and reaction plane determination is reviewed based on Monte-Carlo simulations of gold-gold collisions by means of four different heavy-ion event generators. The PSD energy resolution and the linearity of the response measured at CERN PS for the PSD supermodule consisting of 9 modules are presented. Predictions of the calorimeter radiation conditions at CBM and response measurement of one PSD module equipped with neutron irradiated MPPCs used for the light read out are discussed.

Simulation of current and future tropospheric chemistry with the Earth System Model EMAC

2020 ◽  
Author(s):  
Oliver Kirner ◽  
Jöckel Patrick ◽  
Sören Johansson ◽  
Gerald Wetzel ◽  
Franziska Winterstein
Keyword(s):  
Atmospheric Chemistry ◽  
Tropospheric Chemistry ◽  
Lower Atmosphere ◽  
Integrated Modelling ◽  
Earth System ◽  
Mixing Ratios ◽  
The Future ◽  
First Results ◽  
Acetyl Nitrate ◽  
Peroxy Acetyl Nitrate

<p>The increasing future methane (CH<sub>4</sub>) leads to changes in the lifetime of CH<sub>4</sub> and in the Hydroxyl radical (OH) and (O<sub>3</sub>) mixing ratios and distribution in the lower atmosphere. With increasing CH<sub>4</sub> the lifetime of CH<sub>4</sub> and the O<sub>3</sub> mixing ratios in the troposphere will increase, the tropospheric OH mixing ratios will decrease (Winterstein et al., 2019; Zhao et al., 2019). The CH<sub>4</sub> changes, together with the future Nitrous oxide (N<sub>2</sub>O) and temperature increase, will lead to a different tropospheric chemistry. For example, substances as acetone (CH<sub>3</sub>COCH<sub>3</sub>), ethane (C<sub>2</sub>H<sub>6</sub>), formic acid (HCOOH) or peroxy acetyl nitrate (PAN) will change their distribution and mixing ratios.</p><p>In different studies we could show that EMAC (ECHAM/MESSy Atmospheric Chemistry, Jöckel et al., 2010) has the ability to simulate some of the mentioned tropospheric substances in comparison to results of the GLORIA (Gimballed Limb Observer for Radiance Imaging of the Atmosphere) instrument, used on board of the research aircrafts Geophysica and HALO during the STRATOCLIM (July/August 2017) and WISE (August to October 2017) campaigns (Johansson et al., 2020; Wetzel et al., 2020).   </p><p>In this study, we will additional show the first results of the simulated future changes of tropospheric chemistry (especially with focus on CH<sub>3</sub>COCH<sub>3</sub>, C<sub>2</sub>H<sub>6</sub>, HCOOH and PAN and the upper troposphere) related to the future increase of CH<sub>4</sub>, N<sub>2</sub>O and temperature change as a result of climate change. For these we use different EMAC simulations from the project ESCiMo (Earth System Chemistry Integrated Modelling, Jöckel et al., 2016).</p><p>We will present some results of the comparison of EMAC to GLORIA and results with regard to the future development of the (upper) tropospheric chemistry in EMAC.    </p>

STATUS OF THE KLOE EXPERIMENT AT DAΦNE

2002 ◽  
Vol 17 (22) ◽  
pp. 3026-3035
Author(s):  
◽  
FABIO BOSSI
Keyword(s):  
Radiative Decays ◽  
The Future ◽  
First Results ◽  
Future Data ◽  
Year 2000

Since April 1999, the KLOE experiment at DAΦNE has collected about 200 pb-1 of data, produced in e+ - e- collision at the c.m. energy of 1020 MeV, the mass of the ϕ(1020) meson. This data has been used for detailed studies on the ϕ radiative decays, as well as on rare [Formula: see text] decays. The first results, based on the ~ 20 pb-1 collected in year 2000 are presented here. Perspectives for the future data taking are also discussed.

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