Strong enhancement of parity violation effects in chiral uranium compounds

2014 ◽  
Vol 16 (32) ◽  
pp. 17043-17051 ◽  
Author(s):  
Michael Wormit ◽  
Małgorzata Olejniczak ◽  
Anna-Lena Deppenmeier ◽  
Anastasia Borschevsky ◽  
Trond Saue ◽  
...  
Keyword(s):  
Parity Violation ◽  
Strong Enhancement ◽  
Uranium Compounds ◽  
Order Of Magnitude ◽  
New Generation

A new generation of molecular candidates for parity violation measurements. The chiral UNXYZ compounds are predicted to exhibit strong parity violating effects which are up to an order of magnitude larger than for any of the previously suggested candidates.

scholarly journals Correction: Strong enhancement of parity violation effects in chiral uranium compounds

2014 ◽  
Vol 16 (46) ◽  
pp. 25650-25650
Author(s):  
Michael Wormit ◽  
Małgorzata Olejniczak ◽  
Anna-Lena Deppenmeier ◽  
Anastasia Borschevsky ◽  
Trond Saue ◽  
...  
Keyword(s):  
Parity Violation ◽  
Strong Enhancement ◽  
Uranium Compounds

scholarly journals Coherent parity violation

1976 ◽  
Vol 54 (5) ◽  
pp. 568-574 ◽  
Author(s):  
Gabriel Karl
Keyword(s):  
Optical Activity ◽  
Parity Violation ◽  
Rotatory Power ◽  
Forward Scattering ◽  
Elementary Level ◽  
Neutron Beams ◽  
Massive Particles ◽  
Order Of Magnitude ◽  
Magnitude Estimates

Recent theoretical speculations about parity violating effects in the forward scattering of massless and massive particles are reviewed at an elementary level. These phenomena are analogous to optical activity, whose history is also briefly reviewed. Order of magnitude estimates for the rotatory power are presented, and the feasibility of experiments with neutron beams is discussed.

WHAT YOUR NEXT EXPERIMENT'S DATA WILL LOOK LIKE: EVENT STORES IN THE LARGE HADRON COLLIDER ERA

2005 ◽  
Vol 20 (16) ◽  
pp. 3871-3873 ◽  
Author(s):  
DAVID MALON
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Simulated Data ◽  
Computing Power ◽  
Atlas Experiment ◽  
Computing Model ◽  
Data Volume ◽  
Order Of Magnitude ◽  
Key Issues ◽  
New Generation

Each new generation of collider experiments confronts the challenge of delivering an event store having at least the performance and functionality of current-generation stores, in the presence of an order of magnitude more data and new computing paradigms (object orientation just a few years ago; grid and service-based computing today). The ATLAS experiment at the Large Hadron Collider, for example, will produce 1.6-megabyte events at 200 Hz–an annual raw data volume of 3.2 petabytes. With derived and simulated data, the total volume may approach 10 petabytes per year. Scale, however, is not the only challenge. In the Large Hadron Collider (LHC) experiments, the preponderance of computing power will come from outside the host laboratory. More significantly, no single site will host a complete copy of the event store–data will be distributed, not simply replicated for convenience, and many physics analyses will routinely require distributed (grid) computing. This paper uses the emerging ATLAS computing model to provide a glimpse of how next-generation event stores are taking shape, touching on key issues in navigation, distribution, scale, coherence, data models and representation, metadata infrastructure, and the role(s) of databases in event store management.

scholarly journals PROBE THE EFFECTS OF SPLIT SUSY IN RARE B DECAYS

2006 ◽  
Vol 21 (14) ◽  
pp. 1137-1150 ◽  
Author(s):  
CHUAN-HUNG CHEN ◽  
CHAO-QIANG GENG
Keyword(s):  
Standard Model ◽  
Parity Violation ◽  
Branching Ratio ◽  
New Physics ◽  
B Decays ◽  
The Standard Model ◽  
Order Of Magnitude ◽  
Physics Model ◽  
Split Supersymmetry ◽  
New Interactions

We study the decays of B→K(*)ℓ+ℓ- in split supersymmetry with R-parity violation. We find that the decay branching ratio of B→Kτ+τ- in the new physics model due to the scalar interactions can be 1.8×10-6 which is about one order of magnitude larger than in the standard model, whereas those of B→Kℓ+ℓ- (ℓ=e and μ) and the K* modes are insensitive to the new physics. On the other hand, the forward–backward asymmetries of B→Kτ+τ- and Kμ+μ-, vanishing in the standard model, can be over 10 and 1%, respectively. In addition, we show that the new interactions will significantly change the forward–backward asymmetry in B→K*τ+τ-.

scholarly journals Integration and first data with a Pilatus3 6M at APS beamline 23ID-D

2014 ◽  
Vol 70 (a1) ◽  
pp. C691-C691
Author(s):  
Ruslan Sanishvili ◽  
Oleg Makarov ◽  
Mark Hilgart ◽  
Sudhir-Babu Pothineni ◽  
Sergey Stepanov ◽  
...  
Keyword(s):  
Data Collection ◽  
High Speed ◽  
Frame Rate ◽  
Array Detector ◽  
Sensitive Area ◽  
Performance Measurements ◽  
Fully Integrated ◽  
Rate Oscillation ◽  
Order Of Magnitude ◽  
New Generation

GM/CA@APS operates two insertion-device beamlines, 23ID-B and 23ID-D, and one bending magnet beamline, 23BM-B, in sector 23 of the Advanced Photon Source. We recently integrated a Pilatus3 6M detector - a new generation of large sensitive area detectors based on pixel array detector technology and marketed by Dectris. The sensitive area of the device is 423.6 mm × 434.6 mm. The Pilatus3 features the newly implemented re-triggering mechanism that increases the count-rate capabilities by almost an order of magnitude compared to previous generation Pilatus detectors. The detector installed on beamline 23ID-D is the first Pilatus3 6M with a 1000-micron thick sensor, offering higher efficiency at energies above 12 keV. The fast read-out (0.95 ms) and high speed (up to 100 Hz) of the detector allow shutterless data collection. The detector has been fully integrated into the JBluIce user interface and data processing pipeline at GM/CA. Systematic studies with protein crystals were carried out in order to optimize data collection parameters. Overall data collection speed (frame rate), oscillation width per frame, spindle axis speed, and re-triggering have been studied. Different sets of optimal parameters have been established for crystallographic data collection and for crystal screening with the raster feature (grid scanning). The results of these studies and of performance measurements will be presented. This project and GM/CA @ APS are supported by the National Institute of General Medical Sciences and Cancer Institute of NIH.

scholarly journals X-ray photon correlation spectroscopy of protein dynamics at nearly diffraction-limited storage rings

IUCrJ ◽  
2019 ◽  
Vol 6 (5) ◽  
pp. 794-803 ◽  
Author(s):  
Johannes Möller ◽  
Michael Sprung ◽  
Anders Madsen ◽  
Christian Gutt
Keyword(s):  
Photon Correlation Spectroscopy ◽  
Signal To Noise Ratio ◽  
Protein Molecule ◽  
Storage Rings ◽  
Correlation Spectroscopy ◽  
Biological Macromolecules ◽  
Photon Correlation ◽  
X Ray ◽  
Order Of Magnitude ◽  
New Generation

This study explores the possibility of measuring the dynamics of proteins in solution using X-ray photon correlation spectroscopy (XPCS) at nearly diffraction-limited storage rings (DLSRs). We calculate the signal-to-noise ratio (SNR) of XPCS experiments from a concentrated lysozyme solution at the length scale of the hydrodynamic radius of the protein molecule. We take into account limitations given by the critical X-ray dose and find expressions for the SNR as a function of beam size, sample-to-detector distance and photon energy. Specifically, we show that the combined increase in coherent flux and coherence lengths at the DLSR PETRA IV yields an increase in SNR of more than one order of magnitude. The resulting SNR values indicate that XPCS experiments of biological macromolecules on nanometre length scales will become feasible with the advent of a new generation of synchrotron sources. Our findings provide valuable input for the design and construction of future XPCS beamlines at DLSRs.

SUPERSYMMETRIC CONTRIBUTIONS TO CP ASYMMETRY IN τ-DECAYS

2007 ◽  
Vol 22 (31) ◽  
pp. 6011-6021 ◽  
Author(s):  
D. Delepine ◽  
G. Faisel ◽  
S. Khalil ◽  
M. Shalaby
Keyword(s):  
Cp Violation ◽  
Standard Model ◽  
Parity Violation ◽  
Cp Asymmetry ◽  
The Standard Model ◽  
Order Of Magnitude ◽  
Susy Models ◽  
The Impact

We review the CP violation in the semileptonic |ΔS| = 1 τ-decays in supersymmetric extensions of the standard model (SM). We show that Within SUSY models with conserved R parity, the CP asymmetry of τ → kπν is below the current experimental limits, although it is enhanced by several order of magnitude than the SM results. We also study the impact of the lepton violation terms in SUSY models with R parity violation. We show that the CP asymmetry of τ-decay is enhanced significantly and the current experimental limits obtained by CLEO collaborations can be easily accommodated.

scholarly journals Optical verification and in-vitro characterization of two commercially available acoustic bubble counters for cardiopulmonary bypass systems

Perfusion ◽  
2017 ◽  
Vol 33 (1) ◽  
pp. 16-24 ◽  
Author(s):  
Tim Segers ◽  
Marco C. Stehouwer ◽  
Filip M.J.J. de Somer ◽  
Bastian A. de Mol ◽  
Michel Versluis
Keyword(s):  
High Speed ◽  
In Vitro Study ◽  
High Speed Imaging ◽  
In Vitro Characterization ◽  
Quantitative Monitoring ◽  
Order Of Magnitude ◽  
Air Removal ◽  
New Generation ◽  
Relative Change

Introduction: Gaseous microemboli (GME) introduced during cardiac surgery are considered as a potential source of morbidity, which has driven the development of the first bubble counters. Two new generation bubble counters, introduced in the early 2000s, claim correct sizing and counting of GME. This in-vitro study aims to validate the accuracy of two bubble counters using monodisperse bubbles in a highly controlled setting at low GME concentrations. Methods: Monodisperse GME with a radius of 43 µm were produced in a microfluidic chip. Directly after their formation, they were injected one-by-one into the BCC200 and the EDAC sensors. GME size and count, measured with the bubble counters, were optically verified using high-speed imaging. Results: During best-case scenarios or low GME concentrations of GME with a size of 43 µm in radius in an in-vitro setup, the BCC200 overestimates GME size by a factor of 2 to 3 while the EDAC underestimates the average GME size by at least a factor of two. The BCC200 overestimates the GME concentration by approximately 20% while the EDAC overestimates the concentration by nearly one order of magnitude. Nevertheless, the calculated total GME volume is only over-predicted by a factor 2 since the EDAC underestimates the actual GME size. For the BCC200, the total GME volume was over-predicted by 25 times due to the over-estimation of GME size. Conclusions: The measured errors in the absolute sizing/counting of GME do not imply that all results obtained using the bubble counters are insignificant or invalid. A relative change in bubble size or bubble concentration can accurately be measured. However, care must be taken in the interpretation of the results and their absolute values. Moreover, the devices cannot be used interchangeably when reporting GME activity. Nevertheless, both devices can be used to study the relative air removal characteristics of CPB components or for the quantitative monitoring of GME production during CPB interventions.

scholarly journals The POlarised GLEAM Survey (POGS) I: First results from a low-frequency radio linear polarisation survey of the southern sky

2018 ◽  
Vol 35 ◽  
Author(s):  
C. J. Riseley ◽  
E. Lenc ◽  
C. L. Van Eck ◽  
G. Heald ◽  
B. M. Gaensler ◽  
...  
Keyword(s):  
Faraday Rotation ◽  
Low Frequency ◽  
Frequency Component ◽  
Radio Sources ◽  
First Results ◽  
Order Of Magnitude ◽  
Murchison Widefield Array ◽  
Using Data ◽  
New Generation ◽  
Right Ascension

AbstractThe low-frequency polarisation properties of radio sources are poorly studied, particularly in statistical samples. However, the new generation of low-frequency telescopes, such as the Murchison Widefield Array (the precursor for the low-frequency component of the Square Kilometre Array) offers an opportunity to probe the physics of radio sources at very low radio frequencies. In this paper, we present a catalogue of linearly polarised sources detected at 216 MHz, using data from the Galactic and Extragalactic All-sky Murchison Widefield Array survey. Our catalogue covers the Declination range –17° to –37° and 24 h in Right Ascension, at a resolution of around 3 arcminutes. We detect 81 sources (including both a known pulsar and a new pulsar candidate) with linearly polarised flux densities in excess of 18 mJy across a survey area of approximately 6 400 deg2, corresponding to a surface density of 1 source per 79 deg2. The level of Faraday rotation measured for our sources is broadly consistent with those recovered at higher frequencies, with typically more than an order of magnitude improvement in the uncertainty compared to higher-frequency measurements. However, our catalogue is likely incomplete at low Faraday rotation measures, due to our practice of excluding sources in the region where instrumental leakage appears. The majority of sources exhibit significant depolarisation compared to higher frequencies; however, a small sub-sample repolarise at 216 MHz. We also discuss the polarisation properties of four nearby, large-angular-scale radio galaxies, with a particular focus on the giant radio galaxy ESO 422–G028, in order to explain the striking differences in polarised morphology between 216 MHz and 1.4 GHz.

scholarly journals Correction of Joint Angles From Kinect for Balance Exercising and Assessment

2014 ◽  
Vol 30 (2) ◽  
pp. 294-299 ◽  
Author(s):  
Helios De Rosario ◽  
Juan Manuel Belda-Lois ◽  
Francisco Fos ◽  
Enrique Medina ◽  
Rakel Poveda-Puente ◽  
...  
Keyword(s):  
Axial Rotation ◽  
Inverse Kinematic ◽  
Anatomical Landmarks ◽  
Joint Angles ◽  
Order Of Magnitude ◽  
Limb Kinematics ◽  
Inverse Kinematic Analysis ◽  
Standard Output ◽  
New Generation ◽  
Lower Limb Kinematics

The new generation of videogame interfaces such as Microsoft’s Kinect opens the possibility of implementing exercise programs for physical training, and of evaluating and reducing the risks of elderly people falling. However, applications such as these might require measurements of joint kinematics that are more robust and accurate than the standard output given by the available middleware. This article presents a method based on particle filters for calculating joint angles from the positions of the anatomical points detected by PrimeSense’s NITE software. The application of this method to the measurement of lower limb kinematics reduced the error by one order of magnitude, to less than 10°, except for hip axial rotation, and it was advantageous over inverse kinematic analysis, in ensuring a robust and smooth solution without singularities, when the limbs are out-stretched and anatomical landmarks are aligned.

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