scholarly journals Precision test of statistical dynamics with state-to-state ultracold chemistry

Nature ◽  
2021 ◽  
Vol 593 (7859) ◽  
pp. 379-384
Author(s):  
Yu Liu ◽  
Ming-Guang Hu ◽  
Matthew A. Nichols ◽  
Dongzheng Yang ◽  
Daiqian Xie ◽  
...  
Keyword(s):  
Statistical Dynamics ◽  
Precision Test

scholarly journals Antimatter Free-Fall Experiments and Charge Asymmetry

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1192
Author(s):  
Ulrich David Jentschura
Keyword(s):  
Field Theory ◽  
Asymmetry Parameter ◽  
Charge Asymmetry ◽  
Free Fall ◽  
Experimental Setup ◽  
Charge Neutrality ◽  
The Earth ◽  
Antimatter Gravity ◽  
Precision Test ◽  
Theoretical Side

We propose a method by which one could use modified antimatter gravity experiments in order to perform a high-precision test of antimatter charge neutrality. The proposal is based on the application of a strong, external, vertically oriented electric field during an antimatter free-fall gravity experiment in the gravitational field of the Earth. The proposed experimental setup has the potential to drastically improve the limits on the charge-asymmetry parameter ϵ¯q of antimatter. On the theoretical side, we analyze possibilities to describe a putative charge-asymmetry of matter and antimatter, proportional to the parameters ϵq and ϵ¯q, by Lagrangian methods. We found that such an asymmetry could be described by four-dimensional Lorentz-invariant operators that break CPT without destroying the locality of the field theory. The mechanism involves an interaction Lagrangian with field operators decomposed into particle or antiparticle field contributions. Our Lagrangian is otherwise Lorentz, as well as PT invariant. Constraints to be derived on the parameter ϵ¯q do not depend on the assumed theoretical model.

scholarly journals Precision test of a Fermion mass texture

2001 ◽  
Vol 615 (1-3) ◽  
pp. 358-384 ◽  
Author(s):  
R.G. Roberts ◽  
A. Romanino ◽  
G.G. Ross ◽  
L. Velasco-Sevilla
Keyword(s):  
Fermion Mass ◽  
Precision Test

Research on Detecting Tris-(2,3-dibromopropyl)-Phosphate in Textiles with the HPLC/DAD Method

2012 ◽  
Vol 441 ◽  
pp. 640-644
Author(s):  
Ke Jie Fu ◽  
Li Sheng Yang ◽  
Chang Sheng Feng ◽  
Liang Chen
Keyword(s):  
Limit Of Detection ◽  
Extraction Process ◽  
Ultrasound Assisted Extraction ◽  
Routine Testing ◽  
Assisted Extraction ◽  
Ultrasound Assisted ◽  
Pre Treatment ◽  
Finishing Agent ◽  
Detecting Method ◽  
Precision Test

A detecting method for toxic flame retardant finishing agent tris-(2,3-dibromopropyl) -phosphate (TRIS for short) in textiles was studied. In the method, an acetonitrile ultrasound-assisted extraction process was included in sample pre-treatment, and HPLC/DAD was used in the separation and identification of extractives. After that, the conditions of pre-treatment and chromatograph were optimized. The results showed that the limit of detection (LOD) by this method (S/N10) is 1.0 mg/kg, its recovery ranged from 78.1% to 98.4%, and RSD of the precision test is 3.2%, of which all met the requirements for routine testing.

Precision test of large capacity scales☆

1921 ◽  
Vol 192 (5) ◽  
pp. 671-672
Author(s):  
C.A. Briggs ◽  
E.D. Gordon
Keyword(s):  
Large Capacity ◽  
Precision Test

scholarly journals Statistical Dynamics and Accretion

1957 ◽  
Vol 117 (1) ◽  
pp. 50-71 ◽  
Author(s):  
J. M. A. Danby ◽  
G. L. Camm
Keyword(s):  
Statistical Dynamics

scholarly journals Precision test of QED by direct comparison of e+e− → γγ and e+e− → e+e− at 29 GeV

1986 ◽  
Vol 166 (4) ◽  
pp. 468-472 ◽  
Author(s):  
M. Derrick ◽  
K.K. Gan ◽  
P. Kooijman ◽  
J.S. Loos ◽  
B. Musgrave ◽  
...  
Keyword(s):  
Precision Test
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