scholarly journals An Interferometric Method for Particle Mass Measurements

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1232
Author(s):  
Eleonora Pasino ◽  
Simone Cialdi ◽  
Giovanni Costantini ◽  
Rafael Ferragut ◽  
Marco Giammarchi ◽  
...  
Keyword(s):  
Recent Observation ◽  
Mass Range ◽  
Particle Mass ◽  
Mass Ratio ◽  
Mass Measurements ◽  
Specific Mass ◽  
Interferometric Method

We present an interferometric method suitable to measure particle masses and, where applicable to the particle and its corresponding antiparticle, their mass ratio in order to detect possible symmetry violations between matter and antimatter. The method is based on interferometric techniques tunable to the specific mass range of the particle under consideration. The case study of electron and positron is presented, following the recent observation of positron interferometry.

scholarly journals Kinematic focus point method for particle mass measurements in missing energy events

2019 ◽  
Vol 2019 (10) ◽  
Author(s):  
Doojin Kim ◽  
Konstantin T. Matchev ◽  
Prasanth Shyamsundar
Keyword(s):  
Point Method ◽  
Particle Mass ◽  
Missing Energy ◽  
Mass Measurements ◽  
Focus Point

scholarly journals Data-Independent Acquisition for the Quantification and Identification of Metabolites in Plasma

Metabolites ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 514
Author(s):  
Tom van der Laan ◽  
Isabelle Boom ◽  
Joshua Maliepaard ◽  
Anne-Charlotte Dubbelman ◽  
Amy C. Harms ◽  
...  
Keyword(s):  
Mass Spectra ◽  
Mass Range ◽  
Correct Identification ◽  
Hydrophilic Interaction ◽  
Specific Mass ◽  
Structural Isomers ◽  
Data Independent Acquisition ◽  
Targeted Analysis ◽  
Theoretical Mass ◽  
Accurate Quantification

A popular fragmentation technique for non-targeted analysis is called data-independent acquisition (DIA), because it provides fragmentation data for all analytes in a specific mass range. In this work, we demonstrated the strengths and weaknesses of DIA. Two types of chromatography (fractionation/3 min and hydrophilic interaction liquid chromatography (HILIC)/18 min) and three DIA protocols (variable sequential window acquisition of all theoretical mass spectra (SWATH), fixed SWATH and MSALL) were used to evaluate the performance of DIA. Our results show that fast chromatography and MSALL often results in product ion overlap and complex MS/MS spectra, which reduces the quantitative and qualitative power of these DIA protocols. The combination of SWATH and HILIC allowed for the correct identification of 20 metabolites using the NIST library. After SWATH window customization (i.e., variable SWATH), we were able to quantify ten structural isomers with a mean accuracy of 103% (91–113%). The robustness of the variable SWATH and HILIC method was demonstrated by the accurate quantification of these structural isomers in 10 highly diverse blood samples. Since the combination of variable SWATH and HILIC results in good quantitative and qualitative fragmentation data, it is promising for both targeted and untargeted platforms. This should decrease the number of platforms needed in metabolomics and increase the value of a single analysis.

scholarly journals Detecting kinematic boundary surfaces in phase space: particle mass measurements in SUSY-like events

2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Dipsikha Debnath ◽  
James S. Gainer ◽  
Can Kilic ◽  
Doojin Kim ◽  
Konstantin T. Matchev ◽  
...  
Keyword(s):  
Phase Space ◽  
Particle Mass ◽  
Mass Measurements ◽  
Boundary Surfaces

scholarly journals A model for core formation in dark matter haloes and ultra-diffuse galaxies by outflow episodes

2019 ◽  
Vol 491 (3) ◽  
pp. 4523-4542 ◽  
Author(s):  
Jonathan Freundlich ◽  
Avishai Dekel ◽  
Fangzhou Jiang ◽  
Guy Ishai ◽  
Nicolas Cornuault ◽  
...  
Keyword(s):  
Dark Matter ◽  
Mass Gain ◽  
Mass Range ◽  
Dark Matter Halo ◽  
Specific Mass ◽  
Spherical System ◽  
Energy Conserving ◽  
Parameter Function ◽  
Two Parameter ◽  
Analytic Potential

ABSTRACT We present a simple model for the response of a dissipationless spherical system to an instantaneous mass change at its centre, describing the formation of flat cores in dark matter haloes and ultra-diffuse galaxies (UDGs) from feedback-driven outflow episodes in a specific mass range. This model generalizes an earlier simplified analysis of an isolated shell into a system with continuous density, velocity, and potential profiles. The response is divided into an instantaneous change of potential at constant velocities due to a given mass-loss or mass-gain, followed by energy-conserving relaxation to a new Jeans equilibrium. The halo profile is modelled by a two-parameter function with a variable inner slope and an analytic potential profile, which enables determining the associated kinetic energy at equilibrium. The model is tested against NIHAO cosmological zoom-in simulations, where it successfully predicts the evolution of the inner dark matter profile between successive snapshots in about 75 per cent of the cases, failing mainly in merger situations. This model provides a simple understanding of the formation of dark matter halo cores and UDGs by supernova-driven outflows, and a useful analytic tool for studying such processes.

Time Resolved Characterization of Diesel Particulate Emissions. 1. Instruments for Particle Mass Measurements

2001 ◽  
Vol 35 (4) ◽  
pp. 781-787 ◽  
Author(s):  
H. Moosmüller ◽  
W. P. Arnott ◽  
C. F. Rogers ◽  
J. L. Bowen ◽  
J. A. Gillies ◽  
...  
Keyword(s):  
Particle Mass ◽  
Particulate Emissions ◽  
Mass Measurements ◽  
Time Resolved ◽  
Diesel Particulate

Performance assessment of a portable nephelometer for outdoor particle mass measurement

2018 ◽  
Vol 20 (2) ◽  
pp. 370-383 ◽  
Author(s):  
Zhanyong Wang ◽  
Dongsheng Wang ◽  
Zhong-Ren Peng ◽  
Ming Cai ◽  
Qingyan Fu ◽  
...  
Keyword(s):  
Performance Assessment ◽  
Mass Measurement ◽  
Particle Mass ◽  
Mass Measurements

The availability of a portable nephelometer for outdoor PM1.0(≤1.0 μm), PM2.5(≤2.5 μm) and PM10(≤10 μm) mass measurements is assessed in Shanghai, China.

New Symbiotic Stars Monitored with the Hermes Spectrograph: A Case Study of Orbital Hα Modulation

2012 ◽  
Vol 21 (1-2) ◽  
Author(s):  
Alain Jorissen ◽  
S. Van Eck ◽  
T. Dermine ◽  
H. Van Winckel ◽  
N. Gorlova
Keyword(s):  
X Rays ◽  
Mass Ratio ◽  
Orbital Elements ◽  
Broad Emission ◽  
Short Period ◽  
Hα Emission ◽  
Orbital Modulation ◽  
Symbiotic Binaries ◽  
Narrow Emission

AbstractWe present new orbital elements for two symbiotic systems involving a giant of spectral type S, namely V420 Hya and ER Del. These orbital elements are compared with existing elements for S-type binaries and for symbiotic binaries with M-giant primaries. It is shown that among the S-type binaries, most of the short-period systems (with P in the range 300 - 1000 d) exhibit some kind of symbiotic activity (Hα emission, UV continuum, hard X-rays), but symbiotic systems are not restricted to the short-period systems. the complex and varying Hα profile of V420 Hya has been decomposed to several components (broad emission with σ ~ 140 km/s, narrow emission with σ ~ 60 km/s, and narrow absorption components). Their orbital modulation reveals that the broad emission is located close to the companion (under the hypothesis of a system with a mass ratio M

High precision particle mass measurements using the KEDR detector at the VEPP-4M collider

2014 ◽  
Vol 184 (1) ◽  
pp. 75-88
Author(s):  
Evgeny B. Levichev ◽  
Aleksandr N. Skrinskii ◽  
Yuri A. Tikhonov ◽  
Korneliy Yu. Todyshev
Keyword(s):  
High Precision ◽  
Particle Mass ◽  
Mass Measurements

Techniques for High-Quality Ambient Coarse Particle Mass Measurements

1999 ◽  
Vol 49 (9) ◽  
pp. 133-141 ◽  
Author(s):  
George A. Allen ◽  
Jung-a Annie Oh ◽  
Petros Koutrakis ◽  
Costas Sioutas
Keyword(s):  
Particle Mass ◽  
Coarse Particle ◽  
Mass Measurements ◽  
High Quality
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