Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.0K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.0K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

244
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
244
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

386
Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
386
¹³C NMR: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

1.0K
The probability of having two carbon-13 atoms next to each other is negligible because of the low natural abundance of carbon-13. Consequently, peak splitting due to carbon-carbon spin-spin coupling is not observed in spectra. However, protons up to three sigma bonds away split the carbon signal according to the n+1 rule, resulting in complicated spectra.
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
1.0K
Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

191
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
191
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

632
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
632

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Measurements of the Electroweak Diboson Production Cross Sections in Proton-Proton Collisions at sqrt[s]=5.02  TeV Using Leptonic Decays.

Physical review letters·2021
Same author

Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at <math> </math>.

The European physical journal. C, Particles and fields·2021
Same author

Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton-proton collisions at <math> </math>.

The European physical journal. C, Particles and fields·2021
Same author

Search for a heavy vector resonance decaying to a <math></math>  boson and a Higgs boson in proton-proton collisions at <math> </math>.

The European physical journal. C, Particles and fields·2021
Same author

Precision luminosity measurement in proton-proton collisions at <math> </math> in 2015 and 2016 at CMS.

The European physical journal. C, Particles and fields·2021
Same author

Measurement of the Higgs boson production rate in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at <math> </math>.

The European physical journal. C, Particles and fields·2021

Related Experiment Video

Updated: Jun 5, 2025

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

8.5K

Probing CPT Invariance with Top Quarks at the LHC.

A Belyaev1,2, L Cerrito3,4, E Lunghi5

  • 1School of Physics and Astronomy, <a href="https://ror.org/01ryk1543">University of Southampton</a>, Southampton SO17 1BJ, United Kingdom.

Physical Review Letters
|December 13, 2024
PubMed
Summary
This summary is machine-generated.

This study presents the first model-independent CPT violation sensitivity in top-quark physics using ATLAS and CMS data. A CPT-violating background field

More Related Videos

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
09:51

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries

Published on: April 22, 2013

12.7K
Author Spotlight: Quantitative Detection of DNA Protein Crosslinks and Their Post-Translational Modifications
10:12

Author Spotlight: Quantitative Detection of DNA Protein Crosslinks and Their Post-Translational Modifications

Published on: April 21, 2023

2.7K

Related Experiment Videos

Last Updated: Jun 5, 2025

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

8.5K
Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries
09:51

Atom Probe Tomography Studies on the CuIn,GaSe2 Grain Boundaries

Published on: April 22, 2013

12.7K
Author Spotlight: Quantitative Detection of DNA Protein Crosslinks and Their Post-Translational Modifications
10:12

Author Spotlight: Quantitative Detection of DNA Protein Crosslinks and Their Post-Translational Modifications

Published on: April 21, 2023

2.7K

Area of Science:

  • Particle Physics
  • High Energy Physics
  • Quantum Field Theory

Background:

  • CPT symmetry is a fundamental principle in quantum field theory.
  • The top quark is the heaviest known elementary particle, making it sensitive to new physics.
  • Previous studies have explored CPT violation, but model-independent constraints in the top-quark sector are limited.

Purpose of the Study:

  • To derive the first model-independent sensitivity to CPT violation in the top-quark sector.
  • To constrain the parameters of a CPT-violating background field interacting with top quarks.

Main Methods:

  • Utilizing combined measurements from the ATLAS and CMS experiments.
  • Analyzing the kinematical mass difference between top and antitop quarks.
  • Extracting model-independent constraints on CPT violation parameters.

Main Results:

  • The first model-independent sensitivity to CPT violation in the top-quark sector has been established.
  • The temporal component of a CPT-violating background field is constrained to the interval [-0.13, 0.29] GeV at 95% confidence level.

Conclusions:

  • The study provides stringent constraints on CPT violation in the top-quark sector.
  • These findings contribute to testing the fundamental symmetries of nature at high energy scales.