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: ¹H–¹³C Decoupling01:04

¹³C NMR: ¹H–¹³C Decoupling

1.6K
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...
1.6K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.4K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
1.4K
Detection of Black Holes01:10

Detection of Black Holes

2.5K
Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
2.5K
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

2.5K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
2.5K
2D NMR: Overview of Heteronuclear Correlation Techniques01:18

2D NMR: Overview of Heteronuclear Correlation Techniques

706
Heteronuclear correlation spectroscopy is an analytical technique that investigates the coupling between different types of nuclei, often a proton and an X-nucleus, such as carbon-13 or nitrogen-15. This method is commonly used in nuclear magnetic resonance (NMR) spectroscopy to gain insights into complex chemical compounds' structural and compositional aspects. A typical heteronuclear correlation spectrum displays X-nucleus chemical shifts on one axis and a proton spectrum on the other...
706
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.4K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.4K

You might also read

Related Articles

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

Sort by
Same author

Obesity-cancer convergence in the destiny of an adipocyte.

Minerva endocrinology·2026
Same author

First UK Experience of Robotic Nerve Coaptation in the Head and Neck.

The Journal of craniofacial surgery·2026
Same author

Flow between Extremal One-Point Energy Correlators in QCD.

Physical review letters·2026
Same author

The Role of Cemiplimab in Treating Locally Advanced Cutaneous SCC: A UK Single-Centre Experience and the Implications for Surgical Management.

Annals of surgical oncology·2026
Same author

ASO Visual Abstract: The Role of Cemiplimab in Treating Locally Advanced Cutaneous SCC-A UK Single-Centre Experience and the Implications for Surgical Management.

Annals of surgical oncology·2026
Same author

Precise Extraction of α_{em}(m_{Z}^{2}) at the Tera-Z Stage of a Future Circular Collider.

Physical review letters·2025

Related Experiment Video

Updated: Jan 3, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

8.9K

Measuring Higgs Couplings without Higgs Bosons.

Brian Henning1, Davide Lombardo1, Marc Riembau1

  • 1Départment de Physique Théorique, Université de Genève, 24 quai Ernest-Ansermet, 1211 Genève 4, Switzerland.

Physical Review Letters
|November 26, 2019
PubMed
Summary
This summary is machine-generated.

Measuring Higgs couplings is key for standard model tests. New off-shell, high-energy analyses reveal energy-growing effects in vector boson amplitudes, offering complementary insights to on-shell Higgs measurements.

More Related Videos

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

27.4K
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.8K

Related Experiment Videos

Last Updated: Jan 3, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

8.9K
Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

27.4K
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

8.8K

Area of Science:

  • High Energy Physics
  • Particle Physics
  • Collider Physics

Background:

  • Higgs coupling measurements are crucial for testing the Standard Model.
  • Precision tests at colliders rely on accurate Higgs coupling data.

Purpose of the Study:

  • To explore novel methods for measuring Higgs couplings.
  • To investigate energy-growing effects in specific amplitudes involving longitudinally polarized vector bosons.
  • To analyze these effects off-shell and at high energies.

Main Methods:

  • Studying amplitudes involving longitudinally polarized vector bosons.
  • Analyzing off-shell and high-energy scattering processes.
  • Developing a novel program for Higgs coupling measurements.

Main Results:

  • Modifications in Higgs couplings induce observable energy-growing effects.
  • These effects are prominent in specific amplitudes with longitudinally polarized vector bosons.
  • Off-shell, high-energy analyses provide complementary and competitive data to on-shell measurements.

Conclusions:

  • Novel off-shell, high-energy channels offer a competitive and complementary approach to Higgs coupling measurements.
  • These methods present significant potential for future refinements and improvements in precision tests.
  • The study opens new avenues for exploring Higgs boson properties beyond the resonance peak.