Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Double Resonance Techniques: Overview

Double Resonance Techniques: Overview

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...

Tagging and Fusion Proteins

Tagging and Fusion Proteins

Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...

Nuclear Transmutation

Nuclear Transmutation

Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...

Detection of Black Holes

Detection of Black Holes

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...

¹³C NMR: ¹H–¹³C Decoupling

¹³C NMR: ¹H–¹³C Decoupling

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...

Tandem Mass Spectrometry

Tandem Mass Spectrometry

Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...

You might also read

Related Articles

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

Sort by

Same author

Trial design and end points in hepatocellular carcinoma: an EASL-AASLD-ILCA consensus statement.

Nature reviews. Clinical oncology·2026

Same author

Predicting severe liver dysfunction following locoregional therapy for early- and intermediate-stage hepatocellular carcinoma.

Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society·2026

Same author

Outcomes of Simultaneous Liver-Kidney Transplant and Kidney After Liver Transplant Using the Safety Net Criteria-A Single-center Experience.

Transplantation direct·2026

Same author

Outcomes with Single Tremelimumab Regular Interval Durvalumab (STRIDE) for Unresectable Hepatocellular Carcinoma in the US Veterans Administration.

Cancers·2026

Same author

Intravenous albumin after outpatient paracentesis reduces the risk of AKI hospitalization: A national cohort study.

Hepatology (Baltimore, Md.)·2026

Same author

Steatotic Liver Disease has Surpassed Viral Hepatitis as the Leading Cause of Cirrhosis in the US Veterans Health System.

The American journal of gastroenterology·2026

Search research articles

Related Experiment Video

Updated: Jun 29, 2026

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Top tagging: a method for identifying boosted hadronically decaying top quarks.

David E Kaplan¹, Keith Rehermann, Matthew D Schwartz

¹Department of Physics, Johns Hopkins University, Baltimore, Maryland 21218, USA.

Physical Review Letters

|October 15, 2008

Summary

This summary is machine-generated.

A new method effectively distinguishes top jets from other particle jets using jet substructure. This technique significantly reduces background noise, enabling new searches in particle physics.

More Related Videos

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Preparing an Isotopically Pure ²²⁹Th Ion Beam for Studies of ^229mTh

Published on: May 3, 2019

Enhancing Efficiency and Radiolabeling Yields of Carbon-11 Radioligands for Clinical Research Using the Loop Method

Enhancing Efficiency and Radiolabeling Yields of Carbon-11 Radioligands for Clinical Research Using the Loop Method

Published on: December 20, 2024

Related Experiment Videos

Last Updated: Jun 29, 2026

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Preparing an Isotopically Pure ²²⁹Th Ion Beam for Studies of ^229mTh

Published on: May 3, 2019

Enhancing Efficiency and Radiolabeling Yields of Carbon-11 Radioligands for Clinical Research Using the Loop Method

Enhancing Efficiency and Radiolabeling Yields of Carbon-11 Radioligands for Clinical Research Using the Loop Method

Published on: December 20, 2024

Area of Science:

High Energy Physics
Particle Physics
Jet Physics

Background:

Distinguishing particle jets is crucial for analyzing high-energy collisions.
Top jets, originating from top quarks, are challenging to identify due to their complex decay patterns.

Purpose of the Study:

To develop a method for efficiently identifying top jets.
To improve the search for heavy resonances in top quark pair production (ttbar).

Main Methods:

Utilizing jet substructure analysis to resolve subjets within a jet cluster.
Imposing kinematic constraints on subjets to identify top quarks.

Main Results:

Achieved 99% rejection of light-quark/gluon jets at ~1 TeV.
Retained up to 40% of top jets, reducing dijet background by ~10,000.
Enabled top tagging in various decay channels, including semileptonic and all-hadronic.

Conclusions:

The developed method significantly enhances top jet identification capabilities.
This technique opens new avenues for high-energy physics research, particularly in searching for new resonances.
The method is versatile and applicable to diverse experimental scenarios in particle physics.