Related Experiment Video
Updated: Mar 15, 2026
07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
9.0K
Factorization and Resummation for the Near-Side Energy-Energy Correlators
Yuxun Guo1,2, Feng Yuan2, Wenbin Zhao1,2,3
1University of California, Physics Department, Berkeley, California 94720, USA.
Physical Review Letters
|March 13, 2026
Summary
Researchers improved theoretical predictions for energy-energy correlators (EECs) using a new resummation technique. This method enhances accuracy in electron-positron annihilation studies, particularly at small angles.
Area of Science:
- High-energy physics
- Quantum chromodynamics
Background:
- Energy-energy correlators (EECs) are crucial for probing hadronization.
- Previous studies factored EECs in the collinear limit.
Purpose of the Study:
- To extend EEC factorization beyond the collinear limit.
- To develop an all-order resummation for EECs.
Main Methods:
- Utilizing the dihadron fragmentation formalism.
- Deriving an all-order resummation in b_{T}-space.
- Comparing with fixed-order results.
Main Results:
- Achieved perfect matching with fixed-order results.
- Demonstrated significant resummation effects for EECs in e^{+}e^{-} annihilation.
- Showed improved theoretical predictions at small angles.
Conclusions:
- The new resummation formalism accurately describes EECs.
- This approach offers enhanced precision for theoretical predictions in particle physics experiments.
Related Concept Videos
01:21Energy Associated With a Charge Distribution
2.0K
The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.
2.0K
01:15Parseval's Theorem for Fourier transform
2.4K
Parseval's theorem is a fundamental principle in signal processing that enables the calculation of a signal's energy in either the time domain or the frequency domain. This theorem is pivotal in demonstrating energy conservation between these two domains, ensuring that the computed energy value remains consistent regardless of the domain of analysis.
To understand Parseval's theorem, it is essential to first comprehend how signal energy is typically calculated. When considering a...
To understand Parseval's theorem, it is essential to first comprehend how signal energy is typically calculated. When considering a...
2.4K
01:14Extraction: Partition and Distribution Coefficients
5.3K
The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
For extracting a solute from an aqueous phase into an...
5.3K
01:10Energy Diagrams - II
14.1K
Energy diagrams are important to understand the dynamics of a system. The topology of an energy diagram helps illustrate the equilibrium points of the system.
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
14.1K
03:25Free Energy Changes for Nonstandard States
13.8K
The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:
13.8K
01:14Energy Diagrams - I
5.8K
The dynamics of a mechanical system can be easily understood by interpreting a potential energy diagram. Since energy is a scalar quantity, the interpretation of the dynamics of the system becomes even simpler.
Take the example of a skater on a parabolic ramp. The potential energy at different points along the ramp will be proportional to the height of the ramp, which varies quadratically with the horizontal position on the ramp. As the skater moves down the ramp from the highest position,...
Take the example of a skater on a parabolic ramp. The potential energy at different points along the ramp will be proportional to the height of the ramp, which varies quadratically with the horizontal position on the ramp. As the skater moves down the ramp from the highest position,...
5.8K