Related Experiment Video
Updated: Jul 6, 2025
08:51
Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
Published on: August 18, 2017
10.3K
A Flexible and Efficient Approach to Missing Transverse Momentum Reconstruction
William Balunas1, Donatella Cavalli2, Teng Jian Khoo3
1Cavendish Laboratory, University of Cambridge, Cambridge, UK.
Computing and Software for Big Science
|January 5, 2024
Summary
This study presents a new method for precisely calculating missing transverse momentum at particle colliders. This technique improves the analysis of invisible particles like dark matter and neutrinos in high-energy physics experiments.
Area of Science:
- High Energy Physics
- Particle Physics
- Collider Physics
Background:
- Missing transverse momentum is vital for detecting invisible particles like neutrinos and dark matter.
- Calculating this precisely is challenging due to complex energy/momentum distributions in collider data.
Purpose of the Study:
- To develop an efficient method for computing missing transverse momentum.
- To support arbitrary object selection criteria for this computation.
Main Methods:
- A novel encoding strategy for missing transverse momentum computation.
- Integration of pileup suppression using calorimeter and inner detector data.
- Support for energy calibration and systematic variations.
Main Results:
- The developed method efficiently encodes necessary information for missing transverse momentum calculation.
- The strategy is compatible with various object selection criteria.
- Pileup suppression is effectively integrated into the reconstruction.
Conclusions:
- This optimized strategy enhances the use of missing transverse momentum in ATLAS experiment analyses.
- It is applicable to current (Runs 2 & 3) and future Large Hadron Collider research.
- The method improves precision in high-energy physics studies.
Related Concept Videos
01:05Collisions in Multiple Dimensions: Introduction
5.4K
It is far more common for collisions to occur in two dimensions; that is, the initial velocity vectors are neither parallel nor antiparallel to each other. Let's see what complications arise from this. The first idea is that momentum is a vector. Like all vectors, it can be expressed as a sum of perpendicular components (usually, though not always, an x-component and a y-component, and a z-component if necessary). Thus, when the statement of conservation of momentum is written for a...
5.4K
01:16Conservation of Momentum: Introduction
15.1K
The total momentum of a system consisting of N interacting objects is constant in time or is conserved. A system must meet two requirements for its momentum to be conserved:
15.1K
00:55Linear Momentum
14.4K
The term momentum is used in various ways in everyday language, most of which are consistent with the precise scientific definition. Generally, momentum implies a tendency to continue on course—to move in the same direction; we tend to speak of sports teams or politicians gaining and maintaining the momentum to win. Momentum is also associated with great mass and speed and is often considered when talking about collisions. For example, when rugby players collide and fall to the...
14.4K
01:09Moment-of-Momentum Equation
108
The moment-of-momentum equation is a critical tool for analyzing the torque produced by the rotating blades of a wind turbine. This equation is derived by applying Newton's second law to a fluid particle, which states that the rate of change of linear momentum is equal to the external force acting on the particle.
108
01:15Application of the Linear Momentum Equation
77
The application of the linear momentum equation can be used to analyze the forces needed to hold a 180-degree pipe bend in place with flowing water. In this case, water flows through the bend with a constant cross-sectional area of 0.01 square meters and a flow velocity of 15 meters per second. The pressure at the entrance is 0.2 Megapascals and the pressure at the exit is 0.16 Megapascals.
The goal is to determine the force components in the x and y directions to hold the pipe in place. Since...
The goal is to determine the force components in the x and y directions to hold the pipe in place. Since...
77
01:13Linear Momentum in Control Volume
1.0K
Newton's second law is applied to obtain the linear momentum in a control volume in a fluid system. According to this law, the rate of change of linear momentum is equal to the sum of external forces acting on the system. When a control volume matches the fluid system at a specific moment, the forces acting on both are identical. Reynolds transport theorem helps explain this by breaking down the system's linear momentum into two components: the rate of change of linear momentum within...
1.0K