Scientists have discovered a duality between the two types of scattering processes in proton collisions in

**Duality in physics**

The concept of duality occurs in variousareas of physics. The most famous example is wave-particle duality in quantum mechanics. Thomas Young's famous double-slit experiment showed that light behaves like a wave, and Albert Einstein won the Nobel Prize for showing that light behaves like a particle.

The strange thing is that light is actually andone and the other at the same time. There are simply two ways to look at it, and each of them has a mathematical description. Completely different explanations for the same object.

“What we have now discovered is a similarduality,” explains Matthias Wilhelm, Associate Professor at the Niels Bohr International Academy. — We calculated the forecast for two scattering processes. The current calculations are less tangible from an experimental point of view than the famous double-slit experiment. However, there is a clear mathematical map between them, which shows that both processes contain the same information. They're connected somehow."

**New experiment**

interacting at the Large Hadron Collidermany protons - among them there are many subatomic particles, gluons and quarks. When two gluons from different protons collide, they can interact, and new particles, such as the Higgs boson, are created. These processes create interesting patterns in the detectors.

Source: Istituto Nazionale di Fisica Nucleare

Researchers map what they look likethese patterns, and theoretical physicists describe these processes in mathematical terms. The goal is to collect enough data to make predictions that can be compared with experimental results.

In the course of this work, scientists calculated the processscattering of two gluons interacting to form four gluons, as well as the scattering of two gluons interacting to form a gluon and a Higgs particle, in a slightly simplified version of the Standard Model. It turned out that the results of these two calculations are related. “This is a classic case of duality, scientists explain. “Somehow, the answer to how likely it is that one scattering process will occur is related to how likely it is that the second one will also occur.”

On the left side is the scattering process involvingtwo gluons (green/yellow and blue/cyan) interacting to form a gluon (red/magenta) and a Higgs particle (white). The more complex scattering process on the right mirrors the simpler process on the left, but here are two gluons (green/yellow and blue/cyan) interacting to form four gluons (red/magenta, red/yellow), blue/magenta and green/cyan). The black color symbolizes the fact that many different elementary interactions can occur during the collision itself. Credit: Soren J. Garnet

The strangeness of this duality lies in the fact thatthat scientists have no idea why there is a connection between two different scattering processes at all. “We mix two very different physical properties of two predictions and see a connection. But it still remains a mystery what it is, ”explain the authors of the study.

**How will this help scientists?**

According to the Standard Model and generally accepted laws of physics, these two things should not be related.

- The Standard Model is a subatomic model of the world that explains all particles and their interactions.

With the discovery of this amazing dualityscientists seem to have to continue the study. Physics has once again surprised scientists and they hope the discovery will lead to the discovery of new particles at the LHC.

So, after the discovery of the Higgs boson in 2012no new sensational particles were discovered. To get off the ground on "finding new physics," scientists try to make predictions, compare them with measurements, and look for possible deviations. That's where the answer might be.

The problem is that these processes requireincredible accuracy, both experimental and theoretical. But the larger the calculations, the more difficult it is to comply. This is where the discovered duality comes in handy. For example, one calculation may be simpler than another, but both of them will give the same answer. Scientists are going to continue experiments, how real their theory is.

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