Scientists have discovered a previously unknown particle using the Large Hadron Collider

Examining the data obtained from the detectors of the Large Hadron Collider, scientists discovered a previously unknown particle, which consists of four charmed quarks. According to physicists, this is the first representative of particles of a previously unknown class.

Thanks to the collaboration of the Large Hadron Collider beauty experiment (LHCb), a new type of four-quark particle has been discovered that no one has previously observed. This unique event was reported to the general public at a recent seminar at CERN.

This unique discovery will bring scientists closer to understanding what quarks are, which are fundamental particles of the generally accepted model of our Universe.

What makes a particle unique

In most cases, these particles form groups consisting of a quark-antiquark pair or three particles. And thus the formation of protons and neutrons occurs.

Any larger particles are classified as exotic, but theoretical calculations have shown that particles may well consist of four or even five quarks (tetraquarks and pentaquarks).

Recent tests carried out at the Large Hadron Collider have shown that such particles actually exist.

And they (particles) are very suitable for a close study of strong nuclear interaction - the fundamental force of the Universe, due to which the connection of protons, neutrons and the atom of the nucleus occurs.

As D. Passaleva, the discovered particle, the first of its kind, consists of heavy quarks of the same type: a pair of charmed quarks and antiquarks. Earlier experiments made it possible to detect only tetraquarks, in which there was a maximum of a pair of heavy quarks and none of them possessed two quarks of the same type.

How it was discovered

In order to find these particles, the LHCb scientific group preliminarily performed theoretical calculations of the probable mass and after that started active studies of the data flow that was obtained during the first (2009-2013) and second (2015-2018) launch collider.

As a result of the work done, it was possible to establish that there were two energy jumps in the range of 6900 and 6400-6600 megaelectronvolts. During further work in the range from 6200 to 7400 megaelectronvolts, more than five standard deviations were recorded.

These data are quite enough to state with confidence that an absolutely new particle has been discovered.

Work on the study of a new particle continues and until scientists have established whether to consider the new particle so-called true tetraquark - a system of tightly bound quarks or is it just a combined particle of two standard steam.

Despite the ongoing work, scientists are already confidently saying that this discovery will allow full measure to verify the models of quantum chromodynamics, due to which the description of the strong interaction occurs particles.

More details about the opening can be found on the site of prints arXiv.

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