Physicists Just Upgraded CERN In 2024!
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 Published On Jan 4, 2024

Physicists Just Upgraded CERN In 2024!

The most recent data from the search for a long-lived exotic particle known as the dark photon has been published by researchers who are working on the Compact Muon Solenoid (CMS) experiment at the European Organization for Nuclear Research (CERN).

When compared to conventional photons, which are particles of light, dark photons, which are also known as hidden photons, are distinguished by the fact that it is believed that they possess mass. This makes them an excellent option for explaining dark matter. The term "dark matter" is a catchall word that is used to represent anything in space that appears to be invisible and has only been observed through the gravitational effects it exerts. However, dark matter has never been directly discovered, and no one is certain what it actually is.

There are physicists working at CMS who are attempting to change that. The hypothetical dark photons would be formed by the decay of another particle, the Higgs boson, which was predicted in the 1960s and notably detected in 2012. This would be similar to the way that particles have been produced in other tests carried out at CERN. According to one theory, Higgs bosons are thought to decay into dark photons, which would subsequently decay into displaced muons for further decay. In order to limit the parameters at which that process would take place, the CMS Collaboration is now working on setting them.

In July of 2022, the Large Hadron Collider at CERN began its third run, which offered a higher capacity for particle collisions than the previous runs of the machine. Because of this, the algorithm, also known as the "trigger," that is used in the CMS experiment to identify interesting collisions now has a greater number of events to sort through, and as a result, it has a greater chance of identifying displaced muons that are the result of dark photons.

"We have really improved our ability to trigger on displaced muons," Juliette Alimena, who was a part of the CMS experiment, said in a release. With muons that are displaced from the point of contact by distances ranging from a few hundred micrometers to several meters, this enables us to capture a significantly greater number of events than we were able to in the past. In the event that dark photons do exist, CMS is now considerably more likely to discover them as a result of these advances.

As far as particle standards are concerned, dark photons are regarded to have a very lengthy lifetime because they only exist for a tenth of a billionth of a second. Despite the fact that they have been around for a long time, they are tough to identify, which is why no one has done it as of yet. Quite a few years have passed since the beginning of the search for dark photons. "Dark photon searches are simultaneously straightforward and challenging," said physicist James Beacham in an interview. The concept is simple since it is general and straightforward enough that planning experimental searches is quite easy. However, the challenge lies in the fact that we truly do not know where in the parameter space the dark photon could be located.

Other researchers are attempting to tune into the frequency of dark matter by using a device called a "dark matter radio." Some researchers are employing small mirrors to search for dark matter. Physicists at CMS are attempting to identify the particles as they convert into muon pairs through the process of decay.

In the near future, the Large Hadron Collider will undergo an update, which will be beneficial for CMS. As a result of the upcoming High Luminosity-LHC, the luminosity of the facility will be increased by a factor of ten, and the quantity of Higgs bosons that physicists are required to investigate will increase by an order of magnitude. By the year 2029, it is anticipated that the HL-LHC will be ready for operation. Up until the year 2026, the third run of the Large Hadron Collider (LHC) will continue.
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