August 15, 2022

Potential hints of unusual new particles at the hours of darkness matter detector have evaporated together with the brand new information.

Following the engaging results of the earlier experiment, the XENONnT experiment didn’t discover any indicators of further flares that would point out new particles or one other phenomenon, scientists reported July 22 in Vienna on the Worldwide Convention on Darkish Matter Identification.

The XENONnT (pronounced “xenon n ton”) experiment, carried out on the Gran Sasso Nationwide Laboratory in Italy, makes use of 5.9 metric tons of liquid xenon to seek for darkish matter, an elusive substance that has up to now solely been seen on account of its gravitational results in house. house (Sat: 10/25/16). The detector is designed to search for darkish matter particles crashing into the nuclei of xenon atoms, inflicting them to bounce. However the detector also can detect bouncing electrons.

In 2020, a smaller model of the experiment known as XENON1T reported greater than anticipated numbers of those ricocheting electrons (Sat: 06/17/20). “It obtained plenty of buzz after we revealed it,” says physicist Raphael Lang of Purdue College in West Lafayette, Indiana.

This extra, some scientists have urged, might be defined by some surprising new physics, akin to hypothetical mild particles that would originate from the Solar, known as photo voltaic axions. However the extra was not giant sufficient to be convincing, so extra information have been wanted.

Within the new evaluation, which makes use of information from about 97 days, XENONnT discovered as many electron bounces as anticipated on account of identified particle interactions, the researchers additionally reported in a paper posted on the experiment’s web site. Scientists do not know what triggered the additional detections within the earlier experiment, however it could have simply been a statistical fluke, Lang says. Or it might be as a result of small quantity of tritium — hydrogen atoms with two neutrons of their nuclei — within the detector.

With distractions eliminated, the XENONnT researchers are actually reviewing their information for nuclear recoil within the hope of discovering the actual downside.

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