Transition of Subatomic Particle to Antiparticle in Charm Mesons Proven in New Study

Experts have discovered a subatomic particle that can jump into its total opposite form and back again. The measurement of the particle's changing state was conducted by researchers from Oxford through the Large Hadron Collider or LHC.

The European Council for Nuclear Research, also known as CERN, was responsible for the research on the changing state of the subatomic particle. The developments of the study were inspired by the initial findings from the charm mesons that can transition itself to becoming antiparticle and back to their original form.

Charm meson particles contain both quark and antiquark. With the opposite distinction, the particle's structure contains a property known as mixing, where it allows the charm meson to hover between its own particle and antiparticle states. The recent study published in arXiv entitled "Observation of the mass difference between neutral charm-meson eigenstates" confirms that the quarks and antiquarks in particles like the charm meson can oscillate between the two states.

Mixing Phenomenon Identifies Particles Outside the Standard Model

The Standard Model is a theory that involves particle physics, including the jump of these particles to antiparticle, which is also known as the mixing phenomenon. It was first discovered in the 1960s through the strange mesons and the 1980s through the beauty mesons. Since 2006, only one of the four particles has been proven to oscillate in the mixing, namely the strange-beauty meson.

With the help of the newfound evidence, physicists can now expand studies surrounding the mysteries of particle behaviors outside of the Standard Model. The proof from the study can also identify particles that may not be discovered yet, and how these unknown particles affect the transitions.

Quantum physics has shared a readily available knowledge of particles being in two states at the same time. This state, as found in the charm mesons, is called quantum superposition. Quantum superposition is where a particle can be particle and antiparticle, with each of its versions having its own mass. The superposition allows the charm meson to oscillate into its antiparticle version, with a lighter or heavier mass, and back to its original form, reports Slash Gear.

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Oscillation of Charm Mesons a Missing Piece to Matter-Antimatter Relation

Using the data collected from the LHC, physicists can measure the difference between the two states of the particles, which are 1x10-38g. This figure is only available when the transition is observed multiple times through the many charm mesons produced by LHC collisions. The University of Warwick joined the research to ensure that the analysis method is as accurate as the measurement gathered from the LHC experiment readings. To do this, the team of experts developed a new technique for extreme precision.

University of Oxford professor Guy Wilkinson said that the discovery of the charm meson's capability to oscillate is way better compared to the beauty mesons, which has a very slow oscillation process that leads to challenges in measurements. It takes too much time to decay that it actually decays before it even starts to exhibit oscillation. The development of the study within the oscillation of the charm mesons can be a solution to other physics puzzles, including the questions behind the matter-antimatter asymmetry, reports Phys.org.