This means that if it is possible to stick five quarks together, they won’t stay together for very long. The latter is paired by the anti-charm quark particle, which can also be spotted within the disintegration of the Lambda baryon cluster. The group has submitted a paper reporting its findings to the journal Physical Review Letters.
LHCb spokesperson Guy Wilkinson said that the pentaquark is much more than just a new particle.
“It represents a way to aggregate quarks, namely the fundamental constituents of ordinary protons and neutrons, in a pattern that has never been observed before in over 50 years of experimental searches”.
By developing this understanding, we may get some hints about how the universe developed after the Big Bang and how we’ve ended up with protons and neutrons instead of pentaquarks making up everyday matter.
Gell-Mann, who coined the term “quark”, received the Nobel Prize in 1969. This quark model also allows the existence of other quark composite states, such as pentaquarks composed of four quarks and an antiquark.
CERN, the European Organization for Nuclear Research has discovered a new class of particles known as pentaquarks, which could pave the way to understand the matter that all humans or animals are made of. Studying the spectrum of masses of the J/ψ and the proton revealed that intermediate states were sometimes involved in their production. In fact, through detailed analysis of the data, they actually discovered two pentaquarks and have given them the catchy names Pc(4450)+ and Pc(4380)+.
“We have examined all possibilities for these signals, and conclude that they can only be explained by pentaquark states”, Syracuse University physicist and collaboration member Tomasz Skwarnicki said in a statement. The team on the LHCb experiment made their discovery by looking in detail at other exotic hadrons produced in the collisions and they way these break apart. LHCb’s research looked for the particles from many perspectives, with all results pointing to the same conclusion.
The group’s next step will be to study how, exactly, quarks are bound together in pentaquarks-loosely or tightly.
Scientists hypothesized that a category of particles known as baryons that consists of neutrons and protons, are made up of three fractionally charged objects known as quarks whereas other particles known as mesons are made up of quark-antiquark pairs. More tests will be necessary to see how this pentaquark behaves and what it can teach us about physics, but those will begin as soon as the collider starts its next run.