The LHCb partnership announced that it has discovered a new type of matter that cannot be classified within the traditional quark model * CEO Rolf Heyer will speak today (Thursday) at an event open to the public at Tel Aviv University
The Large Hadron Collider beauty (LHCb) partnership operating within the Sarn particle accelerator in Geneva announced today (Wednesday) results confirming the existence of exotic hadrons - a type of matter that cannot be classified within the traditional quark model.
Hadrons are subatomic particles that take part in the strong nuclear force - the force that holds the protons inside the nucleus of the atom. Physicists have speculated since the sixties, and since then a wealth of evidence has been obtained confirming that hadrons are composed of quarks and antiquarks that determine their properties. A sub-series of hadrons, known as mesons, was created from quark and anti-quark pairs while the others - the baryons - are made of three quarks (all matter we know actually consists of baryons). The new kind of particle.
The minimum quark 'content' of Z(4430) is c c-bar d u-bar (where BAR denotes an anti-quark. Unfortunately, it was not possible to mark an upper line with the technology in which the website is built. AB) meaning it can come in a state of four quarks or two quarks and two antiquarks.
Now the LHCb partnership has published data that unequivocally confirms the existence of an exotic particle of this type, known as the Z(4430) that does not fit the traditional quark model.
The Japan-based Belle Collaboration reported the first evidence for the existence of Z(4430) in 2008. They discovered a tantalizing peak in the mass distribution of particles as a result of their science of B foods. Bell scientists later confirmed the existence of Z(4430) at a magnitude of 5.2 Sigma is the scale that particle physicists use to describe the certainty of results.
Today LHCb reports on detailed measurements of Z(4430) which confirm that it is undoubtedly a particle, of the exotic hadron type they did not expect. They analyzed over 25 B decays selected from the data of 180 trillion proton collisions at the Large Hadron Collider.
"The significance of the Z (4430) signal is amazing - at least 13.9 sigma - which confirms the existence of this mode" said LHCb spokesman Pierluigi Campana. "The LHCb analysis revealed the resonant nature of the observed structures, proving that this is indeed a particle, and not a special feature of the data."
In a rare coincidence, it will be possible to listen tomorrow to the lecture of CERN's CEO, Rolf Hoyer, who will give a lecture tomorrow at 18:30 PM in the Gilman Building at Tel Aviv University (the lecture is open to the general public). Hoyer came to Israel on the occasion of joining CERN as a full member and on the occasion of the organization's 60th anniversary.
12 תגובות
However, their existence was suggested for the first time, the happy typo)and chag sameach!)
Chen T
The normal particles (baryons) consist of 3 quarks, for example protons and neutrons. There are also particles that are made of 2, they are the nutrients. And there are particles like an electron that do not consist of quarks at all.
From what I understood - the new particle consists of 4 quarks.
Hello my father,
I did not understand from the article whether the new material is a bully consisting of three quarks
And is the novelty that it consists of three quarks and not pairs of quarks?
You can read a little here:
http://en.wikipedia.org/wiki/Exotic_hadron
Includes a link to a short entry on the particle in question in this article.
What about the E8 theory?
No evidence in the direction?
Accepts your words.
To make an efficient proposal: Paragon is also a way to improve the site...
Confidential, no mercy needed. Respect the editor, structures that make efforts and therefore (with emphasis on the word therefore) offer efficient suggestions. You can help as well 🙂
We are not children in kindergarten and we are sure that the editor of the site will not be offended that we suggest to improve it to make it convenient for everyone. At most he will reply that it is too complicated
Guys, the man is making efforts. A little mercy. Just write the formula below, and with that you will give your contribution.
Right point.
If it is too complicated to attach a picture to the text, then I would suggest at least writing the formula only in English and numbers on a separate line, like this:
Z(4430) is c c-bar d u-bar when '-' means upper
...
Continued text…
My father, instead of writing formulas manually, it would have been better to attach them as a picture.