The particles - described in (https://arxiv.org/abs/1703.04639) a paper now available on the preprint server arXiv - are all excited states of a particle called Omega-c-zero (or AaAaAeAA[c]c0), which is a baryon containi two strange and one charm quark
Table 1: Lepton and quark families for the binary rotational groups [a, b, c], their j-invariant proportionality constant N, and the predicted mass values for the quarks based upon group-to -group N ratios with the charm quark
mass [1.5 GeV] and bottom quark mass [5 GeV] as reference masses for ratios of the "up-like" and "down-like" quark states, respectively.
Previous experimental constraints on the branching fractions of t [right arrow] q[gamma] (with q representing an up or charm quark
) from the ep collider HERA are 0.29% from ZEUS  and 0.64% from H1  at the 95% confidence level (CL).
"The LHCb collaboration made a precise comparison between the decay lifetime of a particle called a D0meson (formed by a charm quark
and an up antiquark) and its anti-matter counterpart D0 (formed by an charm antiquark and up quark), when decaying either to a pair of pions or a pair of kaons.
"In the story, particle physicists at the LHC report that a pentaquark contains a charm quark
and its antimatter counterpart," Terry Breen wrote in an e-mail.
For instance, a proton is composed by two up quarks and one down quarks (uud); a neutron is composed by one up quark and two down quarks (udd); a pion, [[pi].sup.+], is composed by one up quark and one down antiquark (u[bar.d]); a charmed sigma, [[SIGMA].sup.++.sub.c], is composed by two up quarks and one charm quark
(uu[bar.c]); and so on.
The particles' masses, decay products and other data indicated a composition of a charm quark
, its antimatter counterpart, two up quarks and a down quark.
The unmatter does exists, for example some messons and antimessons, through for a trifling of a second lifetime, so the pions are unmatter (which have the composition u^d and ud^, where by u^ we mean anti-up quark, d = down quark, and analogously u = up quark and d^ = anti-down quark, while by ^ means anti), the kaon [K.sup.+] (us^), [K.sup.-] (u^s), Phi ([ss^), [D.sup.+] (cd^), [D.sup.0](cu^), [D.sup.+.sub.s] (cs^), J/Psi (cc^), [B.sup.-] (bu^), [B.sup.0] (db^), [B.sup.0.sub.s] (sb^), Upsilon (bb^), where c = charm quark
, s = strange quark, b = bottom quark, etc.
This is because of large charm quark
mass and different times scales for charm quark
and charm hadron production.