How many quarks are in (a) a baryon? (b) an antibaryon? (c) a meson? (d) an antimeson? How do you account for the fact that baryons have half-integral spins while mesons have spins of 0 or 1? (Hint: Quarks have spin .) ...
Quarks: Quarks are one of several types of fundamental particles, sometimes called elementary particles, meaning they are not made from smaller particles. Quarks are bound together with the weak force to create composite particles like mesons and baryons. ...
Erratum: Are the D mesons diquarks? (Physical Review Letters (1977) 38, 13, (733)) 来自 ResearchGate 喜欢 0 阅读量: 9 作者: B Stech 摘要: Non-leptonic two-body decays are discussed on the basis of a generalized factorization approach. It is shown that a satisfactory description of ...
Using the Kuti-Weisskopf model we calculate dressed quark fragmentation function from proton. We show that the fragmentation spectrum of such a quark correctly fits to the fast meson spectrum.doi:10.1016/0370-2693(80)90868-0Mehmet Akif CiritElsevier B.V.Physics Letters B...
This is the internal structure of a positively-charged pi meson, compared to a proton and a neutron. Pi mesons are made up of the same type of particles as the proton and neutron, called quarks. The difference is that the pi meson has two quarks (including an anti-quark), while protons...
Quarks-excited states or gluon-excited states, are the J^{PC}=1^{-+} hybrid mesons confirmed? High Energy Physics - PhenomenologyThe existence of ... F Iddir,L Semlala 被引量: 2发表: 2004年 Quark structure of the $X(3872)$ and $\\chi_b(3P)$ resonances We discuss the nature of...
We’rekind ofcomparing apples and orangeshere,but this is a decent way to rationalize the deal. If anything, at least you know protons are what determines an element. Depending on how many quarks are in a hadron, you can get hadrons that aren’t protons and neutrons, like mesons and pi...
Why didn't atoms exist until hundreds of thousands of years after the Big Bang? If atoms exist, why can't we see them with visible light? Why do we have a mass hierarchy of leptons and quarks? How do atoms move through solids? Explain why nuclei that contain more than 82 protons are...
This was probably the first time J/ψ regeneration in the medium was discussed albeit in a different context than dynamical regeneration from c and c¯ quarks in the medium discussed now, see e.g. Refs. [16], [17]. The intensity of the work to bring our paper out in a timely ...
Namely, if extra vector-like quarks are responsible for CKM anomalies, then at least one of them should be found at scale of few TeV, and anomalous weak isospin violating Z-boson couplings with light quarks should be detected if the experimental precision on Z hadronic decay rate is improved...