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Partons as quarks

The data are consistent with (16.2.6). As for B x) we show in Fig. 16.4 some data on xFz and F2 for neutrinos with energies between 30 and 200 GeV scattering on iron. It is clear that B x) 1 for larger x but B x) 1 at small x. We conclude from (16.2.7) that there are few antipartons at large x but many at small x. [Pg.361]

Since the Cabibbo theory of weak interactions and its successor the SM gauge theory of weak and electromagnetic interactions are most simply formulated in terms of leptons and quarks, and since the low energy data are nicely consistent with this and a picture of the hadrons as built up from quarks, it would be most natural to expect that the point-like granules, the partons, discovered inside the hadrons, are in fact the quarks. Prom the point of view of hadron model building one tends to think of quarks as particles with a well-defined mass, whereas our partons have a continuous range of mass rrij = a mN(0 a 1). But, as mentioned earlier, the [Pg.361]

We have already seen, however, that there must be antipartons present in the hadrons. Thus the naive quark model in which a proton say is just made up of uud quarks is not adequate and we must allow for the existence of quark-antiquark pairs inside the hadrons. [Pg.362]

Experimentally, however, does not seem to decrease as u) increases [Pg.363]

It is amusing to note that the regime f oo, fixed, corresponds to high energy Compton scattering of virtual photon of mass and thus is the region of diffractive or Regge [Pg.363]


See other pages where Partons as quarks is mentioned: [Pg.361]    [Pg.361]    [Pg.363]   


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