The structure of the proton: Recent results from HERA

J. Gialas
1999 Proceedings of Corfu Summer Institute on Elementary Particle Physics — PoS(corfu98)   unpublished
We report here on some recent results using the ZEUS detector. Using a variety of methods, measurement of F 2 covers a very wide range 2.0 × 10 −6 < x < 0.08 and 0.11 < Q 2 < 5000 GeV 2 . The steep rise of the structure function continues down to the lowest measured x. Using a new small calorimeter next to the beam pipe (BPC), ZEUS could measure F 2 down to Q 2 0.1 GeV 2 . In this way, the transition from the DIS regime to the photoproduction regime can be studied. Fitting the F 2 data, some
more » ... clusions regarding the gluon content of the proton canbe reached. Charm production was measured and was found that it can account for up to 30% of the total inclusive cross section.
doi:10.22323/1.001.0021 fatcat:vv42nw3v4ndpppdltjtb5be3ze