Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deep inelastic inclusive and diffractive scattering at $Q^2$ values from
  25 to 320 GeV$^2$ with the ZEUS forward plug calorimeter   Deep inelastic scattering and its diffractive component, $ep \to
e^{\prime}\gamma^* p \to e^{\prime}XN$, have been studied at HERA with the ZEUS
detector using an integrated luminosity of 52.4 pb$^{-1}$. The $M_X$ method has
been used to extract the diffractive contribution. A wide range in the
centre-of-mass energy $W$ (37 -- 245 GeV), photon virtuality $Q^2$ (20 -- 450
GeV$^2$) and mass $M_X$ (0.28 -- 35 GeV) is covered. The diffractive cross
section for $2 < M_X < 15$ GeV rises strongly with $W$, the rise becoming
steeper as $Q^2$ increases. The data are also presented in terms of the
diffractive structure function, $F^{\rm D(3)}_2$, of the proton. For fixed
$Q^2$ and fixed $M_X$, $\xpom F^{\rm D(3)}_2$ shows a strong rise as $\xpom \to
0$, where $\xpom$ is the fraction of the proton momentum carried by the
Pomeron. For Bjorken-$x < 1 \cdot 10^{-3}$, $\xpom F^{\rm D(3)}_2$ shows
positive $\log Q^2$ scaling violations, while for $x \ge 5 \cdot 10^{-3}$
negative scaling violations are observed. The diffractive structure function is
compatible with being leading twist. The data show that Regge factorisation is
broken.

21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat