The Tensor Pomeron and Small-x Deep Inelastic Scattering · arXivDesk
1912.12194Dec 27, 20196 pages, talk presented by C.E. at XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2019), Torino, Italy, April 2019
The Tensor Pomeron and Small-x Deep Inelastic Scattering
Daniel Britzger, Carlo Ewerz, Sasha Glazov, Otto Nachtmann, Stefan Schmitt
We apply the tensor-pomeron model to small-x deep-inelastic lepton-proton scattering and photoproduction. Our model includes a soft and a hard tensor pomeron as well as a reggeon contribution. Data with c.m. energies 6<s<318
Nearby in the stack
GeV and virtualities
Q² < 50 GeV²
are considered. Our fit gives a very good description of the available data in this kinematic region, including the latest HERA data for
x<0.01
. In particular, the transition region from low to high
Q2
is well described. Within the errors, the hard pomeron is absent in photoproduction. The intercepts of the soft and hard pomeron in the two-tensor-pomeron model are found to be
1.0935(−64+76)
and
1.3008(−84+73)
, respectively. We argue that a vector pomeron would not give any contribution to photoproduction.