Eur. Phys. J. C 24, 561-571 (2002)
DOI: 10.1007/s10052-002-0961-7
The odderon in high energy elastic pp scattering
H.G. Dosch, C. Ewerz and V. SchatzInstitut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany
(Received: 1 February 2002 / Published online: 14 June 2002 )
Abstract
We study the odderon contribution to
elastic
pp and
scattering at high energies.
Different models for the odderon-proton coupling
are considered and their effects on the differential
cross section in the dip region are investigated.
We use a Regge fit by Donnachie and Landshoff as a framework
and replace its odderon contribution by the different
models.
We consider two models for the odderon-proton impact
factor proposed by Fukugita and Kwiecinski and
by Levin and Ryskin. In addition we construct a
geometric model of the proton which allows us to
put limits on the size of a possible diquark
cluster in the proton.
All models are able to describe the data well.
The two models for the impact factor require
the strong coupling constant to be fixed rather precisely.
In the geometric model a relatively small diquark
size is required to describe the data.
© Società Italiana di Fisica, Springer-Verlag 2002
