Dear all,

from 30.-31.March we had a very interesting mini-workshop on "small x, saturation and multiparton interactions", dedicated to the one years visit of Gosta Gustafson as a guest professor at University Hamburg.

The transparencies of all the presentations can be found under
https://indico.desy.de/conferenceDisplay.py?confId=1596

In the discussion at the end of the workshop, the following point were brought up:

- Experimental Issues:
 measurements at HERA are needed on
 - 3-jet+photon/4-jet cross sections and delta phi correlations
 - forward jet cross sections with higher precision and correlations between jets
 - leading particles in forward jets: is forward jet a gluon or quark jet ?
 - heavy quark production: heavy quark + forward jets (gluon induced process)
 - heavy quark production: multi-jets, delta phi correlations, and difference to inclusive jets.
 measurements at LHC
 - forward Drell Yan production
 - prompt photon + jet production
 - forward jets/Mueller Navelet jets

Theoretical Issues:
- crucial point is the proper understanding of forward jet production
- validation of multi-jet calculations in terms of parton showers
- kt-factorisation: precise determination of uPDF for gluon
- kt-factorisation:  how to include quark reggeisation ?
- further studies in area of saturation and absorptive boundary
- primordial kt of partons at large x: gauss or 1/kt2 ?

In general the mini-workshop was well received and it was appreciated to have time for discussions. We should continue with these kind of minworkshops on special topics.

Thanks to all for participating, for the presentations and for ideas in the discussion

Cheers

Hannes