TY  - JOUR
AU  - Knutsson, A.
TI  - Multiple interactions at HERA
JO  - Nuclear physics  / B / Proceedings supplements
VL  - 191
SN  - 0920-5632
CY  - Amsterdam
PB  - Elsevier
M1  - PUBDB-2015-04361
SP  - 141 - 150
PY  - 2009
N1  - © Elsevier B.V.
AB  - Presented are recent measurements in ep collisions at HERA, which comprise results that are expected to be sensitive to multiple interactions and the underlying event. A measurement of 3- and 4-jet event cross-sections in photoproduction, as well as two measurements which target the activity in the soft underlying event in photoproduction and deep inelastic scattering at low photon virtuality (Q^2), respectively, are reviewed. The data are compared to various QCD models with and without multiple i nteractions simulated. The multijet event cross-sections are in addition compared to a fixed-order O(@a@a_s^2) calculation.
T2  - Ringberg Workshop on New Trends in HERA Physics 2008
CY  - 5 Oct 2008 - 10 Oct 2008, Ringberg Castle (Germany)
Y2  - 5 Oct 2008 - 10 Oct 2008
M2  - Ringberg Castle, Germany
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000267433400015
DO  - DOI:10.1016/j.nuclphysbps.2009.03.121
UR  - https://bib-pubdb1.desy.de/record/276003
ER  -