Entrepreneurship in the Netherlands; SMEs and International co-operation

This is the seventh edition of the series 'Entrepreneurship in the Netherlands'. The series started in 1997 and is a joint publication of the Netherlands Ministry of Economic Affairs and EIM Business & Policy Research. This edition deals with international cooperation of SMEs. The first Chapter by EIM describes characteristics of international cooperation: why, how and with what type of effects? Thereafter staff members of the Ministry sketch the aims and the ambition of policy instruments in the field. As practical illustrations three enterprises haven been portrayed. In addition to authors from EIM and the Ministry of Economic Affairs, three staff members working on internationalisation and entrepreneurship at the Nottingham University Business school in UK, reflect on the issues covered in this publication by presenting and commenting on ten myths that surround the internationalisation of smaller private firms.

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements