The Changing Nature of OA Journals: Helping Scholars Identify the Good, the Bad, and the Political

When the Open Access (OA) movement began at the beginning of the 21st century, librarians and select scholars saw it as a way to level the playing field by disseminating scholarly work freely, by easing the financial burden placed on rising subscription costs, and by offering alternatives to the traditional publishing model. Predatory and opportunistic OA publishers were quick to arrive on the scene, however, leaving faculty and researchers scrambling for a new and updated vetting process for selecting their publication targets. Jeffrey Beall’s blog and Beall’s List, along with other important publication directories, have become an important part of the effort to provide oversight and information to scholars about OA publishers. This paper will discuss OA controversies and review sources and opinions on the transformation of academic publishing efforts in the context of OA issues. Recent trends in librarianship demonstrate the need to educate authors on how to comprehensively research journals before submitting manuscripts to them, how to avoid predatory OA publishers, and where scholarly communication is going in terms of oversight and reputability of OA journals. This paper will briefly summarize many of the possible roles of the librarian, as well as discuss and evaluate the impact of Beall’s List on both the publishing world and librarianship

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