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

Television drama and the urban diegesis: portraying Albuquerque in Breaking Bad

Albuquerque, New Mexico is the filming location and setting of the popular television drama Breaking Bad (2008-2013). Albuquerque is not merely a passive backdrop to the action in the show but a focal point of the series. So much so that in the geographical imaginations of many, Albuquerque and Breaking Bad have become synonymous with each other. This paper critically examines the representation of urban life within the show. To do this it draws upon and expands the existing multi-disciplinary literature on cities and films/television. As well as focusing on the influence of setting and filming the show in Albuquerque on the urban diegesis (i.e. the on-screen city), it also examines three visions of Albuquerque that are projected through the show: (1) Albuquerque as a crime-ridden city; (2) Albuquerque as a spatially divided city; and (3) Albuquerque as a city to escape from

From the Census to the city: Representing South Asians in Canada and Toronto

Since the 2006 Canadian Census, "South Asians" have constituted both Canada's and Toronto's most populous "visible minority group." This article investigates the term "South Asian" along two lines of enquiry. First, through an examination of the Canadian Census, this article sheds light on how the state produced the term "South Asian." The second aspect focuses on how this state classification has been used as the basis for antiracist activism and is inhabited and transformed as a critical transnational identity. I begin by tracing the emergence of the category "South Asian" in light of previous categories used in the Canadian Census since the migration of South Asians to Canada began in the early twentieth century. I then turn to narratives based on interviews with South Asians in Toronto to examine contemporary representations of this category. As a state category, I argue that the category "South Asian" homogenizes the diversity of South Asia and the South Asian diaspora, and yet, as a diasporic identity, the term challenges the national divides of postcolonial South Asia and the South Asian diaspora. I conclude by suggesting that South Asian identities represent complex and multiple identities that should not be reduced to a simple and artificial category of the state

Replacing the nation in the age of migration: negotiating South Asian identities in Toronto

This essay examines the role of the national in shaping the geo-political divides and connections of the South Asian diaspora in Toronto. South Asian diaspora identities are explored through two contrasting political projects that reveal the ambivalent role of the nation in producing diasporic subjectivities and their shifting borders. First, by discussing the perceptions of South Asians in Toronto, it is contended that national and religious divides are reproduced in the diaspora as a means of national belonging to the society of settlement. Diasporic geo-political divides are not merely transposed from societies of origin to settlement, but rather lie at the intersection of transnational and multicultural politics that encompass societies of origin and settlement. The reproduction of national divides in the South Asian diaspora is situated in the neighbourhoods of immigrant settlement that are positioned as the objects of multicultural efficacy. The second political project reconstitutes the national through cross-national solidarities.  Through a discussion of South Asian organizations and political initiatives in Toronto and other cities in North America, this section illuminates diasporic politics predicated on new understandings of history and connection that rejuvenate and politicize multicultural politics. The argument presented finds that national boundaries are re-inscribed in the diaspora at the intersection of the multiple claims of membership. Simultaneously, experiences and interactions in the diaspora provide the grounds for transforming and questioning the limits of national belonging

Postcolonial geographies and colonialism's mutations: The Geo-Graphing of South Asia

This article builds on postcolonial geography’s concepts of imaginative geographies, worlding, and subaltern geopolitics by applying them to an examination of South Asia’s regional formation in the mid-twentieth century. Following a review of debates in postcolonial geography, I analyze the mutations of colonialism as they shaped the dynamics of South Asia in the wake of formal decolonization. First, the Indian subcontinent’s partition inscribed colonial knowledge onto the imaginative geographies of postcolonial nation-states. Second, South Asia was symptomatic of the Cold War’s process of worlding, as reflected in the division of global space and the forms of knowledge generated by American area studies. Third, decolonization and postcolonial migrations provided subaltern geopolitical configurations of the region in tension with the nation-state. This analysis emphasizes postcolonial geography’s value in tracking colonialism’s shifts across networks of empire and in the passage from anti-colonial movements to post-colonial state territorialization

Immigrant protests in Toronto: diaspora and Sri Lanka's civil war

As Sri Lanka's civil war escalated in the spring of 2009, protests led by the Sri Lankan Tamil diaspora in Toronto appealed for an immediate ceasefire agreement between the Sri Lankan government and the Liberation Tigers of Tamil Eelam (LTTE). Held simultaneously in Chennai, London, and Oslo, the protests called for an end to the hostilities in Sri Lanka as well as recognition of the legitimacy of Tamil Eelam, a separate nation state for Tamils in Sri Lanka. Based on interviews and media coverage in Toronto, this article investigates how these ‘immigrant protests’ constituted ‘transnational acts of citizenship’. I examine the Toronto protests through three acts in the protest that challenged the exclusions of national citizenship by moving from Toronto's streets, statist discourses of Canadian citizenship, and the violence of war in Sri Lanka. Although these transnational acts of citizenship were rendered inaudible in public culture, the article concludes by exploring the possibilities of citizenship and belonging in the Sri Lankan Tamil diaspora following the defeat of the LTTE