Bushfalling at all cost: the economy of migratory knowledge in Anglophone Cameroon

Despite high financial costs, deportations and many frustrated departure attempts, young Anglophone Cameroonians maintain high aspirations for migration. In this article, I lay out the social rationalities of aspiring migrants, as well as the economic, symbolic and informational context of their emigration decisions. On the basis of three case studies, I analyze how information on emigration is controlled, processed, and evaluated. While discourses within migration policy often posit that aspiring migrants are naïve and uninformed, I demonstrate how migration choices and strategies are developed under circumstances more complex than can be grasped by the simplistic alternative between being informed or not informed about migratory risks. Rather than to consider flows of information, I argue what matters is whether or not information is trusted and how it is interpreted. By looking at the costs and gains of migration from the standpoint of aspiring migrants, this article shifts the focus towards migration dynamics at the point of departure. © 2012 Maybritt Jill Alpes

Measurement of ϒ production in pp collisions at √s = 2.76 TeV

The production of ϒ(1S), ϒ(2S) and ϒ(3S) mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3 pb−1 collected in proton–proton collisions at a centre-of-mass energy of √s = 2.76 TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the ϒ transverse momentum and rapidity, over the ranges pT < 15 GeV/c and 2.0 < y < 4.5. The total cross-sections in this kinematic region, assuming unpolarised production, are measured to be σ (pp → ϒ(1S)X) × B ϒ(1S)→μ+μ− = 1.111 ± 0.043 ± 0.044 nb, σ (pp → ϒ(2S)X) × B ϒ(2S)→μ+μ− = 0.264 ± 0.023 ± 0.011 nb, σ (pp → ϒ(3S)X) × B ϒ(3S)→μ+μ− = 0.159 ± 0.020 ± 0.007 nb, where the first uncertainty is statistical and the second systematic

Study of the doubly charmed tetraquark T+cc

Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D0D0π+ mass spectrum just below the D*+D0 mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar T+cc tetraquark with a quark content of ccu⎯⎯⎯d⎯⎯⎯ and spin-parity quantum numbers JP = 1+. Study of the DD mass spectra disfavours interpretation of the resonance as the isovector state. The decay structure via intermediate off-shell D*+ mesons is consistent with the observed D0π+ mass distribution. To analyse the mass of the resonance and its coupling to the D*D system, a dedicated model is developed under the assumption of an isoscalar axial-vector T+cc state decaying to the D*D channel. Using this model, resonance parameters including the pole position, scattering length, effective range and compositeness are determined to reveal important information about the nature of the T+cc state. In addition, an unexpected dependence of the production rate on track multiplicity is observed

The Congress and the INA Trials, 1945-50: a Contest over the Perception of ‘Nationalist’ Politics

Whilst during the war the Indian National Army (hereafter INA) could be charged with having been the ‘puppet army’ of a fascist regime, the INA was brought firmly into the realms of anti-colonial and nationalist discourse after the war. Despite its earlier very distanced position, the Congress chose in 1945 to appropriate the trials of the INA soldiers to its own political advantage. Due to its emotive value, the INA became a symbol of national pride and anti-colonial resistance. Political engineering of the Congress can largely explain why the INA men had their biggest impact as prisoners of war, rather than as actual soldiers. Whilst the Congress dominated the perception and portrayal of the INA, the issue also helped to reinforce the ‘secular’ and ‘nationalist’ image of the Congress itself. The cause of the INA, the Congress and even the Indian ‘nation’ began to merge. The Congress by appropriating the perception and portrayal of the INA also managed to champion the very meaning of ‘nationalism’ itself. © 2007, Sage Publications India Pvt. Ltd. All rights reserved