Measurement of D*±, D± and Ds± meson production cross sections in pp collisions at √s=7 TeV with the ATLAS detector

The production of D∗±, D± and D±s charmed mesons has been measured with the ATLAS detector in pp collisions at √s= 7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb−1. The charmed mesons have been reconstructed in the range of transverse momentum 3.5 <pT(D) <100 GeV and pseudorapidity |η(D)| <2.1. The differential cross sections as a function of transverse momentum and pseudorapidity were measured for D∗± and D± production. The next-to-leading-order QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties. Using the visible D cross sections and an extrapolation to the full kinematic phase space, the strangeness-suppression factor in charm fragmentation, the fraction of charged non-strange D mesons produced in a vector state, and the total cross section of charm production at √s= 7 TeV were derived

Farm diversification in England and Wales A comparison of participants and non-participants in the Farm Diversification Grant Scheme (1988)

SIGLEAvailable from British Library Document Supply Centre- DSC:6217.4975(LU-DG-OP--21) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

A past and a future for diversification on farms? Some evidence from large-scale, commercial farms in South East England

Diversification has been identified as a common response to the agricultural crisis of the 1980s and to the changing ethos of agricultural policy in the closing decade of the 20th century. In particular, farmers operating large-scale farms have been prominent in adopting this approach, just as they were innovative across a range of farming practices in the expansion and modernisation of their agricultural production in earlier decades. Can we identify serial diversifiers within this sector of the farming community, who are disposed to react in an entrepreneurial fashion to the changing fortunes of agriculture? The paper draws on results from a survey of large-scale commercial farmers in South East England and, by examining the sequence in which various forms of diversification were adopted, identifies a temporal pattern as farmers responded to the fluctuating fortunes of the agricultural industry over the last 30 years. But has the potential for diversification been exhausted? The paper also considers future prospects for diversification within the large-scale, commercially oriented sector of the agricultural industry