Converting an existing dairy to the Missouri 75-cow grazing dairy model (2011)

This guide examines the financial feasibility of creating a new Missouri grass-based dairy by converting an existing conventional dairy to a 75-cow intensive rotational grazing dairy. The model for this conversion assumes the farm buyer is able to purchase a dairy without paying anything extra for the fact that it contains an obsolete double-4 herringbone parlor. Using a low-cost retrofit of the parlor, the new dairy producer is able to increase labor efficiency without committing a large amount of additional capital. This model allows the new dairy producer to overcome the capital threshold that is a barrier to entry for most new smaller dairies. This dairy is designed to be located in an area where winter weather conditions and soil types allow cattle to be housed outside all year

Starting a 150-cow intensive rotational grazing dairy (2011)

This guide examines the financial feasibility of starting a 150-cow intensive rotational grazing dairy in Missouri. The model dairy described is designed to be a pasture-based dairy to use labor and capital as efficiently as possible. This dairy is designed to be located in an area where winter weather conditions and soil types allow cattle to be housed outside all year

Starting a 75-cow intensive rotational grazing dairy (2011)

This guide examines the financial feasibility of starting a 75-cow intensive rotational grazing dairy in Missouri. The model dairy described is designed to be a pasture-based dairy to use labor and capital as efficiently as possible. This dairy is designed to be located in an area where winter weather conditions and soil types allow cattle to be housed outside all year

Starting a 300-cow intensive rotational grazing dairy (2011)

This guide examines the financial feasibility of starting a 300-cow intensive rotational grazing dairy in Missouri. The model dairy described is designed to be a pasture-based dairy to use labor and capital as efficiently as possible. This dairy is designed to be located in an area where winter weather conditions and soil types allow cattle to be housed outside all year

Introduction to the economics of pasture-based dairying (2011)

The following series of minimalist, pasture-based dairy model farms (75-cow, 150-cow, 300-cow and 600-cow) was developed to help dairy producers understand the economics of these dairy systems. Each model is customized to reflect an operational system typical of a dairy farm and herd of four different sizes. These models were developed using assumptions, costs and benchmarking information from existing Missouri pasture-based dairies and from experts in the dairy industry. Data presented here reflect costs and conditions as of October 2010. While these farms were customized specific to Missouri, they could be adapted to conditions elsewhere

Economics of pasture-based dairies (2012)

"Agriculture.""Dairy grazing.""Dairy grazing publication series: This publication is one in a series about operating and managing a pasture-based dairy. Although these publications often refer to conditions in Missouri, many of the principles and concepts described may apply to operations throughout the United States. A list of the publications in this series is available online at http://extension.missouri.edu/m168.""Revised from M168, Dairy Grazing Manual, by Joe Horner, Dairy Economist, Commercial Agriculture Program, Ryan Milhollin, Project Manager, Commercial Agriculture Program, Wayne Prewitt, West Central Region Agriculture Business Specialist.""This publication replaces Chapter 14, Economics of a Pasture-Based Dairy, in MU Extension publication M168, Dairy Grazing Manual. Original authors: Stacey A. Hamilton, Greg J. Bishop-Hurley and Ron Young, University of Missouri."New 2/12/Web

Measurement of the top quark mass using the matrix element technique in dilepton final states

We present a measurement of the top quark mass in pp¯ collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider. The data were collected by the D0 experiment corresponding to an integrated luminosity of 9.7  fb−1. The matrix element technique is applied to tt¯ events in the final state containing leptons (electrons or muons) with high transverse momenta and at least two jets. The calibration of the jet energy scale determined in the lepton+jets final state of tt¯ decays is applied to jet energies. This correction provides a substantial reduction in systematic uncertainties. We obtain a top quark mass of mt=173.93±1.84  GeV

Journal Staff

We present the first measurements of the differential cross section d sigma/dp(T)(gamma) for the production of an isolated photon in association with at least two b-quark jets. The measurements consider photons with rapidities vertical bar y(gamma)vertical bar < 1.0 and transverse momenta 30 < p(T)(gamma) < 200 GeV. The b-quark jets are required to have p(T)(jet) > 15 GeVand vertical bar y(jet)vertical bar < 1.5. The ratio of differential production cross sections for gamma + 2 b-jets to gamma + b-jet as a function of p(T)(gamma) is also presented. The results are based on the proton-antiproton collision data at root s = 1.96 TeV collected with the D0 detector at the Fermilab Tevatron Collider. The measured cross sections and their ratios are compared to the next- to- leading order perturbative QCD calculations as well as predictions based on the k(T)- factorization approach and those from the sherpa and pythia Monte Carlo event generators

Measurement of the photon+b+b-jet production differential cross section in ppˉp\bar{p} collisions at \sqrt{s}=1.96~\TeV

We present measurements of the differential cross section dsigma/dpT_gamma for the inclusive production of a photon in association with a b-quark jet for photons with rapidities |y_gamma|< 1.0 and 30<pT_gamma <300 GeV, as well as for photons with 1.5<|y_gamma|< 2.5 and 30< pT_gamma <200 GeV, where pT_gamma is the photon transverse momentum. The b-quark jets are required to have pT>15 GeV and rapidity |y_jet| < 1.5. The results are based on data corresponding to an integrated luminosity of 8.7 fb^-1, recorded with the D0 detector at the Fermilab Tevatron $p\bar{p}$ Collider at sqrt(s)=1.96 TeV. The measured cross sections are compared with next-to-leading order perturbative QCD calculations using different sets of parton distribution functions as well as to predictions based on the kT-factorization QCD approach, and those from the Sherpa and Pythia Monte Carlo event generators.Comment: 10 pages, 9 figures, submitted to Phys. Lett.

Search for Higgs bosons decaying to tautau pairs in ppbar collisions at sqrt(s) = 1.96 TeV

We present a search for the production of neutral Higgs bosons decaying into tautau pairs in ppbar collisions at a center-of-mass energy of 1.96 TeV. The data, corresponding to an integrated luminosity of 5.4 fb-1, were collected by the D0 experiment at the Fermilab Tevatron Collider. We set upper limits at the 95% C.L. on the product of production cross section and branching ratio for a scalar resonance decaying into tautau pairs, and we then interpret these limits as limits on the production of Higgs bosons in the minimal supersymmetric standard model (MSSM) and as constraints in the MSSM parameter space.Comment: 7 pages, 5 figures, submitted to PL