4,639 research outputs found
Global Parton Distributions for the LHC Run II
We review the next generation global PDF sets: NNPDF3.0, MMHT14 and CT14. We
describe the global datasets, particularly the new data from LHC Run 1, recent
developments in QCD theory and PDF methodology, improvements in combination and
delivery, and future prospects for parton determination at Run 2.Comment: 15 pages, 11 figures; talk given at La Thuile, 3rd March 2015;
updated reference
High Energy Resummation of Drell-Yan Processes
We present a computation of the inclusive Drell-Yan production cross-section
in perturbative QCD to all orders in the limit of high partonic centre-of-mass
energy. We compare our results to the fixed order NLO and NNLO results in MSbar
scheme, and provide predictions at NNNLO and beyond. Our expressions may be
used to obtain fully resummed results for the inclusive cross-section.Comment: 18 pages, 5 figures: version to be published in NP
Unital hyperarchimedean vector lattices
We prove that the category of unital hyperarchimedean vector lattices is
equivalent to the category of Boolean algebras. The key result needed to
establish the equivalence is that, via the Yosida representation, such a vector
lattice is naturally isomorphic to the vector lattice of all locally constant
real-valued continuous functions on a Boolean (=compact Hausdorff totally
disconnected) space. We give two applications of our main result.Comment: 15 pages. Submitted pape
Momentum Conservation at Small x
We discuss how momentum conservation is implemented in perturbative
computations based on expansions of anomalous dimensions appropriate at small
. We show that for any given choice of coefficient functions there
always exists a factorization scheme where the gluon is defined in such a way
that momentum is conserved at next to leading order.Comment: 11 pages, plain TeX with harvma
An Improved Splitting Function for Small x Evolution
We summarize our recent result for a splitting function for small x evolution
which includes resummed small x logarithms deduced from the leading order BFKL
equation with the inclusion of running coupling effects. We compare this
improved splitting function with alternative approaches.Comment: 5 pages, 2 figures, presented by G.A.at DIS200
Double Asymptotic Scaling '96
We review recent HERA data on the structure function F_2 at small x and large
Q^2. We show that the salient features of the data are revealed by comparing
them to the double asymptotic scaling behaviour which F_2 is predicted to
satisfy in perturbative QCD.Comment: 5 pages, LaTeX with espcrc2.sty (included), 11 figures included by
epsfi
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