9,927 research outputs found
Summary of the XXVIIth Rencontres de Blois: Particle Physics and Cosmology
This writeup summarises some of the highlights from the 2015 Rencontres de
Blois, with a compression ratio of about 100:1 relative to the original
presentations.Comment: 22 pages, 24 figures, presented at XXVIIth Rencontres de Blois,
France, 31 May - 5 June 201
A Practical Seedless Infrared Safe Cone Algorithm
This writeup highlights the infrared unsafety of the "midpoint" cone
jet-algorithm and provides a brief overview of why this is a serious issue. It
then shows how one can build a safe (seedless) cone algorithm and discusses the
potential impact on measurements.Comment: 4 pages, 4 figures. Talk presented at the XLII Rencontres de Moriond,
QCD and Hadronic Interactions, La Thuile, March 200
QCD in hadron collisions
This talk examines recent progress in collider QCD and some facets of the
interplay between these developments and searches for new particles and
phenomena at the Tevatron and LHC.Comment: 9 pages, 4 figures, contribution to the proceedings of La Thuile
2012, the XXVI Rencontres de Physique de la Vall\'ee d'Aost
Moriond 2009, QCD and High Energy Interactions: Theory Summary
These proceedings provide a brief summary of the theoretical topics that were
covered at Moriond QCD 2009, including non-perturbative QCD, perturbative QCD
at colliders, a small component of physics beyond the standard model and
heavy-ion collisions.Comment: 13 pages, 7 figures; v2 adds a reference; v3 includes small changes
to tex
Infrared safe definition of jet flavour
Though it is widely taken for granted that it makes sense to separately
discuss quark and gluon jets, normal jet algorithms lead to a net parton-level
jet flavour that is infrared (IR) unsafe. This writeup illustrates the problem
and explains how the kt algorithm can be modified to provide an IR safe
parton-level flavour. As well as being of use in theoretical calculations that
require a projection of higher-order contributions onto a flavour-channel of
the lowest order, jet-flavour algorithms also open up the prospect of
significant improvements in the accuracy of heavy-quark jet predictions.Comment: 4 pages, 3 figures, to appear in the proceedings of XLIst Rencontres
de Moriond QCD and High Energy Hadronic Interactions, La Thuile, Aosta
Valley, Italy, March 2006 and (in abridged form) in the proceedings of DIS
2006, Tsukuba, Japan, April 200
CAESAR: Computer Automated Resummations
This talk gives a brief discussion of the motivations and principles behind
computer automated expert semi-analytical resummation (CAESAR) for QCD final
states.Comment: 4 pages; talk presented at DIS 2004, Strbske Pleso, Slovakia, April
200
Recent developments in perturbative QCD
A brief overview of some recently active topics in perturbative QCD,
including: string-inspired recursion techniques at tree level; recursion
approaches and automation of standard techniques for 1-loop calculations; the
status of NNLO jet calculations; and non-trivial structures that appear in
higher-order calculations.Comment: 9 pages, 1 figure. Invited talk at the XIV International Workshop on
Deep Inelastic Scattering (DIS 2006), April 2006, Tsukuba, Japa
Perturbative QCD for the LHC
These proceedings discuss some of the highlights of recent research in
perturbative QCD as it relates to the LHC. Topics covered include the new
generation of Monte Carlo event generators, the revolution that is occurring in
NLO calculations, progress towards NNLO predictions and developments in the
definition and use of jets.Comment: 14 pages, writeup of invited plenary talk at ICHEP, Paris, July 201
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