22,903 research outputs found
Review of Recent Tevatron Jet, W/Z+Jet and Heavy-flavor Production Results
This document reviews several recent measurements at the Fermilab Tevatron,
including the cross sections of inclusive jet, dijet production, the cross
sections of electroweak boson (W or Z) production in association with inclusive
or heavy-flavor (b or c) jets, and b-jet shapes. In addition, searches for new
physics using the dijet angular distributions are discussed. These analyses are
based on integrated luminosities of 0.3--2.5/fb of p-pbar collisions at
\sqrt{s}=1.96 TeV, collected with the CDF and D0 detectors. The results
directly test the leading order and next-to leading order calculations of
perturbative quantum chromodynamics and provide constraints on the parton
distribution functions, gluon-splitting contribution, and physics beyond the
standard model.Comment: 10 pages, 7 figures, Proceedings for Photon 200
Searches for New Physics at the Tevatron in Photon and Jet Final States
We present the results of searches for non-standard model phenomena in photon
and jet final states. These searches use data from integrated luminosities of
0.7--2.7/fb of p-pbar collisions at sqrt(s)=1.96 TeV, collected with the CDF
and D0 detectors at the Fermilab Tevatron. No significant excess in data has
been observed. We report limits on the parameters of several models, including:
large extra dimension, compositeness, leptoquarks, and supersymmetry.Comment: Proceedings for the Moriond 2009 EW session 7 pages, 6 figure
Search for Higgs at CDF
We present the results on the searches for the SM and the non-SM Higgs boson
production in ppbar collisions at sqrt(s)=1.96 TeV with the CDF detector at the
Fermilab Tevatron. Using data corresponding to 300--700pb-1, we search for the
Higgs boson in various production and decay channels. No signal is observed,
therefore, we set upper limits on the production cross-section times branching
fraction as a function of the Higgs boson mass.Comment: to appear in Proceedings of SUSY06, the 14th International Conference
on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine,
California, 12-17 June 200
Search for Anomalous Production of Photon, b-jet, and Missing Transverse Energy at CDF
We report the results of two signature-based searches for new physics using
1.9- 2.0 fb-1 of data collected at the CDF experiment. Both analyses look in
events containing a photon, a b-tagged jet, and missing transverse energy. The
first search requires an additional jet. The second search requires an extra
electron or muon. No significant excess of events over the Standard Model
prediction is observed. We also describe the "CES/CPR" method which is used to
estimate the amount of mis-identified photons.Comment: Poster at the 34th International Conference on High Energy Physics,
ICHEP08, Philadelphia, USA, July 2008. 3 pages, LaTeX, 2 eps figure
Market Shares, Consumer Ignorance and the Reciprocal Termination Charges
The aim of this paper is to study different regulatory effects on termination charges and social welfare. We employ a framework with a fixed network and two mobile networks competing in a market to study the following regulatory regimes: collusive and social welfaremaximising reciprocity, uniform termination charge, asymmetric regulation, and direct calling price. We incorporate the idea of partial consumer ignorance when calling to a mobile user and allow the network operator to discriminate between on-net and off-net calls by setting differential calling prices. Compared to the uniform termination charge and asymmetric regulation, it is shown in this paper that the regulator can improve social welfare, without too much intervention, by imposing reciprocity on termination charges. We also find that with stronger consumer ignorance the regulator is more capable of improving social welfare. Further we show that, depending upon the extent of consumer ignorance, direct regulation of calling prices may be a welfare-improving alternative over regulation of termination charges.Telecommunications; Consumer ignorance; Termination Charges, Regulation
Multi-turn Inference Matching Network for Natural Language Inference
Natural Language Inference (NLI) is a fundamental and challenging task in
Natural Language Processing (NLP). Most existing methods only apply one-pass
inference process on a mixed matching feature, which is a concatenation of
different matching features between a premise and a hypothesis. In this paper,
we propose a new model called Multi-turn Inference Matching Network (MIMN) to
perform multi-turn inference on different matching features. In each turn, the
model focuses on one particular matching feature instead of the mixed matching
feature. To enhance the interaction between different matching features, a
memory component is employed to store the history inference information. The
inference of each turn is performed on the current matching feature and the
memory. We conduct experiments on three different NLI datasets. The
experimental results show that our model outperforms or achieves the
state-of-the-art performance on all the three datasets
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