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C. Neu

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DOI: 10.1109/tns.2002.1039615
2002
Cited 159 times
Online track processor for the CDF upgrade
A trigger track processor, called the eXtremely Fast Tracker (XFT), has been designed for the Collider Detector at Fermilab (CDF) upgrade. This processor identifies high-transverse-momentum (> 1.5 GeV/c) charged particles in the new central outer tracking chamber for CDF II. The XFT design is highly parallel to handle the input rate of 183 Gb/s and the output rate of 44 Gb/s. The processor is pipelined and reports the result for a new event every 132 ns. The processor uses three stages: hit classification, segment finding, and segment linking. The pattern recognition algorithms for the three stages are implemented in programmable logic devices (PLDs) which allow in situ modification of the algorithm at any time. The PLDs reside on three different types of modules. The complete system has been installed and commissioned at CDF II. An overview of the track processor and performance in CDF Run II are presented.
2011
Cited 97 times
Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables
This Report summarizes the results of the first 10 months' activities of the LHC Higgs Cross Sections Working Group. The main goal of the working group was to present the status-of-art on Higgs Physics at the LHC integrating all new results that have appeared in the last few years. The Report is more than a mere collection of the proceedings of the general meetings. The subgroups have been working in different directions. An attempt has been made to present the first Report from these subgroups in a complete and homogeneous form. The subgroups' contributions correspondingly comprise the main parts of the Report. A significant amount of work has been performed in providing higher-order corrections to the Higgs-boson cross sections and pinning down the theoretical uncertainty of the Standard Model predictions. This Report comprises explicit numerical results on total cross sections, leaving the issues of event selection cuts and differential distributions to future publications. The subjects for further study are identified.
2012
Cited 72 times
Handbook of LHC Higgs Cross Sections: 2. Differential Distributions
This Report summarises the results of the second year's activities of the LHC Higgs Cross Section Working Group. The main goal of the working group was to present the state of the art of Higgs Physics at the LHC, integrating all new results that have appeared in the last few years. The first working group report Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables (CERN-2011-002) focuses on predictions (central values and errors) for total Higgs production cross sections and Higgs branching ratios in the Standard Model and its minimal supersymmetric extension, covering also related issues such as Monte Carlo generators, parton distribution functions, and pseudo-observables. This second Report represents the next natural step towards realistic predictions upon providing results on cross sections with benchmark cuts, differential distributions, details of specific decay channels, and further recent developments.
DOI: 10.48550/arxiv.1101.0593
2011
Cited 45 times
Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables
This Report summarizes the results of the first 10 months' activities of the LHC Higgs Cross Sections Working Group. The main goal of the working group was to present the status-of-art on Higgs Physics at the LHC integrating all new results that have appeared in the last few years. The Report is more than a mere collection of the proceedings of the general meetings. The subgroups have been working in different directions. An attempt has been made to present the first Report from these subgroups in a complete and homogeneous form. The subgroups' contributions correspondingly comprise the main parts of the Report. A significant amount of work has been performed in providing higher-order corrections to the Higgs-boson cross sections and pinning down the theoretical uncertainty of the Standard Model predictions. This Report comprises explicit numerical results on total cross sections, leaving the issues of event selection cuts and differential distributions to future publications. The subjects for further study are identified.
DOI: 10.48550/arxiv.1201.3084
2012
Cited 14 times
Handbook of LHC Higgs Cross Sections: 2. Differential Distributions
This Report summarises the results of the second year's activities of the LHC Higgs Cross Section Working Group. The main goal of the working group was to present the state of the art of Higgs Physics at the LHC, integrating all new results that have appeared in the last few years. The first working group report Handbook of LHC Higgs Cross Sections: 1. Inclusive Observables (CERN-2011-002) focuses on predictions (central values and errors) for total Higgs production cross sections and Higgs branching ratios in the Standard Model and its minimal supersymmetric extension, covering also related issues such as Monte Carlo generators, parton distribution functions, and pseudo-observables. This second Report represents the next natural step towards realistic predictions upon providing results on cross sections with benchmark cuts, differential distributions, details of specific decay channels, and further recent developments.
DOI: 10.1093/jsxmed/qdac004
2023
Sexual dysfunction, depression, and marital dissatisfaction among Brazilian couples
Health professionals treating sexual dysfunction and relational dissatisfaction recognize that they are multifactorial phenomena, and depression can be bidirectionally associated with both.The purpose of this study was to investigate sexual dysfunction in heterosexual couples in relation to the quality of their marital relationship and depression symptoms.The sample consisted of 100 heterosexual couples recruited in Brazil. Both partners of each couple completed the Golombok-Rust Inventory of Sexual Satisfaction and the Golombok-Rust Inventory of Marital Satisfaction, which were translated and adapted, and the Beck Depression Inventory, which was validated for the Brazilian population. Both partners completed their questionnaires separately, and the couple's surveys were linked to preserve conjugal data for dyadic analysis. The Actor-Partner Interdependence Model was used to understand how sexual dysfunction in couples is related to depression and relationship quality among and between partners.Sexual dysfunction was found to be strongly associated with dissatisfaction in the relationship (husbands, β = 0.57, P < 0.001; wives, β = 0.60, P < 0.001), and a positive association was found between depressive symptoms and marital dissatisfaction (husbands, β = .32, P < .001; wives β = .40, P < .001).The results suggest that it is important for health professionals to be aware of the dyadic impact of struggles with both sex and the relationship and the presence of depression symptoms in patients who seek care for sexual complaints or depression and who are in a marital relationship.The different results found for men and women may shed light on the biopsychosocial dimensions of human sexuality. When treated as a purely physical experience, sex is myopic. In this study we demonstrated psychosocial aspects associated with gender and sexuality, and the partner's variables were found to have a greater impact on women than they did on the men. A limitation of this study is that the sample is not generalizable as it is not demographically representative of all socioeconomic groups in Brazil. Furthermore, the participants in this sample did not have clinical levels of depression, so the results cannot be extended to couples in which one or both spouses have depressive disorder.It was found that sexual dysfunction is strongly associated with the quality of the couple relationship, and that the quality of relationship plays a mediating role between depression and marital quality, especially for the women.
DOI: 10.1109/nssmic.2015.7581951
2015
Cited 4 times
Studies of wavelength-shifting liquid filled quartz capillaries for use in a proposed CMS calorimeter
Studies have been done and continue on the design and construction of a Shashlik detector using Radiation hard quartz capillaries filled with wavelength shifting liquid to collect the scintillation light from LYSO crystals for use as a calorimeter in the Phase II CMS upgrade at CERN. The work presented here focuses on the studies of the capillaries and liquids that would best suit the purpose of the detector. Comparisons are made of various liquids, concentrations, and capillary construction techniques will be discussed.
DOI: 10.1109/23.790707
1999
Cited 11 times
Online track processor for the CDF upgrade
A trigger track processor is being designed for the CDF upgrade. This processor identifies high momentum (P/sub T/>1.5 GeV/c) charged tracks in the new central outer tracking chamber for CDF II. The track processor is called the eXtremely Fast Tracker (XFT). The XFT design is highly parallel to handle the input fate of 183 Gbits/sec and output rate of 44 Gbits/sec. The processor is pipelined and reports the results for a new event every 132 ns. The processor uses three stages, hit classification, segment finding, and segment linking. The pattern recognition algorithms for the three stages are implemented in programmable logic devices (PLDs) which allow for in-situ modification of the algorithm at any time. The PLDs reside on three different types of modules. Prototypes of each of these modules have been designed and built, and are presently undergoing testing. An overview of the track processor and results of testing are presented.
2006
Cited 3 times
CDF b-tagging: Measuring efficiency and false positive rate
The CDF experiment has developed several high p{sub T} b-jet identification tools for the Run II physics program at the Tevatron. Herein we describe in detail one such b-tagging tool that exploits the long- lifetime of the b quark by identifying decay vertices significantly displaced from the primary interaction point. The b-tag efficiency is extracted from a b enriched data sample; the method is described, including a discussion of the important systematic effects. The data-driven measurement of the false positive tag rate is also described, as well as an explanation of how the per-jet false positive rate is used to predict the background contribution to the selected sample. Finally we conclude with a discussion of issues that have proven critical for b-tagging at CDF and should be given attention as we prepare b-tagging tools for LHC experiments.
DOI: 10.48550/arxiv.0806.0825
2008
W/Z + Jets and W/Z + Heavy Flavor Jets at the Tevatron
Studies of the production of W/Z + jets are important for a variety of reasons. W/Z + inclusive jets is a valuable high statistics sample that allows one to probe the validity of predictions from perturbative Quantum Chromodynamics (pQCD) at both leading and next-to-leading order. W/Z + heavy flavor jets (those originating from b or c production) is a significant background to top and Higgs at the Tevatron and will play an important role at the LHC as well. Herein the latest Tevatron results on these production mechanisms are reviewed with an emphasis on comparison of data results to the latest theoretical models.
2016
A Highly-Segmented, Radiation Tolerant Shashlik Electromagnetic Calorimeter
2015
Physics of the Higgs Boson: Developing Broad Understanding in the Post-Discovery Era
DOI: 10.22323/1.224.0119
2016
Search for ttH in Run 1 at the LHC
With the discovery in 2012 of a Higgs boson at the LHC, the focus of the Higgs physics campaigns at the ATLAS and CMS experiments has transitioned from the search for the Higgs to the pursuit of the complete characterization of this new particle.This is an essential step that is necessary in the determination of whether this is the Higgs boson of the standard model, or a component of some other, more exotic explanation of the fundamental world.Principal among these characterizations is the understanding of the interaction strength, or coupling, between this Higgs boson and the other known fundamental particles; among these couplings, the largest and arguably the most important is that between the Higgs and the top quark, the most massive of the known fundamental particles.The only direct probe of this coupling is through the observation of Higgs boson production in association with top quarks at the LHC.In this talk, the search strategy and current status will be described, focusing on the results from the 2010-2012 Run 1 of the LHC, with also an eye toward future studies in Run 2. The observation of this process is one of the highest-priority aspects of the current LHC physics program.
DOI: 10.48550/arxiv.0809.1407
2008
W/Z + Light Flavor Jets and W/Z + Heavy Flavor Jets at the Tevatron
Collider signatures containing bosons and jets are particularly interesting. Recent theoretical effort has been devoted to determining predictions of W/Z + multiple parton production; the high statistics sample of W/Z + jets events collected at the Tevatron is a valuable testbed for probing the validity of these calculations. The final state containing a Z or W boson and one or more b-jets is a promising Higgs search channel at the Tevatron and could be a window to new physics at the LHC. These searches benefit from a deep understanding of the production of W/Z + heavy flavor jets which constitutes a significant background to the more exotic sources of this signature. Herein the latest Tevatron results on these production mechanisms are reviewed with an emphasis on comparison of data results to the latest theoretical models.
2008
W/Z + Jets and W/Z + Heavy Flavor Jets at the Tevatron
Studies of the production of W{sup {+-}}/Z+ jets are important for a variety of reasons. Herein the latest Tevatron results on these production mechanisms are reviewed with an emphasis on comparison of data results to the latest theoretical models.
2009
Status of the CDF Physics Program
DOI: 10.22323/1.024.0015
2007
How to estimate b-tag efficiency and false positive rate?
The CDF experiment has developed several high p T b-jet identification tools for the Run II physics program at the Tevatron.Herein we describe in detail one such b-tagging tool that exploits the long-lifetime of the b quark by identifying decay vertices significantly displaced from the primary interaction point.The b-tag efficiency is extracted from a b enriched data sample; the method is described, including a discussion of the important systematic effects.The data-driven measurement of the false positive tag rate is also described, as well as an explanation of how the per-jet false positive rate is used to predict the background contribution to the selected sample.Finally we conclude with a discussion of issues that have proven critical for b-tagging at CDF and should be given attention as we prepare b-tagging tools for LHC experiments.
DOI: 10.48550/arxiv.2009.06754
2020
Benchmarking Machine Learning Techniques with Di-Higgs Production at the LHC
Many domains of high energy physics analysis are starting to explore machine learning techniques. Powerful methods can be used to identify and measure rare processes from previously insurmountable backgrounds. One of the most profound Standard Model signatures still to be discovered at the LHC is the pair production of Higgs bosons through the Higgs self-coupling. The small cross section of this process makes detection very difficult even for the decay channel with the largest branching fraction ($hh\rightarrow b\bar{b}b\bar{b}$). This paper benchmarks a variety of approaches (boosted decision trees, various neural network architectures, semi-supervised algorithms) against one another to catalog a few of the various techniques available to high energy physicists as the era of the HL-LHC approaches.
2006
CDF b-tagging: Measuring efficiency and false positive rate
2003
A Search for the Higgs Boson in proton - antiproton collisions at center-of-mass energy of 1.8 TeV
DOI: 10.2172/1419209
2003
A Search for the Higgs boson in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.8-TeV
on the production of new gauge bosons at the 95% Confidence level. The models that have been studied include a $$Z^{\prime}$$ with standard model like couplings, several superstring inspired E6 models, and the Alternative Left-Right Model. By combining both$$\mu^+ \mu^-$$ and ee decay modes a lower limit of 690 GeV is placed on the existence of a $$Z^{\prime}$$ with standard model like couplings.
2003
A search for the Higgs boson in proton-antiproton collisions at s = 1.8 TeV
2003
Search for Higgs Production in Association with a W Boson Using a Neural Network
2000
Track Segment Finding with the CDFII Online Track Processor