Forward-Backward Asymmetry of Top Quark Pair Productionn at the Fermilab Tevatron

Forward-Backward Asymmetry of Top Quark Pair Productionn at the Fermilab Tevatron
Author :
Publisher :
Total Pages : 297
Release :
ISBN-10 : OCLC:951619247
ISBN-13 :
Rating : 4/5 (47 Downloads)

Synopsis Forward-Backward Asymmetry of Top Quark Pair Productionn at the Fermilab Tevatron by :

This dissertation presents the final measurements of the forward-backward asymmetry (AFB) of top quark-antiquark pair events (t t- ) at the Collider Detector at Fermilab (CDF) experiment. The t t- events are produced in proton{anti-proton collisions with a center of mass energy of 1:96 TeV during the Run II of the Fermilab Tevatron. The measurements are performed with the full CDF Run II data (9.1 fb-1) in the final state that contain two charged leptons (electrons or muons, the dilepton final state), and are designed to con rm or deny the evidence-level excess in the AFB measurements in the final state with a single lepton and hadronic jets (lepton+jets final state) as well as the excess in the preliminary measurements in the dilepton final state with the first half of the CDF Run II data. New measurements include the leptonic AFB (AlFB), the lepton-pair AFB (All FB) and the reconstructed top AFB (At t FB). Each are combined with the previous results from the lepton+jets final state measured at the CDF experiment. The inclusive Al FB, All FB, and At t FB measured in the dilepton final state are 0.072 ± 0.060, 0.076 ± 0.081, and 0.12 ± 0.13, to be compared with the Standard Model (SM) predictions of 0.038 ± 0.003, 0.048 ± 0.004, and 0.010 ± 0.006, respectively. The CDF combination of AlFB and At t FB are 0.090+0:028 -0.026, and 0.160 ± 0.045, respectively. The overall results are consistent with the SM predictions.

Top Quark Physics at Hadron Colliders

Top Quark Physics at Hadron Colliders
Author :
Publisher : Springer Science & Business Media
Total Pages : 166
Release :
ISBN-10 : 9783540710608
ISBN-13 : 3540710604
Rating : 4/5 (08 Downloads)

Synopsis Top Quark Physics at Hadron Colliders by : Arnulf Quadt

This will be a required acquisition text for academic libraries. More than ten years after its discovery, still relatively little is known about the top quark, the heaviest known elementary particle. This extensive survey summarizes and reviews top-quark physics based on the precision measurements at the Fermilab Tevatron Collider, as well as examining in detail the sensitivity of these experiments to new physics. Finally, the author provides an overview of top quark physics at the Large Hadron Collider.

Physics at the Terascale

Physics at the Terascale
Author :
Publisher : John Wiley & Sons
Total Pages : 437
Release :
ISBN-10 : 9783527634972
ISBN-13 : 3527634975
Rating : 4/5 (72 Downloads)

Synopsis Physics at the Terascale by : Ian Brock

Written by authors working at the forefront of research, this accessible treatment presents the current status of the field of collider-based particle physics at the highest energies available, as well as recent results and experimental techniques. It is clearly divided into three sections; The first covers the physics -- discussing the various aspects of the Standard Model as well as its extensions, explaining important experimental results and highlighting the expectations from the Large Hadron Collider (LHC). The second is dedicated to the involved technologies and detector concepts, and the third covers the important - but often neglected - topics of the organisation and financing of high-energy physics research. A useful resource for students and researchers from high-energy physics.

New Era For Cp Asymmetries: Axions And Rare Decays Of Hadrons And Leptons

New Era For Cp Asymmetries: Axions And Rare Decays Of Hadrons And Leptons
Author :
Publisher : World Scientific
Total Pages : 354
Release :
ISBN-10 : 9789813233096
ISBN-13 : 9813233095
Rating : 4/5 (96 Downloads)

Synopsis New Era For Cp Asymmetries: Axions And Rare Decays Of Hadrons And Leptons by : Ikaros I Bigi

This book is dedicated to Lev Okun, who passed away in November 2015. He was a true pioneer in probing fundamental dynamics.The book has two objectives. First is to showcase Okun's impact for decades since 1963, when he published his remarkable book Weak Interaction of Elementary Particles. Second is to present the current progress of our scientific community in the studies of our Universe. New directions and possible future developments are discussed, often using the past as a guide. The authors mostly focus on CP asymmetries in the transitions of hadrons and leptons, but they also discuss their rare decays, and talk about axions and supersymmetry, and possible connections with dark matter, extra dimensions, baryogenesis and multiverse.This book is suitable for readers who know quantum mechanics and quantum field theories in general.

Symmetry in Particle Physics

Symmetry in Particle Physics
Author :
Publisher : MDPI
Total Pages : 166
Release :
ISBN-10 : 9783039438013
ISBN-13 : 3039438018
Rating : 4/5 (13 Downloads)

Synopsis Symmetry in Particle Physics by : Michal Hnatič

Particle physics is a science about the symmetries of our world. The Standard Model is the fundamental theory of microworld. Particle dynamics in the Standard Model obeys strict symmetry laws with explicit experimental consequences. Priority problems of particle physics based on the Standard Model are more accurate theoretical predictions, experimental measurements and data analysis, proof of existence or non-existence of supersymmetry, top quark properties, Higgs boson, exotic quark states, and physics of neutrinos. In this collection of articles, many of these problems are discussed. We recommend this book for students, graduate students, and scientists working in the field of high energy physics.

Particles And Fields - Proceedings Of The Vi Mexican School

Particles And Fields - Proceedings Of The Vi Mexican School
Author :
Publisher : World Scientific
Total Pages : 386
Release :
ISBN-10 : 9789814549790
ISBN-13 : 9814549797
Rating : 4/5 (90 Downloads)

Synopsis Particles And Fields - Proceedings Of The Vi Mexican School by : Juan Carlos D'olivo

This textbook provides a calculus-based introduction to economics. Students blessed with a working knowledge of the calculus will find that this text facilitates their study of the basic analytical framework of economics. The textbook examines a wide range of micro and macro topics, including prices and markets, equity versus efficiency, Rawls versus Bentham, accounting and the theory of the firm, optimal lot size and just in time, monopoly and competition, exchange rates and the balance of payments, inflation and unemployment, fiscal and monetary policy, IS-LM analysis, aggregate demand and supply, speculation and rational expectations, growth and development, exhaustible resources and over-fishing. While the content is similar to that of conventional introductory economics textbook, the assumption that the reader knows and enjoys the calculus distinguishes this book from the traditional text.

Supersymmetry and the Unification of Fundamental Interactions

Supersymmetry and the Unification of Fundamental Interactions
Author :
Publisher : AIP Conference Proceedings (Nu
Total Pages : 670
Release :
ISBN-10 : UCSD:31822036967735
ISBN-13 :
Rating : 4/5 (35 Downloads)

Synopsis Supersymmetry and the Unification of Fundamental Interactions by : Deog Ki Hong

This annual SUSY conference has become the world's largest international meeting devolted to new ideas in high energy physics. The main subject of the conference is theoretical and phenomenological aspects of supersymmetric theories, and dark matter and dark energy, and other comological connections. New, interesting results from various experimental groups are increasingly presented at the conference as well. With roughly 200 plenary and parallel presentations, SUSY08 will likely deliver energy and enthusiasm of both theorists and experimentalists who are searching the frontier of high energy physics.

Top Quark Pair Production Cross Section and Forward-Backward Asymmetry at the Tevatron

Top Quark Pair Production Cross Section and Forward-Backward Asymmetry at the Tevatron
Author :
Publisher :
Total Pages : 4
Release :
ISBN-10 : OCLC:727355918
ISBN-13 :
Rating : 4/5 (18 Downloads)

Synopsis Top Quark Pair Production Cross Section and Forward-Backward Asymmetry at the Tevatron by :

We present recent results on top quark pair production cross section and forward-backward asymmetry at the Tevatron. Three new cross section measurements from CDF and one new measurement from DO are presented that utilize the full dataset available. A new DO top cross section combination gives a ttbar production cross section of sigma ttbar = 7.83 + 0.46-0.45 (stat) + 0.64-0.53 (syst) +-0.48 (lumi). The new CDF cross section combination for ttbar production is found to be 7.0 +- 0.3 (stat) +- 0.4 (syst) +- 0.4 (lumi) pb giving a total uncertainty of 9%, very close to the that of the current best theoretical predictions. It is important to measure the top cross section in as many different channels as possible and investigate their compatibility. This is useful as new physics might show up differently in the different channels. Thus any significant discrepancy could be a sign of new physics. Three new measurements of the forward-backward asymmetry are also presented. The two CDF measurements unfold the observed asymmetry back to parton level in order to directly compare the values obtained with theoretical predictions. The DO measurement is not unfolded and therefore does not depend on the specific method used for unfolding.

Energy Research Abstracts

Energy Research Abstracts
Author :
Publisher :
Total Pages : 834
Release :
ISBN-10 : MSU:31293010869224
ISBN-13 :
Rating : 4/5 (24 Downloads)

Synopsis Energy Research Abstracts by :