Jet Physics at CDF Run II.

Jet Physics at CDF Run II.
Author: A. Safonov
Publisher:
Total Pages: 4
Release: 2004
Genre:
ISBN:

The latest results on jet physics at CDF are presented and discussed. Particular attention is paid to studies of the inclusive jet cross section using 177 pb{sup -1} of Run II data. Also discussed is a study of gluon and quark jet fragmentation.

Jet Physics in Run 2 at CDF.

Jet Physics in Run 2 at CDF.
Author: R. Field
Publisher:
Total Pages: 5
Release: 2005
Genre:
ISBN:

New CDF Run 2 results on the inclusive jet cross section (K{sub T} algorithm) and the b-jet cross section (MidPoint algorithm) are presented and compared with theory. We also study the ''underlying event'' by using the direction of the leading jet to isolate regions of {eta}-{phi} space that are very sensitive to the ''beam-beam'' remnants and to multiple parton interactions.

Jet Physics at CDF.

Jet Physics at CDF.
Author:
Publisher:
Total Pages:
Release: 2004
Genre:
ISBN:

Jets have been studied by the CDF Collaboration [1] as a means of searching for new particles and interactions, testing a variety of perturbative QCD predictions, and providing input for the global parton distribution function (PDF) fits. Unless otherwise indicated below, the jets were reconstructed using a cone algorithm [2] with cone radius R = 0.7 from data taken at the Fermilab Tevatron collider in Run 2, 2001-2003, with [radical]s = 1.96 TeV. Central jets, in the pseudorapidity range relative to fixed detector coordinates 0.1

Top Quark Physics at Hadron Colliders

Top Quark Physics at Hadron Colliders
Author: Arnulf Quadt
Publisher: Springer Science & Business Media
Total Pages: 166
Release: 2007-08-16
Genre: Science
ISBN: 3540710604

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.

Jet physics in ALICE

Jet physics in ALICE
Author: Constantin Loizides
Publisher: ibidem-Verlag / ibidem Press
Total Pages: 180
Release: 2012-02-03
Genre: Science
ISBN: 3838255577

The ALICE experiment is one of the experiments currently prepared for the Large Hadron Collider (LHC) at CERN, Geneva, starting operation end of 2007. ALICE is dedicated to the research on nucleus-nucleus collisions at ultra-relativistic energies, which addresses the properties of strongly interacting matter under varying conditions of high density and temperature. The conditions provided at the LHC allow significant qualitative improvement with respect to previous studies. In particular, energetic probes, light quarks and gluons, will be abundantly produced. These probes might be identified by their fragmentation into correlated particles, so called jets, of high enough energy to allow full reconstruction of jet properties; even in the underlying heavy-ion environment.Understanding the dependence of high-energy jet production and fragmentation influenced by the dense medium created in the collision region is an open field of active research. Generally, one expects energy loss of the probes due to medium-induced gluon radiation. It is suggested that hadronization products of these, rather soft gluons may be contained within the jet emission cone, resulting in a modification of the characteristic jet fragmentation, as observed via longitudinal and transverse momentum distributions with respect to the direction of the initial parton, as well as of the multiplicity distributions arising from the jet fragmentation. Particle momenta parallel to the jet axis are softened (jet quenching), while transverse to it increased (transverse heating). The present thesis studies the capabilities of the ALICE detectors to measure these jets and quantifies obtainable rates and the quality of jet reconstruction, in both proton-proton and lead-lead collisions at the LHC. In particular, it is addressed whether modification of the jet fragmentation can be detected within the high-particle-multiplicity environment of central lead-lead collisions.

Run II Jet Physics: Proceedings of the Run II QCD and Weak Boson Physics Workshop

Run II Jet Physics: Proceedings of the Run II QCD and Weak Boson Physics Workshop
Author:
Publisher:
Total Pages:
Release: 2001
Genre:
ISBN:

The Run II jet physics group includes the Jet Algorithms, Jet Shape/Energy Flow, and Jet Measurements/Correlations subgroups. The main goal of the jet algorithm subgroup was to explore and define standard Run II jet finding procedures for CDF and D0. The focus of the jet shape/energy flow group was the study of jets as objects and the energy flows around these objects. The jet measurements/correlations subgroup discussed measurements at different beam energies;[alpha][sub S] measurements; and LO, NLO, NNLO, and threshold jet calculations. As a practical matter the algorithm and shape/energy flow groups merged to concentrate on the development of Run II jet algorithms that are both free of theoretical and experimental difficulties and able to reproduce Run I measurements. Starting from a review of the experience gained during Run I, the group considered a variety of cone algorithms, and K[sub T] algorithms. The current understanding of both types of algorithms, including calibration issues, are discussed in this report along with some preliminary experimental results. The jet algorithms group recommends that CDF and D0 employ the same version of both a cone algorithm and a K[sub T] algorithm during Run II. Proposed versions of each type of algorithm are discussed. The group also recommends the use of full 4-vector kinematic variables whenever possible. The recommended algorithms attempt to minimize the impact of seeds in the case of the cone algorithm and preclustering in the case of the K[sub T] algorithm. Issues regarding precluster definitions and merge/split criteria require further study.

Measurement of the W Plus N Inclusive Jets Cross-Section at CDF Run II.

Measurement of the W Plus N Inclusive Jets Cross-Section at CDF Run II.
Author:
Publisher:
Total Pages: 506
Release: 2012
Genre:
ISBN:

In this thesis we present the study of the production of the W boson in association with hadronic jets at the Collider Detector at Fermilab (CDF). Along with the electroweak properties the W boson, we examine jet kinematic variables with the aim of studying predictions of perturbative quantum chromodynamics. We derive several di erential crosssections as a function of the inclusive jet multiplicity and the transverse momenta of each jet. In this analysis, we are using 2.8 fb-1 of data and consider both the electron and muon lepton nal states for the W boson decay.

Hadron Collider Physics 2005

Hadron Collider Physics 2005
Author: Mario Campanelli
Publisher: Springer Science & Business Media
Total Pages: 360
Release: 2007-08-17
Genre: Science
ISBN: 3540328416

This book gathers the proceedings of The Hadron Collider Physics Symposia (HCP) 2005, and reviews the state-of-the-art in the key physics directions of experimental hadron collider research. Topics include QCD physics, precision electroweak physics, c-, b-, and t-quark physics, physics beyond the Standard Model, and heavy ion physics. The present volume serves as a reference for everyone working in the field of accelerator-based high-energy physics.

IFAE 2006

IFAE 2006
Author: G. Montagna
Publisher: Springer Science & Business Media
Total Pages: 365
Release: 2007-04-30
Genre: Science
ISBN: 8847005302

This book collects the Proceedings of the Workshop "Incontri di Fisica delle Alte Energie (IFAE) 2006, Pavia, 19-21 Aprile 2006". The workshop is the fifth edition of a series of workshops on fundamental research in particle physics, as carried on at the most important international laboratories, and possible fallouts in medical and technological applications. Researches in this field aim at identifying the most elementary constituents of matter.

Fundamental Interactions - Proceedings Of The 22nd Lake Louise Winter Institute

Fundamental Interactions - Proceedings Of The 22nd Lake Louise Winter Institute
Author: Alan Astbury
Publisher: World Scientific
Total Pages: 487
Release: 2007-12-28
Genre: Science
ISBN: 9814472506

This proceedings volume contains the latest results from the field of particle physics. The contributions cover the current status of all the Large Hadron Collider (LHC) experiments, the implications of the LHC for cosmology, and the search for dark matter and nuclear astrophysics. It also includes work on the current status of the future International Linear Collider (ILC).