A Study Of Parton Distribution Functions With The Use Of Photon Jet Event Kinematics In P Bar P Collisions At Radical

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Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

A Study Of Parton Distribution Functions With The Use Of Photon Jet Event Kinematics In P Bar P Collisions At Radical

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Author :
language : en
Publisher:
Release Date : 2005

A Study Of Parton Distribution Functions With The Use Of Photon Jet Event Kinematics In P Bar P Collisions At Radical written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.

We have measured the leading jet pseudorapidity distribution in photon + jet events selected from the inclusive direct photon event sample. The data are from p[bar p] collisions at [radical]s = 1.8 TeV recorded with CDF in the 1992--1993 run. This measurement has been used to study the behavior of current parton distribution sets in selected kinematic regions. The parton distribution sets CTEQ2M and MRSD0 are currently favored by this measurement.

A Study Of Parton Distribution Functions With The Use Of Photon Jet Event Kinematics In Pbar P Collisions At Radicals

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Author :
language : en
Publisher:
Release Date : 1994

A Study Of Parton Distribution Functions With The Use Of Photon Jet Event Kinematics In Pbar P Collisions At Radicals written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.

Government Reports Announcements Index

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Author :
language : en
Publisher:
Release Date : 1995

Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.

Properties Of Events Containing A Photon And Several Jets Seen In P Bar P Collisions At Radical S

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Author :
language : en
Publisher:
Release Date : 1993

Properties Of Events Containing A Photon And Several Jets Seen In P Bar P Collisions At Radical S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

The CDF detector is used to investigate the properties of events containing a photon and two jets. The rate of photon +2 jet production is higher than the theoretical calculation, but the shape of the events agrees with QCD predictions.

Properties Of Events Containing A Photon And Several Jets Seen In P Bar P Collisions At Square Root S

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Author :
language : en
Publisher:
Release Date : 1993

Properties Of Events Containing A Photon And Several Jets Seen In P Bar P Collisions At Square Root S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.

The CDF detector is used to investigate the properties of events containing a photon and two jets. The rate of photon +2 jet production is higher than the theoretical calculation, but the shape of the events agrees with QCD predictions.

Study Of P Bar P Collisions That Contain Leptons A Photon And A B Quark Using The Cdf Ii Detector

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Author :
language : en
Publisher:
Release Date : 2011

Study Of P Bar P Collisions That Contain Leptons A Photon And A B Quark Using The Cdf Ii Detector written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

We present a search for anomalous production of the signature lepton + photon + b-quark + missing transverse energy (?̀6ETb) produced in $par{p}$ collisions at √ s = 1.96 TeV using 6.0 fb-1 of data taken with the CDF detector in Run II at the Tevatron. In addition to this signature-based search, we present a closely-related search for top pair production with an additional radiated photon, t$ar{t}$?. We find 85 ?̀6ETb events versus an expectation of 99.1±9.3 events. High-statistics control samples are used to evaluate a low-energy photon ? 2 cut. Additionally requiring the events to contain at least three jets, have a total transverse energy of 200 GeV, and that the photon candidate passes the ? 2 cut, we observe 30 t$ar{t}$? candidate events versus an expectation from non-top Standard Model (SM) sources of 13.0 ± 2.1 Assuming the difference between the observed number and the predicted non-top SM total is due to top production, we measure the tt$ar{γ}$ cross section to be 0.18 ± 0.08 pb. We also measure the ratio of the t$ar{t}$? cross section to the t$ar{t}$cross section to be 0.024 ± 0.009, which compares well with a SM prediction of 0.024 ± 0.013.

Study Of Double Parton Scattering In Photon 3 Jets Final State

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Author : You-Hao Chang
language : en
Publisher: Springer
Release Date : 2017-01-20

Study Of Double Parton Scattering In Photon 3 Jets Final State written by You-Hao Chang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-20 with Science categories.

This book mainly focuses on the study of photon + 3 jets final state in Proton-Proton Collisions at √s = 7TeV, searching for patterns of two (or more) distinct hard scatterings in the same collision, i.e the so-called Double Parton Scattering (DPS). A new method by using Monte Carlo generators was performed and provides higher order corrections to the description of the Single Parton Scattering (SPS) background. Further it is investigated whether additional contributions from DPS can improve the agreement between the measured data and the Monte Carlo predictions. The current theoretical uncertainties related to the SPS background are found to be larger than expectation. At the same time a rich set of DPS-sensitive measurements is reported for possible further interpretation.

Diphoton Production In P Bar P Collisions At Radical

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Author :
language : en
Publisher:
Release Date : 2001

Diphoton Production In P Bar P Collisions At Radical written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

We present measurements of the inclusive[gamma][gamma] cross section (as a function of invariant mass and photon[epsilon][sub[tau]]), in p[bar p] collisions at[radical]s= 1.8 TeV, made using the D0 detector at the Fermilab Tevatron collider. The next is leading order (NLO) QCD prediction is found to be in good agreement with the data. The effects of invariant mass and diphoton balance cuts, which test the next-to-leading order contributions to the cross section, are investigated. We also compare the distribution of[kappa][sub[tau]] between samples of diphotons and highly electromagnetic jets, and find that the NLO QCD prediction models the shape of the[gamma][gamma][kappa][sub[tau]] distribution quite well.

A Search For New Physics In Photon Lepton Events In Proton Antiproton Collisions At Radical S

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Author :
language : en
Publisher:
Release Date : 2003

A Search For New Physics In Photon Lepton Events In Proton Antiproton Collisions At Radical S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.

We present the results of a search in p[bar p] collisions at[radical]s= 1.8 TeV for anomalous production of events containing a photon with large transverse energy and a lepton (e or[mu]) with large transverse energy, using 86 pb[sup -1] of data collected at the Collider Detector at Fermilab during the 1994-95 collider run at the Fermilab Tevatron. The presence of large missing transverse energy (E[sub T]), additional photons, or additional leptons in these events is also analyzed. The results are consistent with standard model expectations, with the possible exception of photon-lepton events with large E[sub T], for which the probability of a statistical fluctuation of the standard model expectation up to and above the observed level is 0.7%.