Measurement Of The Zz Production Cross Section And Limits To The Anomalous Triple Gauge Couplings With Forward Electrons With The Atlas Detector
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Measurement Of The Zz Production Cross Section And Limits To The Anomalous Triple Gauge Couplings With Forward Electrons With The Atlas Detector
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Author : Deywis Moreno-Lopez
language : en
Publisher:
Release Date : 2014
Measurement Of The Zz Production Cross Section And Limits To The Anomalous Triple Gauge Couplings With Forward Electrons With The Atlas Detector written by Deywis Moreno-Lopez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Measurement Of The Zz Production Cross Section And Limits On Anomalous Neutral Triple Gauge Couplings With The Atlas Detector
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Author : Nicholas Charles Edwards
language : en
Publisher:
Release Date : 2013
Measurement Of The Zz Production Cross Section And Limits On Anomalous Neutral Triple Gauge Couplings With The Atlas Detector written by Nicholas Charles Edwards and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Colliders (Nuclear physics) categories.
Measurement Of The Pp U2192 Zz Production Cross Section And Constraints On Anomalous Triple Gauge Couplings In Four Lepton Final States At U221a S
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Author :
language : en
Publisher:
Release Date : 2014
Measurement Of The Pp U2192 Zz Production Cross Section And Constraints On Anomalous Triple Gauge Couplings In Four Lepton Final States At U221a 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 2014 with categories.
A measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton–proton collisions at √s = 8 TeV are presented. The analysis is based on a data sample, corresponding to an integrated luminosity of 19.6 fb−1, collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ → lll'l', where l = e,? and l' = e,?,?. The measured total cross section ?(pp → ZZ) = 7.7 ± 0.5 (stat)-0.4+0.5 (syst) ± 0.4 (theo) ± 0.2 (lumi) pb, for both Z bosons produced in the mass range 60 msubZ/sub 120 GeV, is consistent with standard model predictions. Differential cross sections are measured and well described by the theoretical predictions. As a result, the invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZ? couplings at the 95% confidence level: –0.004 fsub4/subsupZ/sup 0.004, –0.004 fsub5/subsupZ/sup 0.004, –0.005 fsub4
A Measurement Of The Zz L L Vv Cross Section At 8 Tev And Limits On Anomalous Neutral Triple Gauge Couplings With The Atlas Detector
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Author : Steven Kaneti
language : en
Publisher:
Release Date : 2015
A Measurement Of The Zz L L Vv Cross Section At 8 Tev And Limits On Anomalous Neutral Triple Gauge Couplings With The Atlas Detector written by Steven Kaneti and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Measurements Of Zz Production Cross Section Using Four Lepton Events And Constraints On Anomalous Triple Gauge Couplings At Squareroot S
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Author : Usama Hussain
language : en
Publisher:
Release Date : 2020
Measurements Of Zz Production Cross Section Using Four Lepton Events And Constraints On Anomalous Triple Gauge Couplings At Squareroot S written by Usama Hussain and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Studies of four-lepton production in proton-proton collisions, pp → (Z/[gamma]*)(Z/[gamma]*)→ 4l, where l = e or [mu], using data collected during 2016-2018 (Run II) are presented. The dataset corresponds to an integrated luminosity of 137 fb^(−1) at a center-of-mass energy of 13 TeV, collected by the CMS detector at the LHC. All reported measurements use the 2l2l' final states, where l,l' = e or [mu]. The total ZZ cross section for all events with two Z bosons in the mass range 60-120 GeV is measured and found to be [sigma](pp → ZZ) = 17.2 ± 0.3 (stat) ± 0.5 (syst) ± 0.4 (theo) ± 0.3 (lumi) pb. Differentialcross sections are measured as functions of a number of kinematic observables. Allthese results agree with standard model predictions. Searches for anomalous triplegauge couplings are performed, and the four-lepton invariant mass distributions areused to set the most stringent limits to date on a number of parameters affectingneutral gauge boson interactionsl
Measurement Of The Pp 2 Zz Production Cross Section And Constraints On Anomalous Triple Gauge Couplings In Four Lepton Final States At Arrow
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Author :
language : en
Publisher:
Release Date : 2014
Measurement Of The Pp 2 Zz Production Cross Section And Constraints On Anomalous Triple Gauge Couplings In Four Lepton Final States At Arrow written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
A measurement of the inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton-proton collisions at [arrow]" = 8 TeV are presented. The analysis is based on a data sample, corresponding to an integrated luminosity of 19.6 fb−1, collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ 2!lll'l', where l = e, [mu] and l' = e, [mu], [tau]. The measured total cross section [sigma](pp 2!ZZ) = 7.7 " 0.5 (stat)-0.4+0.5 (syst) " 0.4 (theo) " 0.2 (lumi) pb, for both Z bosons produced in the mass range 60
Measurement Of Z Production And Search For Anomalous Triple Gauge Couplings In Proton Antiproton Collisions At U221a S
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Author :
language : en
Publisher:
Release Date : 2008
Measurement Of Z Production And Search For Anomalous Triple Gauge Couplings In Proton Antiproton Collisions At U221a 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 2008 with categories.
The author presents a measurement of p$ar{p}$ → Z? + X → e+e-? + X production using proton-antiproton collisions data collected at the Collider Detector at Fermilab at a center of mass energy of 1.96 TeV. Z? production provides a direct test of the triple neutral gauge couplings. A measurement of Z? production cross section and search for anomalous ZZ? and Z?? couplings are presented. The data presented are from 1.1 fb-1 of p$ar{p}$ integrated luminosity collected at the CDF Detector. Electrons from Z decays are selected with Et > 20 Gev. Photons (Et > 7 GeV) are required to be well-separated from the electrons. There are 390 ee? candidate events found with 1.1 fb-1 of data, compared to the SM prediction of 375.3 ± 25.2 events. The Standard Model prediction for the cross section for p$ar{p}$ → e+e-? + X production at √s = 1.96 TeV is 4.5 ± 0.4 pb. The measured cross section is 4.7 ± 0.6 pb. The cross section and kinematic distributions of the ee? events are in good agreement with theoretical predictions. Limits on the ZZ? and Z?? couplings are extracted using the photon Et distribution of ee? events with mee? > 100 GeV/c2. These are the first limits measured using CDF Run II data. These limits provide important test of the interaction of the photon and the Z boson.
Measurement Of The Z Production Cross Section In Pp Collisions At 8 Tev And Search For Anomalous Triple Gauge Boson Couplings
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Author :
language : en
Publisher:
Release Date : 2015
Measurement Of The Z Production Cross Section In Pp Collisions At 8 Tev And Search For Anomalous Triple Gauge Boson Couplings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
The cross section for the production of Z? in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb-1. Events with an oppositely-charged pair of muons or electrons together with an isolated photon are selected. Furthermore, the differential cross section as a function of the photon transverse momentum is measured inclusively and exclusively, where the exclusive selection applies a veto on central jets. These observed cross sections are compatible with the expectations of next-to-next-to-leading-order quantum chromodynamics. As a result, limits on anomalous triple gauge couplings of ZZ? and Z?? are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson.
Measurement Of The Wz Cross Section And Triple Gauge Couplings In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2012
Measurement Of The Wz Cross Section And Triple Gauge Couplings In P Bar P Collisions At Sqrt 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 2012 with categories.
This Letter describes the current most precise measurement of the WZ production cross section as well as limits on anomalous WWZ couplings at a center-of-mass energy of 1.96 TeV in proton-antiproton collisions. The WZ candidates are reconstructed from decays containing three charged leptons and missing energy from a neutrino, where the charged leptons are either electrons or muons. Using data collected by the CDF II detector (7.1 fb−1 of integrated luminosity), 64 candidate events are observed with the expected background contributing 8 ± 1 events. The measured total cross section?(p{bar p} → WZ) = 3.93{sub -0.53}{sup +0.60}(stat){sub -0.46}{sup +0.59}(syst) pb is in good agreement with the standard model prediction of 3.50 ± 0.21. The same sample is used to set limits on anomalous WWZ couplings.
Measurement Of The Z Gamma Production Cross Section In Pp Collisions At 8 Tev And Search For Anomalous Triple Gauge Boson Couplings
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Author :
language : en
Publisher:
Release Date : 2015
Measurement Of The Z Gamma Production Cross Section In Pp Collisions At 8 Tev And Search For Anomalous Triple Gauge Boson Couplings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
The cross section for the production of Z[gamma] in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb−1. Events with an oppositely-charged pair of muons or electrons together with an isolated photon are selected. The differential cross section as a function of the photon transverse momentum is measured inclusively and exclusively, where the exclusive selection applies a veto on central jets. The observed cross sections are compatible with the expectations of next-to-next-to-leading-order quantum chromodynamics. Limits on anomalous triple gauge couplings of ZZ[gamma] and Z[gamma][gamma] are set that improve on previous experimental results obtained with the charged lepton decay modes of the Z boson.