Measurement Of The Wz Cross Section And Triple Gauge Couplings In P Bar P Collisions At Sqrt S
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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 Wz Rightarrow Ell Nu Ell Ell Cross Section And Limits On Anomalous Triple Gauge Couplings In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2010
Measurement Of The Wz Rightarrow Ell Nu Ell Ell Cross Section And Limits On Anomalous 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 2010 with categories.
The standard model (SM) of particle physics has been extensively tested in the past three decades and is found to be in excellent agreement with experimental observations. It is widely assumed, however, that the SM is only a low energy approximation of a more general theory. Therefore, any significant deviation from the SM predictions yields information on the nature of a more fundamental theory. Production of WZ pairs is the least studied diboson process within the SM, as it is a charged final state and can only be produced at hadron colliders. A detailed study of this process probes the electroweak sector of the SM. In addition, searches for new phenomena in the production of heavy gauge boson pairs are interesting, as many extensions of the SM predict 1-4 additional heavy gauge bosons that can decay into a WZ boson pairs.
Electroweak Physics At Lep And Lhc
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Author : Arno Straessner
language : en
Publisher: Springer
Release Date : 2010-03-14
Electroweak Physics At Lep And Lhc written by Arno Straessner and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-03-14 with Science categories.
During more than 10 years, from 1989 until 2000, the LEP accelerator and the four LEP experiments, ALEPH, DELPHI, L3 and OPAL, have taken data for a large amount of measurements at the frontier of particle physics. The main outcome is a thorough and successful test of the Standard Model of electroweak interactions. Mass and width of the Z and W bosons were measured precisely, as well as the Z and photon couplings to fermions and the couplings among gauge bosons. The rst part of this work will describe the most important physics results of the LEP experiments. Emphasis is put on the properties of the W boson, which was my main research eld at LEP. Especially the precise determination of its mass and its couplings to the other gauge bosons will be described. Details on physics effects like Colour Reconnection and Bose-Einstein Correlations in W-pair events shall be discussed as well. A conclusive summary of the current electroweak measurements, including low-energy results, as the pillars of possible future ndings will be given. The important contributions from Tevatron, like the measurement of the top quark and W mass, will round up the present day picture of electroweak particle physics. This is an open access book.
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.
Nuclear Data
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Author :
language : en
Publisher:
Release Date : 1996
Nuclear Data written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Nuclear physics categories.
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 1986
Government Reports Annual 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 1986 with Government reports announcements & index categories.
Preprints And Reports On Display In The Cern Library
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Author : European Council for Nuclear Research. Library
language : en
Publisher:
Release Date :
Preprints And Reports On Display In The Cern Library written by European Council for Nuclear Research. Library and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Nuclear physics categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1993
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 1993 with Science categories.
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.
A Measurement Of The Z Gamma Cross Section And Limits On Anomalous Triple Gauge Couplings At Square Root Of S
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Author :
language : en
Publisher:
Release Date : 2012
A Measurement Of The Z Gamma Cross Section And Limits On Anomalous Triple Gauge Couplings At Square Root Of 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.
A study of the properties of the Z$\gamma$ diboson system is presented using 5.0 fb$^{-1}$ of proton-proton collision data from the LHC using the CMS detector. The pp $\rightarrow Z(\rightarrow\mu \mu) \gamma$ and pp $\rightarrow Z(\rightarrow e e) \gamma$ production cross sections are measured within the fiducial volume of CMS with a combined measurement of $\sigma_{\ell\ell\gamma} = 5.33 \pm 0.08 ~\text{(stat.)} \pm 0.25 ~\text{(syst.)} \pm 0.12 ~\text{(lumi.)}$ pb that is in good agreement with Standard Model predictions. Upper limits on the neutral anomalous triple gauge couplings set are the most stringent limits on these couplings to date, with allowed regions: $-0.010