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Related papers: Hadron collider limits on anomalous $WW\gamma$ cou…

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We present a study of anomalous electroweak gauge-boson couplings which can be measured in e+e- and gamma gamma collisions at a future linear collider like ILC. We consider the gauge-boson sector of a locally SU(2) x U(1) invariant…

High Energy Physics - Phenomenology · Physics 2009-01-07 O. Nachtmann , F. Nagel , M. Pospischil , A. Utermann

As an illustration of general principles, the $W$-boson loop contribution to the amplitude for the decay $H\to \gamma \gamma$ is calculated within a specific model for the effective lagrangian describing the anomalous gauge boson couplings.…

High Energy Physics - Phenomenology · Physics 2011-03-23 Jiri Novotny , Miroslav Stohr

Using \Zg\ candidate events collected by the CDF detector at the Tevatron Colli\der, we search for potential anomalous (non-standard-model) couplings between t\he $Z$ boson and the photon. \Zg\ couplings vanish at tree level and are…

High Energy Physics - Experiment · Physics 2011-08-22 CDF Collaboration , T. Aaltonen

The processes gamma gamma -> WW and e gamma -> nu W are sensitive to triple gauge boson interactions. Both reactions have been simulated for hadronically decaying W-bosons and the sensitivity to anomalous couplings has been estimated.

High Energy Physics - Phenomenology · Physics 2007-05-23 I. Bozovic-Jelisavcic , K. Moenig , J. Sekaric

The process $p\,p\hskip-7pt\hbox{$^{^{(\!-\!)}}$} \rightarrow W^{+} W^{-} + X \rightarrow \ell^+_1 \nu_1 \ell^-_2 \bar \nu_2 + X$ is calculated to ${\cal O}(\alpha_s)$ for general $C$ and $P$ conserving $WWV$ couplings ($V=\gamma,\, Z$).…

High Energy Physics - Phenomenology · Physics 2009-10-28 U. Baur , T. Han , J. Ohnemus

We consider a general effective Lagrangian for couplings of a Higgs boson to the top-quark to dimension-six operators including CP violation effects. Constraints on some of them are derived from the $Z\to b\bar b$ data. We study the process…

High Energy Physics - Phenomenology · Physics 2009-10-31 T. Han , T. Huang , Z. -H. Lin , J. -X. Wang , X. Zhang

We present a new method to test the Standard Model expectations at the LHC using photon-induced $WW$ production. Both $W$ decay in the main ATLAS or CMS detectors while scattered protons are measured in forward detectors. The sensitivity to…

High Energy Physics - Phenomenology · Physics 2008-11-26 O. Kepka , C. Royon

We present a general purpose Monte Carlo program for the calculation of any infrared safe observable in WGamma and ZGamma production at hadron colliders at next-to-leading order in alpha_s. We treat the leptonic decays of the W and Z-boson…

High Energy Physics - Phenomenology · Physics 2011-09-13 D. de Florian , A. Signer

We have examined the constraints on the anomalous $tq\gamma$ ($q=u,c$) couplings through the process $pp\to p\gamma p\to pWbX$ at the LHC by considering three forward detector acceptances: $0.0015< \xi < 0.5$, $0.0015< \xi <0.15$ and $0.1<…

High Energy Physics - Phenomenology · Physics 2014-07-08 M. Köksal , S. C. İnan

We present a new, model independent method for extracting bounds for the anomalous $\gamma WW$ couplings from hadron collider experiments. At the partonic level we introduce a set of three observables which are constructed from the…

High Energy Physics - Phenomenology · Physics 2011-03-23 J. Papavassiliou , K. Philippides

We present the sensitivity limits on the coefficients of a dimension-6 effective operators that parametrizes the possible effects of new physics beyond the Standard Model. Our results are based on the study of the processes $e^+ e^- \to W^+…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. de Campos , S. M. Lietti , S. F. Novaes , R. Rosenfeld

A search is presented for three additional operators that would lead to anomalous WW$\gamma$ or WWZ couplings with respect to those in the standard model. They are constrained by studying events with two vector bosons; a W boson decaying to…

High Energy Physics - Experiment · Physics 2019-12-17 CMS Collaboration

We derive bounds on Higgs and gauge--boson anomalous interactions using the LEP2 data on the production of three photons and photon pairs in association with hadrons. In the framework of $SU(2)_L \otimes U(1)_Y$ effective Lagrangians, we…

High Energy Physics - Phenomenology · Physics 2009-10-31 O. J. P. Eboli , M. C. Gonzalez-Garcia , S. M. Lietti , S. F. Novaes

We review studies of the trilinear gauge boson couplings at the Tevatron proton-antiproton collider from data collected by the CDF and D0 collaborations during the period 1992--1996. The gauge boson couplings are a fundamental prediction of…

High Energy Physics - Phenomenology · Physics 2009-09-25 John Ellison , Jose Wudka

We present final searches of the anomalous gammaWW and ZWW trilinear gauge boson couplings from WW and WZ production using lepton plus dijet final states and a combination with results from Wgamma, WW, and WZ production with leptonic final…

High Energy Physics - Experiment · Physics 2015-06-11 D0 Collaboration

We discuss the measurement of the $WWV$ ($V=\gamma,\, Z$) gauge boson couplings in present and future collider experiments. The major goals of such experiments will be the confirmation of the Standard Model (SM) predictions and the search…

High Energy Physics - Phenomenology · Physics 2009-10-30 U. Baur

The anomalous neutral triple gauge boson couplings (aNTGCs) for the Z gamma gamma and Z gamma Z vertices described by dimension-eight operators are examined through the process pp to l^{+}l^{-} gamma at the High-Luminosity Large Hadron…

High Energy Physics - Phenomenology · Physics 2020-01-08 A. Senol , H. Denizli , A. Yilmaz , I. Turk Cakir , O. Cakir

The pursuit of discovery in particle physics has always required study at the highest possible energies. Multi-TeV muon colliders, which have important advantages, offer unprecedented potential for investigating new physics beyond the…

High Energy Physics - Phenomenology · Physics 2023-07-26 S. Spor , M. Köksal

We study the anomalous triple gauge boson couplings (aTGC) in $ZW^\pm$ production in $3l$ + missing $E_T$ channel at the LHC for $\sqrt{s}=13$ TeV. We use cross sections, azimuthal asymmetry, forward-backward asymmetry, and polarization…

High Energy Physics - Phenomenology · Physics 2020-07-16 Rafiqul Rahaman , Ritesh K. Singh

The process $p \pbar \rightarrow W^{\pm}\gamma + X \rightarrow \ell^\pm \nu \gamma + X$ is calculated to ${\cal O}(\alpha_s)$ for general $CP$ conserving $WW\gamma$ couplings. At the Tevatron center of mass energy, the QCD corrections to…

High Energy Physics - Phenomenology · Physics 2009-10-22 U. Baur , T. Han , J. Ohnemus