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If no light Higgs boson exist, the interaction among the gauge bosons becomes strong at high energies (~1TeV). The effects of strong electroweak symmetry breaking (SEWSB) could manifest themselves as anomalous couplings before they give…

High Energy Physics - Phenomenology · Physics 2007-05-23 P. Krstonosic , K. Moenig , M. Beyer , E. Schmidt , H. Schroeder

This document is dedicated to recent results on the measurements of a vector boson production associated with jets (V+jets) using CMS detector experiment, with a central proton-proton (pp) collision energy of respectively 8 TeV (RunI) and…

High Energy Physics - Experiment · Physics 2016-07-07 Fengwangdong Zhang

Quartic vertices provide a window into one of the most important problems in particle physics; the understanding of electroweak symmetry breaking. I survey the various processes that have been proposed to study quartic gauge boson couplings…

High Energy Physics - Phenomenology · Physics 2009-10-28 Stephen Godfrey

$W$ bosons are produced at LHC from a forward-backward symmetric initial state. Their decay to a charged lepton and a neutrino has a strong spin analysing power. The combination of these effects results in characteristic distributions of…

High Energy Physics - Experiment · Physics 2018-01-17 Elisabetta Manca , Olmo Cerri , Nicolo Foppiani , Gigi Rolandi

The CDF collaboration's recent high-precision measurement of the $W$mass is in $7.0~\sigma$ disagreement with the Standard Model expectation. This tension will be relieved if the $W$ boson has a non-trivial right-handed gauge coupling at…

High Energy Physics - Phenomenology · Physics 2022-10-26 She-Sheng Xue

We analyze and compute, within a number of standard model (SM) extensions, the cross sections $\sigma_{A\to VV'}$ for the production of a heavy neutral pseudoscalar Higgs boson/spin-zero resonance at the LHC and its subsequent decays into…

High Energy Physics - Phenomenology · Physics 2011-03-28 Werner Bernreuther , Patrick Gonzalez , Martin Wiebusch

Event characteristics of $W$ boson production at HERA collider are untrivial and sensitive to the production mechanisms. We analyse the distributions of the four particle final state defined by the complete set of $W$ producing perturbative…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. N. Dubinin , H. S. Song

The potential of muon colliders to study a low-energy supersymmetry is addressed in the framework of the minimal supergravity model, whose predictions are first briefly surveyed. Foremost among the unique features of a muon collider is…

High Energy Physics - Phenomenology · Physics 2009-10-31 V. Barger

I introduce a model to explain the recent anomalies in the muon anomalous magnetic moment and the rare semi-leptonic $B$ meson decays. The Standard Model is extended by a $U(1)^\prime$ gauge symmetry and a complete fourth family fermions…

High Energy Physics - Phenomenology · Physics 2022-04-26 Junichiro Kawamura

We analyse diffractive electroweak vector boson production in hadronic collisions and show that the single diffractive W boson production asymmetry in rapidity is a particularly good observable at the LHC to test the concept of the flavour…

High Energy Physics - Phenomenology · Physics 2010-05-28 Krzysztof Golec-Biernat , Agnieszka Luszczak

We reexamine the improved effective vector boson approximation which is based on two-vector-boson luminosities $\mathrm{\mathbf{L}}_{\rm pol}$ for the computation of weak gauge-boson hard scattering subprocesses $V_1 V_2\to {\cal W}$ in…

High Energy Physics - Phenomenology · Physics 2016-04-06 Werner Bernreuther , Long Chen

We study diffractive vector meson photoproduction using string theory via AdS/CFT. The large $s$ behavior of the cross sections for the scattering of the vector meson $V$ on a proton is dominated by the soft Pomeron, $\sigma_V\sim…

High Energy Physics - Theory · Physics 2009-11-06 Peter G. O. Freund , Horatiu Nastase

We report the results of an extensive numerical study of the $Sp(4)$ lattice gauge theory with three (Dirac) flavors of fermion in the two-index antisymmetric representation. In the presence of (degenerate) fermion masses, the theory has an…

High Energy Physics - Lattice · Physics 2025-03-05 Ed Bennett , Deog Ki Hong , Ho Hsiao , Jong-Wan Lee , C. -J. David Lin , Biagio Lucini , Maurizio Piai , Davide Vadacchino

Models with extra gauge symmetry are well-motivated extensions of the Standard Model. In this paper, we study an extended gauge model with a heavy neutral gauge boson $Z'$ which is fermiophobic. Thus, the production of such particles can…

High Energy Physics - Phenomenology · Physics 2018-11-21 Baradhwaj Coleppa , Satendra Kumar , Agnivo Sarkar

Recent results on the production of $W$ and $Z$ gauge bosons in $p\bar{p}$ collisions at $\sqrt{s}=1.8$~TeV at the Fermilab Tevatron Collider from the \D0 and CDF experiments are reviewed. Measurements of the inclusive cross sections times…

High Energy Physics - Experiment · Physics 2014-11-17 Anthony L. Spadafora

This paper describes the measurement of the W boson mass, M_W, and decay width, Gamma_W, from the direct reconstruction of the invariant mass of its decay products in W pair events collected at a mean centre-of-mass energy of sqrt{s} =…

High Energy Physics - Experiment · Physics 2008-11-26 The OPAL Collaboration , K. Ackerstaff et al

We consider massive deformation of $U(2)$ gauge bosons in a recently developed holonomy formalism and propose a novel electroweak model. The massive gauge bosons arise from massive deformation of spinor momenta, which implies that the mass…

High Energy Physics - Theory · Physics 2013-11-20 Yasuhiro Abe

We present recent results from CDF and D0 on W and Z production cross sections, the width of the W boson, tau-e universality in W decays, trilinear gauge boson couplings, and on the observation of Z -> b bbar.

High Energy Physics - Experiment · Physics 2007-05-23 John Ellison

Insight into the electroweak (EW) and Higgs sectors can be achieved through measurements of vector boson scattering (VBS) processes. The scattering of EW bosons are rare processes that are precisely predicted in the Standard Model (SM) and…

We investigate the electroweak process $qq\to qqW$, {\it i.e.} $W$ production via $W\gamma$ and $WZ$ fusion, as a probe for nonstandard $WW\gamma$ and $WWZ$ vertices at hadron supercolliders. Triggering on events with one very forward and…

High Energy Physics - Phenomenology · Physics 2007-05-23 U. Baur , D. Zeppenfeld