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Associated single top production with a Z boson or a photon at large hadron colliders provides a precise determination of top flavour-changing neutral couplings. The best way to measure these couplings with the up quark at Tevatron is to…

High Energy Physics - Phenomenology · Physics 2009-10-31 F. del Aguila , J. A. Aguilar-Saavedra , Ll. Ametller

Charged Higgs bosons heavier than the top quark and decaying via $H^{\pm} \rightarrow tb$ are searched for in proton--proton collisions measured with the ATLAS experiment at $\sqrt{s}=8$ TeV corresponding to an integrated luminosity of 20.3…

High Energy Physics - Experiment · Physics 2016-03-25 ATLAS Collaboration

The production of single top quarks and top antiquarks via the $t$-channel exchange of a virtual $W$ boson is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the LHC using $140\,\mathrm{fb^{-1}}$ of ATLAS data.…

High Energy Physics - Experiment · Physics 2025-06-18 ATLAS Collaboration

We discuss the physics of single-top quark production and decay at hadron colliders, such as the Tevatron, the \tevstar~and the LHC. Our study includes how to measure the mass and the width of the top quark produced from a…

High Energy Physics - Phenomenology · Physics 2007-05-23 Douglas O. Carlson

This paper presents the observation of the electroweak production of single top quarks in the D0 detector at the Fermilab Tevatron Collider at a center-of-mass energy of 1.96 TeV. Events containing an isolated electron or muon and missing…

High Energy Physics - Experiment · Physics 2010-04-22 Liang Li

A search is presented for single top quark production in the s channel in proton-proton collisions with the CMS detector at the CERN LHC in decay modes of the top quark containing a muon or an electron in the final state. The signal is…

High Energy Physics - Experiment · Physics 2016-09-23 CMS Collaboration

In relativistic heavy ion collisions, top quarks can be produced by photon-gluon fusion when a photon from the Weizs\"acker-Williams virtual photon field of one nucleus interacts with a gluon in the other nucleus. Photoproduction with heavy…

High Energy Physics - Phenomenology · Physics 2009-01-07 Spencer R. Klein , Joakim Nystrand , Ramona Vogt

A measurement is presented of the associated production of a single top quark and a Z boson. The study uses data from proton-proton collisions at $\sqrt{s} =$ 13 TeV recorded by the CMS experiment, corresponding to an integrated luminosity…

High Energy Physics - Experiment · Physics 2018-03-07 CMS Collaboration

To probe the $Wtb$ vertex structure, top-quark and $W$-boson polarisation observables are measured from $t$-channel single-top-quark events produced in proton--proton collisions at a centre-of-mass energy of 8 TeV. The dataset corresponds…

High Energy Physics - Experiment · Physics 2017-08-25 ATLAS Collaboration

Copious production of top-antitop quark pairs at hadron colliders has enabled various probes into the properties and interactions of top quarks. Among the various presently measured observables, the forward-backward asymmetry (FBA) in t…

High Energy Physics - Phenomenology · Physics 2015-03-20 Svjetlana Fajfer , Jernej F. Kamenik , Blazenka Melic

Determination of the top-quark Yukawa couplings in the process e+ e- -> t \bar{t} Z has been studied for the high luminosity option (\int L=500\fbinver) of a linear e+e- collider. Polarization of the electron beam has been considered. The…

High Energy Physics - Phenomenology · Physics 2016-08-25 Bohdan Grzadkowski , Jacek Pliszka

This article presents measurements of all three single top-quark production channels. Detailed measurements of $t$-channel single top-quark production using data collected by the ATLAS experiment in proton--proton collisions at a…

High Energy Physics - Experiment · Physics 2017-03-08 Dominic Hirschbuehl

The top triangle moose $(TTM)$ model, which can be seen as the deconstructed version of the topcolor-assisted technicolor ($TC2$) model, predicts the existence of the charged top-pions $ \pi_{t}^{\pm}$ in low energy spectrum. In the context…

High Energy Physics - Phenomenology · Physics 2015-06-04 Chong-Xing Yue , Jing Guo , Jiao Zhang , Qing-Guo Zeng

A search is presented for the production of a single top quark via left-handed flavour-changing neutral-current (FCNC) interactions of a top quark, a gluon and an up or charm quark. Two production processes are considered: $u+g\rightarrow…

High Energy Physics - Experiment · Physics 2022-07-04 ATLAS Collaboration

We investigate the potential of single Higgs boson production at the LHC and at egamma mode of future linear electron-positron collider to probe non-standard HZgamma and Hgammagamma couplings. We consider the semi-elastic production process…

High Energy Physics - Phenomenology · Physics 2017-10-25 G. Akkaya Selcin , I. Sahin

Since the initial measurements of single-top quark production at the Tevatron in 2009, tremendous progress has been made at the LHC. While LHC Run 1 marked the beginning of a precision era for the single-top quark measurements in some of…

High Energy Physics - Experiment · Physics 2023-10-04 Jeremy Andrea , Nicolas Chanon

The production of top quark-antiquark pair events in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV is studied as a function of the transverse momentum and absolute value of the rapidity of the top quarks as well as of the invariant mass of…

High Energy Physics - Experiment · Physics 2015-04-27 D0 Collaboration

Recent results on top quark physics with the D0 experiment in pbar-p collisions at sqrt(s) = 1.8 TeV for an integrated luminosity of 125 pb**-1 are reported. The direct measurement of the top quark mass uses single lepton and dilepton…

High Energy Physics - Experiment · Physics 2007-05-23 Boaz Klima

A measurement is presented of the associated production of a single top quark and a W boson in proton-proton collisions at $\sqrt{s}=$ 13 TeV by the CMS Collaboration at the CERN LHC. The data collected corresponds to an integrated…

High Energy Physics - Experiment · Physics 2018-10-26 CMS Collaboration

Electroweak production of top quarks, the so-called single top production, is interesting both in the context of measurements of the Standard Model of Particle Physics as well as searches for new phenomena beyond that. Analyses based on…

High Energy Physics - Experiment · Physics 2015-06-05 Petra Haefner