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High-energy photon-proton interactions at the LHC offer interesting possibilities for the study of top properties. Using a fast simulation of a LHC-like detector, first results on the measurement of the |V_{tb}| matrix element using Wt…

High Energy Physics - Phenomenology · Physics 2010-11-11 S. Ovyn , J. de Favereau de Jeneret

We explore the parameter space for processes with fermionic flavor violation within the 2HDM type III, processes of Flavor Changing Neutral Currents are present at LO as dynamics beyond the Standard Model are included. We analyze the…

High Energy Physics - Phenomenology · Physics 2024-03-20 Melina Gómez-Bock , Wendy Gonzalez-Olivares , Martin Hentschinski , Alfonso Rosado , Sebastian Rosado-Navarro

Single top production in e+e- annihilations is searched for in data collected by the L3 detector at centre-of-mass energies from 189 to 209 GeV, corresponding to a total integrated luminosity of 634 pb-1. Investigating hadronic and…

High Energy Physics - Experiment · Physics 2012-08-27 L3 Collaboration

An overview of top physics and phenomenology at a high-energy linear collider is presented. A comprehensive study of top quark physics is possible at such a facility. The unique threshold production of top pairs would provide measurements…

High Energy Physics - Phenomenology · Physics 2007-05-23 Raymond Frey

The Wtb vertex can be probed on future colliders in the processes of single top production (LHC, pp mode, NLC, $\gamma e$ mode) and of top pair production (NLC, e^+ e^- mode). We analyse observables sensitive to anomalous Wtb couplings in…

High Energy Physics - Phenomenology · Physics 2011-09-13 E. Boos , M. Dubinin , M. Sachwitz , H. J. Schreiber

We study and analyze the recent observations of the top pair production $\sigma (p\bar p\to t \bar t)$ at TeVatron through flavor conserving and flavor violating channels ${\it via}$ vector and tensor unparticles. The unparticle sector is…

High Energy Physics - Phenomenology · Physics 2013-05-30 Mamta Dahiya , Sukanta Dutta , Rashidul Islam

Aspects of top quark physics can be studied at a future Circular Electron-Positron Collider (CEPC). In particular, Flavor-Changing Neutral Current interactions (FCNC) of the top quark can be studied even with a center-of-mass energy from…

High Energy Physics - Phenomenology · Physics 2022-02-10 M. A. Arroyo-Ureña , J. Lorenzo Díaz-Cruz , R. Gaitán , J. H. Montes de Oca , T. A. Valencia-Pérez

We investigate the effect of unparticle self-interactions at the Large Hadron Collider (LHC). Especially, we discuss the three-point correlation function, which is determined by conformal symmetry up to a constant, and study its relation to…

High Energy Physics - Phenomenology · Physics 2010-01-13 Johannes Bergstrom , Tommy Ohlsson

In this talk we present a short overview of top physics at the electron-proton (ep) colliders. Currently, the proposed ep collider is the Large Hadron Electron Collider (LHeC), which is a combination of 60 GeV electron beam and 7 TeV proton…

High Energy Physics - Phenomenology · Physics 2017-10-18 Hao Sun

The production of four top quarks is a rare process in the Standard Model that provides unique opportunities and sensitivity to Standard Model observables including potential enhancement from many popular new physics extensions. This…

High Energy Physics - Experiment · Physics 2022-12-02 Freya Blekman , Fréderic Déliot , Valentina Dutta , Emanuele Usai

This Special Issue on "Top Quark at the New Physics Frontier" is devoted to the most massive fundamental elementary particle known, the top quark. The aim is to provide a comprehensive review of the current status and prospects of top quark…

High Energy Physics - Phenomenology · Physics 2025-05-27 Efe Yazgan , Pedro Silva

The discovery of the top quark, the most massive elementary particle yet known, has given us a distinct window into investigating the physics of the Standard Model and Beyond. With a plethora of top quarks to be produced in the High…

High Energy Physics - Phenomenology · Physics 2024-10-15 Henning Bahl , Seth Koren , Lian-Tao Wang

Linear e+e- colliders provide a rich set of opportunities for top quark physics, crucial for the understanding of electroweak symmetry breaking and for the search for physics beyond the Standard Model. A ttbar threshold scan in e+e-…

High Energy Physics - Experiment · Physics 2014-12-01 Frank Simon

A search for single top quark production is performed in the full ep data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb^-1. Decays of top quarks into a b quark and a W boson with…

High Energy Physics - Experiment · Physics 2012-08-27 H1 Collaboration

The single production of leptoquarks in $e^+e^-$, $e\gamma$ and $\gamma \gamma$ linear colliders is discussed. We show that these new particles could be seen in such machines even if their mass is close to the kinematic limit. (Invited talk…

High Energy Physics - Phenomenology · Physics 2009-09-25 G. Belanger , D. London , H. Nadeau

The unparticle effects on $t\bar t$ production at the future photon collider are investigated. Distributions of $t\bar t$ invariant mass and that for transverse momentum of top quark with respect to Standard Model and unparticle production…

High Energy Physics - Phenomenology · Physics 2009-05-29 Hai-Feng Li , Hong-lei Li , Zong-Guo Si , Zhong-Juan Yang

We present new measurements of the single top quark production cross section in \ppbar collisions at $\sqrt{s} = 1.96 TeV$ using data corresponding to 5.4 \ifb of integrated luminosity collected by the {\dzero} detector at the Fermilab…

High Energy Physics - Experiment · Physics 2012-05-22 Jyoti Joshi

We present leading-order (LO) cross sections for the production of three top quarks ($tt\tb$,$t\tb\tb$) at the Large Hadron Collider (LHC). We find a total LO cross section for triple-top production in the Standard Model of $\sigma \approx…

High Energy Physics - Phenomenology · Physics 2010-12-02 Vernon Barger , Wai-Yee Keung , Brian Yencho

A search for the production of a pair of top squarks at the LHC is presented. This search targets a region of parameter space where the kinematics of top squark pair production and top quark pair production are very similar, because of the…

High Energy Physics - Experiment · Physics 2019-03-29 CMS Collaboration

I summarize here the latest top quark physics results from the ATLAS, CDF, CMS and D0 Collaborations, first discussing the top quark production and then some of the latest top quark property measurements. These results are based on up to…

High Energy Physics - Experiment · Physics 2011-11-29 Frederic Deliot