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A scan of the top quark pair production threshold at a future electron-positron collider provides the possibility for high-precision measurements of the top quark mass, and, when using two dimensional fits of the measured cross sections,…

High Energy Physics - Experiment · Physics 2020-05-25 Frank Simon

A scan of the beam energy across the top quark pair ($\mathrm{t\overline{t}}$) production threshold is part of the program of future Higgs, top, and electroweak factory projects. In this paper, we provide projections for the achievable…

High Energy Physics - Phenomenology · Physics 2025-11-26 Matteo M. Defranchis , Jorge de Blas , Ankita Mehta , Michele Selvaggi , Marcel Vos

We report on the feasibility of measuring the top Yukawa coupling in the process: $e^+e^-\to t\bar{t}H$. This measurement is crucial to test the mass generation mechanism for matter particles. Since the cross section for this process…

High Energy Physics - Experiment · Physics 2010-08-18 Ryo Yonamine , Katsumasa Ikematsu , Satoru Uozumi , Keisuke Fujii

We present a study of top quark mass measurements at the $t\bar{t}$ threshold based on CEPC. A centre-of-mass energy scan near two times of the top mass is performed and the measurement precision of top quark mass, width and $\alpha_S$ are…

High Energy Physics - Experiment · Physics 2023-04-19 Zhan Li , Xiaohu Sun , Yaquan Fang , Gang Li , Shuiting Xin , Shudong Wang , Yiwei Wang , Yuan Zhang , Hao Zhang , Zhijun Liang

Top quark production in the process $e^+e^- \rightarrow t\bar{t}$ at a future linear electron positron collider with polarized beams is a powerful tool to determine the scale of new physics. Studies at the $\ttbar$ threshold will allow for…

High Energy Physics - Experiment · Physics 2014-01-07 D. Asner , A. Hoang , Y. Kiyo , R. Pöschl , Y. Sumino , M. Vos

The prospects for electroweak precision measurements at the Future Circular Collider with electron-positron beams (FCC-ee) are discussed. The Z mass and width, as well as the value of the electroweak mixing angle, can be measured with very…

High Energy Physics - Experiment · Physics 2014-12-10 Roberto Tenchini

One of the important goals at the future $e^+e^-$ colliders is to measure the top-quark mass and width in a scan of the pair production threshold. However, the shape of the pair-production cross section at the threshold depends also on…

High Energy Physics - Experiment · Physics 2021-07-28 Kacper Nowak , Aleksander Filip Zarnecki

In this letter, we evaluate potential of linear $e^+e^-$ colliders to measure the top quark mass in radiative events and in a suitable short-distance scheme. We present a calculation of the differential cross section for production of a top…

High Energy Physics - Phenomenology · Physics 2020-03-11 Marça Boronat , Esteban Fullana , Juan Fuster , Pablo Gomis , André Hoang , Vicent Mateu , Marcel Vos , Angelika Widl

Future energy-frontier electron-positron colliders will be capable of high-precision studies of top quark properties. The measurement of the top-pair production cross section around the threshold provides access to the mass of the top quark…

High Energy Physics - Experiment · Physics 2016-11-11 Frank Simon

The design study of the Future Circular Colliders (FCC) in a 100-km ring in the Geneva area has started at CERN at the beginning of 2014, as an option for post-LHC particle accelerators. The study has an emphasis on proton-proton and…

High Energy Physics - Experiment · Physics 2015-12-02 Patrick Janot

I consider the measurement of the top-quark mass, the CKM matrix element V_{tb}, and the top-quark Yukawa coupling to the Higgs boson at the Tevatron, the LHC, and a Linear Collider. The theoretical motivations for these measurements, as…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Willenbrock

Running a future Linear Collider at the top pair threshold allows for precise measurements of the mass, the widths and the couplings of the top quark. I give a nontechnical review on recent theoretical developments and the theory status in…

High Energy Physics - Phenomenology · Physics 2009-11-11 Andre H. Hoang

The threshold scan at future lepton colliders is the most precise known method to determine the top quark mass (well below 100 MeV), a fundamental parameter of the Standard Model that co-determines the stability properties of the…

High Energy Physics - Phenomenology · Physics 2018-11-12 Jürgen Reuter , Bijan Chokoufé Nejad , Andre Hoang , Wolfgang Kilian , Maximilian Stahlhofen , Thomas Teubner , Christian Weiss

We show how a measurement of the process pp-->t tbar H + X at the LHC and a measurement of the Higgs boson branching ratios BR(H-->b bar) and BR(H-->W+W-) at a future linear electron positron collider can be combined to extract a…

High Energy Physics - Phenomenology · Physics 2009-01-07 Klaus Desch , Markus Schumacher

A realistic study of the physics reach of a t-tbar threshold scan at a future e+e- linear collider is presented. The results obtained take into account experimental and, to a large extent, theoretical systematic errors, as well as beam…

High Energy Physics - Phenomenology · Physics 2009-01-07 Manel Martinez , Ramon Miquel

A new method to measure the top-quark mass in high energetic hadron collisions is presented. We use theoretical predictions calculated at next-to-leading order accuracy in quantum chromodynamics to study the (normalized) differential…

High Energy Physics - Phenomenology · Physics 2015-06-15 Simone Alioli , Patricia Fernandez , Juan Fuster , Adrian Irles , Sven-Olaf Moch , Peter Uwer , Marcel Vos

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

25 years after the top quark's discovery, the Large Hadron Collider at CERN produces proton-proton collision data on unprecedented scales at unprecedented energies - and has heralded an era of top-quark precision measurements. The…

High Energy Physics - Experiment · Physics 2020-08-24 Knut Zoch

The top-quark mass is measured in proton-proton collisions at sqrt(s) = 7 TeV using a data sample corresponding to an integrated luminosity of 5.0 inverse femtobarns collected by the CMS experiment at the LHC. The measurement is performed…

High Energy Physics - Experiment · Physics 2012-11-20 The CMS Collaboration

The first measurement of the top quark pair ($\mathrm{t\bar{t}}$) production cross section in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV is presented. Data recorded with the CMS detector at the CERN LHC in Summer 2022, corresponding…

High Energy Physics - Experiment · Physics 2023-09-15 CMS Collaboration
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