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In this paper we propose a new reconstruction method to explore the low mass region in the associated production of top-quark pairs ($t\bar{t}$) with a generic scalar boson ($\phi$) at the LHC. The new method of mass reconstruction shows an…

高能物理 - 唯象学 · 物理学 2021-04-28 Duarte Azevedo , Rodrigo Capucha , Emanuel Gouveia , António Onofre , Rui Santos

After the Higgs boson discovery, a main focus at the CERN LHC has been the measurement of its properties. Observing the Higgs boson associated production with a top quark-antiquark pair ($\mathrm{t\bar{t}H}$) is particularly interesting…

高能物理 - 实验 · 物理学 2022-08-18 Angela Giraldi

The Yukawa coupling of the Higgs boson to top quarks $\text{Y}_\text{t}$ is of particular interest as the top quark plays a special role in the electroweak symmetry breaking mechanism. Any deviation from its predicted value could hint at…

高能物理 - 实验 · 物理学 2019-08-14 Christian Böser

The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs boson decays, using multiple production and decay channels with up to 4.7 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=7$ TeV…

高能物理 - 实验 · 物理学 2015-12-22 ATLAS Collaboration

We present a comprehensive overview of the vector boson fusion production and the following decay of the Higgs boson to two bottom quarks (\(H\!\to\! b\bar{b}\)), which dominates the Higgs total width yet remains experimentally challenging…

高能物理 - 唯象学 · 物理学 2025-07-31 Fikriye C I Kaya , Ibrahim Mirza

The prediction of additional Higgs bosons is one of the key features of physics beyond the Standard Model (SM) that gives rise to an extended Higgs sector. We assess the sensitivity of the Large Hadron Collider (LHC) in the high luminosity…

高能物理 - 唯象学 · 物理学 2020-10-28 H. Bahl , P. Bechtle , S. Heinemeyer , S. Liebler , T. Stefaniak , G. Weiglein

Measurements of Higgs boson production cross-sections are carried out in the diphoton decay channel using 139 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 13$ TeV collected by the ATLAS experiment at the LHC. The analysis is based on the…

高能物理 - 实验 · 物理学 2023-09-19 ATLAS Collaboration

We present a search for the production of a Higgs boson in association with a single top quark ($tHq$), using data samples collected by the CMS detector in $pp$ collisions at center-of-mass energy of 8 TeV corresponding to integrated…

高能物理 - 实验 · 物理学 2015-10-06 Kenneth Bloom

This paper presents a combined analysis of the potential of a future electron-positron collider to constrain the Higgs, top and electro-weak (EW) sectors of the Standard Model Effective Field Theory (SMEFT). The leading contributions of…

高能物理 - 唯象学 · 物理学 2020-06-29 Sunghoon Jung , Junghwan Lee , Martin Perelló , Junping Tian , Marcel Vos

The measurement of the Yukawa coupling of the top quark is one important goal of particle physics after the discovery of the Higgs boson. There are two processes that offer the possibility to directly measure the Yukawa coupling of the top…

高能物理 - 实验 · 物理学 2017-11-23 Isabel Nitsche

Improving the sensitivity to CP-violation in the Higgs sector is one of the pillars of the precision Higgs programme at the Large Hadron Collider. We present a simple method that allows CP-sensitive observables to be directly constructed…

高能物理 - 唯象学 · 物理学 2022-06-28 Akanksha Bhardwaj , Christoph Englert , Robert Hankache , Andrew D. Pilkington

In the Minimal Supersymmetric Standard Model (MSSM), the bottom Yukawa coupling of the Higgs boson can considerably deviate from its Standard Model prediction due to non-decoupling effects. We point out that the ratio of the Higgs boson…

高能物理 - 唯象学 · 物理学 2015-12-09 Mitsuru Kakizaki , Shinya Kanemura , Mariko Kikuchi , Toshinori Matsui , Hiroshi Yokoya

A measurement of the associated production of a top-quark pair with the Higgs boson ($t\bar{t}H$) in multilepton final states is presented. The analysis is based on a data sample of proton-proton collisions at $\sqrt{s}=13$ TeV recorded…

高能物理 - 实验 · 物理学 2025-10-29 Atlas Collaboration

The future Large Hadron electron Collider (LHeC) would allow collisions of an intense electron beam with protons or heavy ions at the High Luminosity-Large Hadron Collider (HL-LHC). Owing to a center of mass energy greater than a TeV and…

高能物理 - 唯象学 · 物理学 2022-10-19 Subhasish Behera , Bernard Brickwedde , Matthias Schott

A search for the production of a Higgs boson in association with a single top quark (tH) is performed using the decay $\text{H} \to \text{b}\bar{\text{b}}$. This Higgs boson production mode is sensitive to the coupling modifiers of the…

高能物理 - 实验 · 物理学 2017-11-21 Denise Mueller

The study of the properties of the scalar boson recently discovered at the LHC (ATLAS and CMS experiments) may allow us to know whether it is well described by the Standard Model. In the case where deviations from SM predictions are…

高能物理 - 唯象学 · 物理学 2015-07-22 Hermes Belusca-Maito

The production of the Higgs boson in association with a single top quark is sensitive to the relative sign of the coupling parameters describing its interaction with fermions and gauge bosons. The tHq production mode therefore provides an…

高能物理 - 实验 · 物理学 2019-08-13 Benedikt Maier

This paper studies new possibilities to directly measure a hypothetical $CP$-odd (pseudoscalar) component in the top-quark Yukawa coupling. In particular, the role of the $t{\bar t} h$ center-of-mass rest frame in the associated production…

高能物理 - 唯象学 · 物理学 2019-10-29 Andrea Ferroglia , Miguel C. N. Fiolhais , Emanuel Gouveia , António Onofre

We study the associated production of a charged Higgs and a W boson in high-energy pp collisions at the Large Hadron Collider. This is an interesting process for charged Higgs discovery, or exclusion, since the production cross section…

高能物理 - 唯象学 · 物理学 2012-04-25 R. Enberg , R. Pasechnik , O. Stål

The non-resonant production of a Higgs boson pair in association with a top-antitop quark pair ($pp\rightarrow t\bar{t}hh$) has only recently begun to be explored at the Large Hadron Collider (LHC) and provides a unique and largely…

高能物理 - 唯象学 · 物理学 2026-02-04 Ricardo D'Elia Matheus , Oscar J. P. Eboli , Rafiqul Rahaman , Aurore Savoy Navarro