Results 1 to 10 of about 616 (122)

Two-loop infrared singularities in the production of a Higgs boson associated with a top-quark pair

Journal of High Energy Physics, 2022
The associated production of a Higgs boson and a top-quark pair is important for probing the Yukawa coupling of the top quark, and calls for better theoretical modeling.
Jiaqi Chen, Chichuan Ma, Guoxing Wang, Li Lin Yang, Xiaoping Ye   +4 more
doaj   +1 more source

Higgs properties and fourth generation leptons

Physical Review D, 2011
It is possible that there are additional vector-like generations where the quarks have mass terms that do not originate from weak symmetry breaking, but the leptons only get mass through weak symmetry breaking. We discuss the impact that the new leptons have on Higgs boson decay branching ratios and on the range of allowed Higgs masses in such a model (
Ishiwata, Koji, Wise, Mark B.
openaire   +4 more sources

Analytic approximations of 2 → 2 processes with massive internal particles

Journal of High Energy Physics, 2023
We consider two-loop corrections to 2 → 2 scattering processes with massive particles in the final state and massive particles in the loop. We discuss the combination of analytic expansions in the high-energy limit and for small Mandelstam variable t ...
Joshua Davies, Go Mishima, Kay Schönwald, Matthias Steinhauser   +3 more
doaj   +1 more source

Exploring Higgs-photon production at the LHC

Journal of High Energy Physics, 2023
We have investigated the signal for physics beyond the Standard Model via Higgs plus photon final state, hitherto unobserved at the LHC, in the framework of Standard Model Effective Field Theory.
Tisa Biswas, Anindya Datta
doaj   +1 more source

Deep learning to improve the sensitivity of Di-Higgs searches in the 4b channel

Journal of High Energy Physics
The study of di-Higgs events, both resonant and non-resonant, plays a crucial role in understanding the fundamental interactions of the Higgs boson.
Cheng-Wei Chiang, Feng-Yang Hsieh, Shih-Chieh Hsu, Ian Low   +3 more
doaj   +1 more source

The scale of new physics from the Higgs couplings to γγ and γZ

Journal of High Energy Physics, 2022
Measuring the Higgs couplings accurately at colliders is one of the best routes for finding physics Beyond the Standard Model (BSM). If the measured couplings deviate from the SM predictions, then this would give rise to energy-growing processes that ...
Fayez Abu-Ajamieh
doaj   +1 more source

Room‐Temperature Skyrmionic Synapse in 2D Ferromagnet Fe3GaTe2 Operating via Collective Spin Texture Transformation

Advanced Materials, EarlyView.
We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Jixiang Huang, Tongji Zhu, PeiYu Cai, Xiaoming Ma, Zhen Wang, Ruifu Zhang, Yi Hao, Jingdi Lu, Liubing He, Jun Xu, Yuejie Zhang, Wanjun Jiang, Jing Tao, Shiming Lei, Pavel Parchinskiy, Jing Teng, Lingfei Wang, Wei Niu, Elton J.G. Santos, Xiaoqian Zhang, Peng Li   +20 more
wiley   +1 more source

Reconstruction of boosted and resolved multi-Higgs-boson events with symmetry-preserving attention networks

Journal of High Energy Physics
The production of multiple Higgs bosons at the CERN LHC provides a direct way to measure the trilinear and quartic Higgs self-interaction strengths as well as potential access to beyond the standard model effects that can enhance production at large ...
Haoyang Li, Marko Stamenkovic, Alexander Shmakov, Michael Fenton, Darius Shih-Chieh Chao, Kaitlyn Maiya White, Caden Mikkelsen, Jovan Mitić, Cristina Mantilla Suarez, Melissa Quinnan, Greg Landsberg, Harvey Newman, Pierre Baldi, Daniel Whiteson, Javier Duarte   +14 more
doaj   +1 more source

Unbinned multivariate observables for global SMEFT analyses from machine learning

Journal of High Energy Physics, 2023
Theoretical interpretations of particle physics data, such as the determination of the Wilson coefficients of the Standard Model Effective Field Theory (SMEFT), often involve the inference of multiple parameters from a global dataset.
Raquel Gomez Ambrosio, Jaco ter Hoeve, Maeve Madigan, Juan Rojo, Veronica Sanz   +4 more
doaj   +1 more source

Properties of charged Higgs bosons

Physical Review D, 1979
In theories with more scalar multiplets than the minimal Weinberg-Salam model, there will exist charged physical Higgs particles, in addition to the neutral Higgs particle. We examine the theory and phenomenology of such a situation as a guide for future experimental searches.
Donoghue, John, Li, Ling Fong
openaire   +2 more sources