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In this work we demonstrate that significant gains in performance and data efficiency can be achieved in High Energy Physics (HEP) by moving beyond the standard paradigm of sequential optimization or reconstruction and analysis components.…

高能物理 - 实验 · 物理学 2024-01-26 Matthias Vigl , Nicole Hartman , Lukas Heinrich

We present a semi-supervised fine-tuning framework for foundation models that utilises mutual information decomposition to address the challenges of training for a limited amount of labelled data. Our approach derives two distinct lower…

机器学习 · 计算机科学 2025-05-19 Guillaume Quétant , Pavlo Molchanov , Slava Voloshynovskiy

Recently, template-based (TB) and template-free (TF) molecule graph learning methods have shown promising results to retrosynthesis. TB methods are more accurate using pre-encoded reaction templates, and TF methods are more scalable by…

机器学习 · 计算机科学 2022-02-17 Zhangyang Gao , Cheng Tan , Lirong Wu , Stan Z. Li

An overview of tools and methods for the reconstruction of high-boost top quark decays at the LHC is given in this report. The focus is on hadronic decays, in particular an overview of the current status of top quark taggers in physics…

高能物理 - 实验 · 物理学 2019-08-15 Emanuele Usai

Light, electrically charged vector-like `leptons' with order one Yukawa couplings can enhance the Higgs to diphoton decay rate, as is suggested by measurements of the signal strength \mu_{\gamma\gamma} by ATLAS and CMS. However, the large…

高能物理 - 唯象学 · 物理学 2015-06-12 Brian Batell , Sunghoon Jung , Hyun Min Lee

Searches for a heavy Standard Model Higgs boson focus on the 'gold plated mode' where the Higgs decays to two leptonic Z bosons. This channel provides a clean signature, in spite of the small leptonic branching ratios. We show that using…

高能物理 - 唯象学 · 物理学 2010-12-28 Christoph Hackstein , Michael Spannowsky

In observational studies, the assumption of sufficient overlap (positivity) is fundamental for the identification and estimation of causal effects. Failing to account for this assumption yields inaccurate and potentially infeasible…

统计方法学 · 统计学 2025-04-07 Jaehyuk Jang , Suehyun Kim , Kwonsang Lee

I present a new scheme for tagging boosted heavy flavor jets called "$\mu_x$ tagging" and its application to TeV-scale physics beyond the Standard Model. Using muons from B hadron decay to define a particular combination "x" of angular…

高能物理 - 唯象学 · 物理学 2016-05-16 Zack Sullivan

A pair of variables that tend to rise and fall either together or in opposition are said to be monotonically associated. For certain phenomena, this tendency is causally restricted to a subpopulation, as, for example, an allergic reaction…

应用统计 · 统计学 2015-09-03 Srinath Sampath , Adriano Caloiaro , Wayne Johnson , Joseph S. Verducci

We consider a general two Higgs doublet model which can simultaneously solve discrepancies in neutral B meson decay ($b\to s\ell \overline \ell$ distribution) and charged B meson decay ($b\to c\tau\overline\nu$) with a charged Higgs. The…

高能物理 - 唯象学 · 物理学 2023-05-17 Syuhei Iguro

A method is introduced for distinguishing top jets (boosted, hadronically decaying top quarks) from light quark and gluon jets using jet substructure. The procedure involves parsing the jet cluster to resolve its subjets, and then imposing…

高能物理 - 唯象学 · 物理学 2008-11-26 David E. Kaplan , Keith Rehermann , Matthew D. Schwartz , Brock Tweedie

We present a new variable selection method based on model-based gradient boosting and randomly permuted variables. Model-based boosting is a tool to fit a statistical model while performing variable selection at the same time. A drawback of…

机器学习 · 统计学 2017-02-16 Janek Thomas , Tobias Hepp , Andreas Mayr , Bernd Bischl

This paper explores two classes of model adaptation methods for Web search ranking: Model Interpolation and error-driven learning approaches based on a boosting algorithm. The results show that model interpolation, though simple, achieves…

机器学习 · 计算机科学 2019-07-24 Jianfeng Gao , Qiang Wu , Chris Burges , Krysta Svore , Yi Su , Nazan Khan , Shalin Shah , Hongyan Zhou

The Higgs boson of the Standard Model is being searched for at the LHC in the channel H -> gamma gamma. In the Higgs Triplet Model (HTM) there are contributions to this decay from loops of doubly charged scalars (H^{\pm\pm}) and singly…

高能物理 - 唯象学 · 物理学 2013-05-30 A. G. Akeroyd , S. Moretti

The associated production of a single top quark together with a Higgs boson at the LHC can be used to lift the degeneracy regarding the sign of the top quark Yukawa coupling. Therefore, t-channel and tW-channel production where the Higgs…

高能物理 - 实验 · 物理学 2016-12-12 Kevin Flöh

The exotic decay modes of non-Standard Model Higgs bosons are efficient in probing the hierarchical Two Higgs Doublet Models (2HDM). In particular, the decay mode $H^\pm\to HW^\pm$ serves as a powerful channel in searching for charged…

高能物理 - 唯象学 · 物理学 2020-12-30 Shuailong Li , Huayang Song , Shufang Su

The determination of the Higgs self-coupling in the Standard Model is one of the primary motivations among all the future lepton colliders. Extending the scalar sector of the Standard Model by a new Higgs doublet with a quadratic Higgs…

高能物理 - 唯象学 · 物理学 2018-11-14 Nasuf Sonmez

Model generation is a problem complementary to theorem proving and is important for fault analysis and debugging of formal specifications of security protocols, programs and terminological definitions. This paper discusses several ways of…

人工智能 · 计算机科学 2016-12-01 Peter Baumgartner , Renate A. Schmidt

In this paper, we study an extension of the standard model with a vector-like generation of leptons. This model provides a viable dark matter candidate and a possibility to enhance the Higgs decay rate into a pair of photons. We evaluate…

高能物理 - 唯象学 · 物理学 2015-03-20 Aniket Joglekar , Pedro Schwaller , Carlos E. M. Wagner