Journal of High Energy Physics

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Top tagging: an analytical perspective
Journal of High Energy Physics - Tập 2018 Số 9 - 2018
Mrinal Dasgupta, Marco Guzzi, J. H. Rawling, Grégory Soyez
Abstract In this paper we study aspects of top tagging from first principles of QCD. We find that the method known as the CMS top tagger becomes collinear unsafe at high p t and propose variants thereof which are...... hiện toàn bộ
Simplified models for Higgs physics: singlet scalar and vector-like quark phenomenology
Journal of High Energy Physics - - 2016
Matthew J. Dolan, JoAnne L. Hewett, M. Krämer, Thomas G. Rizzo
Time-periodicities in holographic CFTs
Journal of High Energy Physics - Tập 2021 - Trang 1-49 - 2021
Ben Craps, Marine De Clerck, Oleg Evnin
Dynamics in AdS spacetimes is characterized by various time-periodicities. The most obvious of these is the time-periodic evolution of linearized fields, whose normal frequencies form integer-spaced ladders as a direct consequence of the structure of representations of the conformal group. There are also explicitly known time-periodic phenomena on much longer time scales inversely proportional to ...... hiện toàn bộ
NNLO QCD corrections to γ + η c (η b ) exclusive production in electron-positron collision
Journal of High Energy Physics - - 2018
Long-Bin Chen, Yi Liang, C. F. Qiao
Improved opacity expansion at NNLO for medium induced gluon radiation
Journal of High Energy Physics - Tập 2020 - Trang 1-27 - 2020
João Barata, Yacine Mehtar-Tani
When an energetic parton propagates in a hot and dense QCD medium it loses energy by elastic scatterings or by medium-induced gluon radiation. The gluon radiation spectrum is suppressed at high frequency due to the LPM effect and encompasses two regimes that are known analytically: at high frequencies $$ \omega ...... hiện toàn bộ
Higgs, di-Higgs and tri-Higgs production via SUSY processes at the LHC with 14 TeV
Journal of High Energy Physics - Tập 2015 - Trang 1-46 - 2015
Melissa van Beekveld, Wim Beenakker, Sascha Caron, Remco Castelijn, Marie Lanfermann, Antonia Struebig
We have systematically investigated the production of a Higgs boson with a mass of about 125 GeV in the decays of supersymmetric particles within the phenomenological MSSM (pMSSM). We find regions of parameter space that are consistent with all world data and that predict a sizeable rate of anomalous Higgs, di-Higgs and even tri-Higgs events at the 14 TeV LHC. All relevant SUSY production processe...... hiện toàn bộ
Unitarity bounds on dark matter effective interactions at LHC
Journal of High Energy Physics - Tập 2014 Số 6 - Trang 1-17 - 2014
Endo, Motoi, Yamamoto, Yasuhiro
The perturbative unitarity bound is studied in the monojet process at LHC. The production of the dark matter is described by the low-energy effective theory. The analysis of the dark matter signal is not validated, if the unitarity condition is violated. It is shown that the current LHC analysis with the effective theory breaks down, at least, when the dark matter is heavier than $ \mathcal{O}(100...... hiện toàn bộ
Quantum entanglement of locally excited states in Maxwell theory
Journal of High Energy Physics - Tập 2016 - Trang 1-23 - 2016
Masahiro Nozaki, Naoki Watamura
In 4 dimensional Maxwell gauge theory, we study the changes of (Rényi) entanglement entropy which are defined by subtracting the entropy for the ground state from the one for the locally excited states, generated by acting with gauge invariant local operators on the state. The changes for the operators which we consider in this paper reflect the electric-magnetic duality. The late-time value of ch...... hiện toàn bộ
Heavy colored SUSY partners from deflected anomaly mediation
Journal of High Energy Physics - Tập 2015 - Trang 1-18 - 2015
Fei Wang, Wenyu Wang, Jin Min Yang, Yang Zhang
We propose a deflected anomaly mediation scenario from SUSY QCD which can lead to both positive and negative deflection parameters (there is a smooth transition between these two deflection parameter regions by adjusting certain couplings). Such a scenario can naturally give a SUSY spectrum in which all the colored sparticles are heavy while the sleptons are light. As a result, the discrepancy bet...... hiện toàn bộ
Resonance mediated by fermions in kink-antikink collisions
Journal of High Energy Physics - Tập 2022 - Trang 1-20 - 2022
Dionisio Bazeia, João G. F. Campos, Azadeh Mohammadi
We investigate generalizations of the ϕ4 and sine-Gordon models, including interactions with Dirac Fermions. We observe new resonance phenomena by taking the fermion back-reaction into account. First, we show that the vibrational mode responsible for the resonance structure of the ϕ4 model has the same frequency as the energy of the fermion excited state when the back-reaction becomes more signifi...... hiện toàn bộ
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