Results 71 to 80 of about 522 (138)

Low-energy supernova constraints on millicharged particles

open access: yesJournal of High Energy Physics
The hot and dense conditions of the supernova core provide an ideal environment for the production of new feebly-interacting particles. Low-energy supernovae, characterized by low explosion energy, are particularly intriguing due to their stringent ...
Changqian Li   +3 more
doaj   +1 more source

Unearthing large pseudoscalar Yukawa couplings with machine learning

open access: yesJournal of High Energy Physics
With the Large Hadron Collider’s Run 3 in progress, the 125GeV Higgs boson couplings are being examined in greater detail, while searching for additional scalars.
Fernando Abreu de Souza   +5 more
doaj   +1 more source

Vector-like tops from first generation quarks: the role of width and coupling chiralities in same-charge production at the LHC

open access: yesJournal of High Energy Physics
In this paper, we tension the scope of the q q ¯ $$ q\overline{q} $$ , gg → T T ¯ $$ T\overline{T} $$ production process against that of the same-charge uu → TT one in searching for Vector-Like Quarks (VLQs) with electromagnetic charge +2/3 at the Large ...
Stefano Moretti   +2 more
doaj   +1 more source

Search for the γZ decay mode of heavy photophobic axion-like particles at the LHC

open access: yesJournal of High Energy Physics
We assume the coupling of Axion-like particle (ALP) to diphoton g aγγ ~ 0 and accomplish detailed analyses for the γZ decay mode of such heavy photophobic ALPs at the high luminosity-Large Hadron Collider (HL-LHC).
Zilong Ding, Ying-nan Mao, Kechen Wang
doaj   +1 more source

A simplified model of Heavy Vector Singlets for the LHC and future colliders

open access: yesJournal of High Energy Physics
We study a simplified model of two colourless heavy vector resonances in the singlet representation of SU(2) L , with zero and unit hypercharge. We discuss mixing with the Standard Model gauge bosons due to electroweak symmetry breaking, semi-analytic ...
Michael J. Baker   +3 more
doaj   +1 more source

Synergies and prospects for early resolution of the neutrino mass ordering. [PDF]

open access: yesSci Rep, 2022
Cabrera A   +25 more
europepmc   +1 more source

Scalar radiation zeros at the LHC

open access: yesJournal of High Energy Physics
We consider a class of singlet scalar extensions of the Standard Model of particle physics in which the scalar couples only to off-shell states.
Christoph Englert   +2 more
doaj   +1 more source

Improving the performance of weak supervision searches using data augmentation

open access: yesJournal of High Energy Physics
Weak supervision combines the advantages of training on real data with the ability to exploit signal properties. However, training a neural network using weak supervision often requires an excessive amount of signal data, which severely limits its ...
Zong-En Chen   +2 more
doaj   +1 more source

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