Results 21 to 30 of about 153,444 (258)

Supernova 1987A constraints on sub-GeV dark sectors, millicharged particles, the QCD axion, and an axion-like particle [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractWe consider the constraints from Supernova 1987A on particles with small couplings to the Standard Model. We discuss a model with a fermion coupled to a dark photon, with various mass relations in the dark sector; millicharged particles; dark ...
Jae Hyeok Chang   +2 more
semanticscholar   +1 more source

Walking from 750 GeV to 950 GeV in the technipion zoo [PDF]

open access: yesPhysical Review D, 2016
If the 750 GeV diphoton excess is identified with the color-singlet isosinglet-technipion, $P^0$ (750), in the one-family walking technicolor, as in our previous paper, then there should exist another color-singlet technipion, isotriplet one, $P^{\pm,3}$, definitely predicted at around 950 GeV independently of the dynamical details. The $P^{\pm,3}(950)$
Matsuzaki, Shinya, Yamawaki, Koichi
openaire   +2 more sources

Phenomenology of GeV-scale heavy neutral leptons [PDF]

open access: yesJournal of High Energy Physics, 2018
We review and revise phenomenology of the GeV-scale heavy neutral leptons (HNLs). We extend the previous analyses by including more channels of HNLs production and decay and provide with more refined treatment, including QCD corrections for the HNLs of ...
K. Bondarenko   +3 more
semanticscholar   +1 more source

Spectrum of scalar and pseudoscalar glueballs from functional methods

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We provide results for the spectrum of scalar and pseudoscalar glueballs in pure Yang–Mills theory using a parameter-free fully self-contained truncation of Dyson–Schwinger and Bethe–Salpeter equations.
Markus Q. Huber   +2 more
doaj   +1 more source

Characterisation of the dip-bump structure observed in proton–proton elastic scattering at $$\sqrt{s}$$ s = 8 TeV

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
The TOTEM collaboration at the CERN LHC has measured the differential cross-section of elastic proton–proton scattering at $$\sqrt{s} = 8\,\mathrm{TeV}$$ s = 8 TeV in the squared four-momentum transfer range $$0.2\,\mathrm{GeV^{2}}< |t| < 1.9\,\mathrm ...
G. Antchev   +87 more
doaj   +1 more source

A 96 GeV Higgs boson in the N2HDM [PDF]

open access: yesThe European Physical Journal C, 2019
We discuss a $$\sim 3\,\sigma $$∼3σ signal (local) in the light Higgs-boson search in the diphoton decay mode at $$\sim 96 \,\, \mathrm {GeV}$$∼96GeV as reported by CMS, together with a $$\sim 2\,\sigma $$∼2σ excess (local) in the $$b {{\bar{b}}}$$bb ...
T. Biekötter   +2 more
semanticscholar   +1 more source

Production of antideuterons by 43 GeV, 52 GeV and 70 GeV protons

open access: yesPhysics Letters B, 1969
Abstract The production of antideuterons on aluminium nuclei by 43 GeV, 52 GeV and 70 GeV protons has been measured.
Binon, Freddy   +14 more
openaire   +2 more sources

GeV-scale thermal WIMPs: Not even slightly ruled out [PDF]

open access: yesPhysical Review D, 2018
Weakly Interacting Massive Particles (WIMPs) have long reigned as one of the leading classes of dark matter candidates. The observed dark matter abundance can be naturally obtained by freezeout of weak-scale dark matter annihilations in the early ...
R. Leane, T. Slatyer, J. Beacom, K. Ng
semanticscholar   +1 more source

Petawatt Laser Guiding and Electron Beam Acceleration to 8 GeV in a Laser-Heated Capillary Discharge Waveguide.

open access: yesPhysical Review Letters, 2019
Guiding of relativistically intense laser pulses with peak power of 0.85 PW over 15 diffraction lengths was demonstrated by increasing the focusing strength of a capillary discharge waveguide using laser inverse bremsstrahlung heating.
A. Gonsalves   +28 more
semanticscholar   +1 more source

Global polarization of $\Lambda$ hyperons in Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV [PDF]

open access: yes, 2018
Global polarization of $\Lambda$ hyperons has been measured to be of the order of a few tenths of a percent in Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV, with no significant difference between $\Lambda$ and $\bar{\Lambda}$.
J. Adam   +342 more
semanticscholar   +1 more source

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