Results 41 to 50 of about 255,388 (309)

Observation of e + e − → ηψ(2S) at center-of-mass energies from 4.236 to 4.600 GeV

open access: yesJournal of High Energy Physics, 2021
Using a total of 5.25 fb −1 of e + e − collision data with center-of-mass energies from 4.236 to 4.600 GeV, we report the first observation of the process e + e − → ηψ(2S) with a statistical significance of 4.9 standard deviations.
The BESIII collaboration   +517 more
doaj   +1 more source

Production of K S 0 $$ {\textrm{K}}_{\textrm{S}}^0 $$ , Λ ( Λ ¯ $$ \overline{\Lambda} $$ ), Ξ ± , and Ω ± in jets and in the underlying event in pp and p–Pb collisions

open access: yesJournal of High Energy Physics, 2023
The production of strange hadrons ( K S 0 $$ {\textrm{K}}_{\textrm{S}}^0 $$ , Λ, Ξ ± , and Ω ± ), baryon-to-meson ratios (Λ/ K S 0 $$ {\textrm{K}}_{\textrm{S}}^0 $$ , Ξ/ K S 0 $$ {\textrm{K}}_{\textrm{S}}^0 $$ , and Ω/ K S 0 $$ {\textrm{K}}_{\textrm{S ...
The ALICE collaboration   +1032 more
doaj   +1 more source

Particle production in the oscillating inflation model [PDF]

open access: yes, 2000
We investigate the particle production of a scalar field $\chi$ coupled to an inflaton field $\phi$ ($g^2\phi^2\chi^2/2$) in the {\it oscillating inflation} model, which was recently proposed by Damour and Mukhanov. Although the fluctuation of the $\phi$
A. D. Dolgov   +52 more
core   +2 more sources

Measurement of the energy dependence of the e + e − → B B ¯ $$ B\overline{B} $$ , B B ¯ ∗ $$ B{\overline{B}}^{\ast } $$ and B ∗ B ¯ ∗ $$ {B}^{\ast }{\overline{B}}^{\ast } $$ exclusive cross sections

open access: yesJournal of High Energy Physics, 2021
We report the first measurement of the exclusive cross sections e + e − → B B ¯ $$ B\overline{B} $$ , e + e − → B B ¯ ∗ $$ B{\overline{B}}^{\ast } $$ , and e + e − → B ∗ B ¯ ∗ $$ {B}^{\ast }{\overline{B}}^{\ast } $$ in the energy range from 10.63 GeV to ...
The BELLE collaboration   +190 more
doaj   +1 more source

Monte-Carlo simulations of photohadronic processes in astrophysics [PDF]

open access: yes, 1999
A new Monte Carlo program for photohadronic interactions of relativistic nucleons with an ambient photon radiation field is presented. The event generator is designed to fulfil typical astrophysical requirements, but can also be used for radiation and ...
Engel, Ralph   +4 more
core   +3 more sources

Calculation of Particle Production by Nambu Goldstone Bosons with Application to Inflation Reheating and Baryogenesis

open access: yes, 1994
A semiclassical calculation of particle production by a scalar field in a potential is performed. We focus on the particular case of production of fermions by a Nambu-Goldstone boson $\theta$.
A. Albrecht   +19 more
core   +1 more source

Measurements of differential Z boson production cross sections in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2019
Measurements are presented of the differential cross sections for Z bosons produced in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV and decaying to muons and electrons.
The CMS collaboration   +2313 more
doaj   +1 more source

Measurements of the pp → WZ inclusive and differential production cross sections and constraints on charged anomalous triple gauge couplings at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2019
The WZ production cross section is measured in proton-proton collisions at a centre-of-mass energy s $$ \sqrt{s} $$ = 13 TeV using data collected with the CMS detector, corresponding to an integrated luminosity of 35.9 fb−1.
The CMS collaboration   +2292 more
doaj   +1 more source

Parametric Resonance in a Vibrating Cavity

open access: yes, 2003
We present the study of parametric resonance in a one-dimensional cavity based on the analysis of classical optical paths. The recursive formulas for field energy are given. We separate the mechanism of particle production and the resonance amplification
Arnold   +17 more
core   +1 more source

Effect of the Generalized Uncertainty Principle on Post-Inflation Preheating [PDF]

open access: yes, 2011
We examine effects of the Generalized Uncertainty Principle, predicted by various theories of quantum gravity to replace the Heisenberg's uncertainty principle near the Planck scale, on post inflation preheating in cosmology, and show that it can predict
A. Kempf   +11 more
core   +2 more sources

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