Results 81 to 90 of about 257,743 (313)

Favored Inflationary Models by Scalar Field Condensate Baryogenesis

open access: yesGalaxies, 2021
We calculate the baryon asymmetry value generated in the Scalar Field Condensate (SCF) baryogenesis model obtained in several inflationary scenarios and different reheating models.
Daniela Kirilova, Mariana Panayotova
doaj   +1 more source

Constraining Baryon-Dark-Matter Scattering with the Cosmic Dawn 21-cm Signal. [PDF]

open access: yesPhysical Review Letters, 2018
The recent detection of an anomalously strong 21-cm signal of neutral hydrogen from cosmic dawn by the EDGES low-band radio experiment can be explained if cold dark matter particles scattered off the baryons draining excess energy from the gas.
A. Fialkov, R. Barkana, Aviad Cohen
semanticscholar   +1 more source

Direct baryogenesis in the broken phase

open access: yesJournal of High Energy Physics, 2020
We show a new mechanism for baryogenesis where the reheating temperature can be smaller than the electroweak scale. The baryon number symmetry is violated by a dimension nine operator which conserves a baryon parity. A high energy quark from the decay of
Takehiko Asaka, Hiroyuki Ishida, Wen Yin
doaj   +1 more source

Baryon-baryon and baryon-antibaryon interaction amplitudes in the spin--momentum operator expansion method

open access: yes, 2007
Partial wave scattering amplitudes in baryon-baryon and baryon-antibaryon collisions and amplitudes for the production and decay of baryon resonances are constructed in the framework of the spin-momentum operator expansion method.
Anisovich, A. V.   +4 more
core   +1 more source

Cool baryon and quark matter in holographic QCD [PDF]

open access: yesJournal of High Energy Physics, 2019
A bstractWe establish a holographic bottom-up model which covers both the baryonic and quark matter phases in cold and dense QCD. This is obtained by including the baryons using simple approximation schemes in the V-QCD model, which also includes the ...
T. Ishii, M. Järvinen, G. Nijs
semanticscholar   +1 more source

Magnetic Hopfions as Local Rotations of the Uniform Magnetization Background

open access: yesphysica status solidi (RRL) – Rapid Research Letters, EarlyView.
The Hopf mapping of 3D coordinate space to the unit sphere m2 = 1 in the magnetization space m(r) can be parametrized by some angles. These angles are used to define a local rotation matrix to restore the hopfion magnetization configuration from the uniformly magnetized state for any Hopf indices.
Konstantin Y. Guslienko
wiley   +1 more source

Correlation length of the angular mode for an approximate U(1) symmetry during inflation

open access: yesPhysics Letters B, 2023
It is known that a light scalar field obtains fluctuations in the de Sitter inflationary background. Such fluctuations could provide an initial condition for baryogenesis through the Affleck-Dine mechanism, where an approximate U(1)B symmetry is usually ...
Chengcheng Han
doaj   +1 more source

Meson-Baryon Form Factors in Chiral Colour Dielectric Model [PDF]

open access: yes, 1998
The renormalised form factors for pseudoscalar meson-baryon coupling are computed in chiral colour dielectric model. This has been done by rearranging the Lippmann-Schwinger series for the meson baryon scattering matrix so that it can be expressed as a ...
A. Chodos   +20 more
core   +2 more sources

Measurement of the Lifetime of the Doubly Charmed Baryon Ξ_{cc}^{++}. [PDF]

open access: yesPhysical Review Letters, 2018
The first measurement of the lifetime of the doubly charmed baryon Ξ_{cc}^{++} is presented, with the signal reconstructed in the final state Λ_{c}^{+}K^{-}π^{+}π^{+}.
R. Aaij   +499 more
semanticscholar   +1 more source

Charmed baryon spectrum from lattice QCD near the physical point [PDF]

open access: yes, 2020
We calculate the low-lying spectrum of charmed baryons in lattice QCD on the $32^3\times64$, $N_f=2+1$ PACS-CS gauge configurations at the almost physical pion mass of $\sim 156$ MeV/c$^2$.
H. Bahtiyar   +5 more
semanticscholar   +1 more source

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