Results 81 to 90 of about 261,774 (343)

Theoretical study of the γγ→meson-meson reaction [PDF]

open access: yesAIP Conference Proceedings, 1998
We present a unified picture which studies simultaneously the gamma gamma-->pi^+ pi^-, pi^0 pi^0, K^+ K^-, K^0 bar{K}^0, pi^0 eta reactions up to about sqrt(s)=1.4 GeV reproducing the experimental cross sections. The present work implements in an accurate way the final state interactions of the meson-meson system, which is shown to be essential in ...
Oller Berber, José Antonio   +1 more
openaire   +7 more sources

Compressibility Function and Speed of Sound in the Non‐Commutative Quantum Hadrodynamics Type‐I Model for Neutron Stars

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT We investigate the effects of a minimal measurable length on neutron stars, within the quantum hadrodynamics (QHD‐I) model modified by the Generalized Uncertainty Principle (GUP). Working in a deformed Poisson algebra framework, we incorporate GUP effects via a time‐invariant transformation of the phase space volume, effectively reducing the ...
João Gabriel Galli Gimenez   +2 more
wiley   +1 more source

In-medium Properties of the η′-Meson from Photonuclear Reactions

open access: yesEPJ Web of Conferences, 2012
Investigations of in-medium properties of the η′-meson are presented. The photoproduction of η′-mesons off 12C, 40Ca, 93Nb and 208Pb nuclei has been measured with the Crystal Barrel/TAPS detector system at the ELSA accelerator in Bonn.
Nanova Mariana
doaj   +1 more source

(Anti-)Stokes scattering on kinks

open access: yesJournal of High Energy Physics, 2023
At leading order, there are three inelastic scattering processes beginning with a quantum kink and a fundamental meson. Meson multiplication, in which the final state is a kink and two mesons, was treated recently.
Jarah Evslin, Hui Liu
doaj   +1 more source

Azimuthal anisotropy of D meson production in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV [PDF]

open access: yes, 2014
The production of the prompt charmed mesons $D^0$, $D^+$ and $D^{*+}$ relative to the reaction plane was measured in Pb-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision of $\sqrt{s_{\rm NN}} = 2.76$ TeV with the ALICE detector at ...
B. Abelev   +499 more
semanticscholar   +1 more source

Charmed scalar resonances -- Conventional and four-quark mesons

open access: yes, 2005
We propose that there coexist two scalar mesons of different structures (a conventional meson and a four-quark meson) in the recently observed broad bumps just below the large peak of the tensor meson in the D-pi mass distribution.
McKellar, Bruce H J, Terasaki, K.
core   +1 more source

On the Decay of a Heavy Meson into Lighter Mesons [PDF]

open access: yesProgress of Theoretical Physics, 1950
Existence of a heavy meson (,-meson) having the mass about 700~1000 times of an electron and the fact it disintegrates into l'Z'-mesons is almost confirmed by recent experiments. For example, G. D. Rochester and C. C. Butleel have reported the processes which are considered to be ,±~1C± + 1CO and ,o_l'Z'+ + r.and C. F.
Shoji Ozaki, Seibun Sasaki, Sadao Oneda
openaire   +2 more sources

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post‐War Period**

open access: yesBerichte zur Wissenschaftsgeschichte, EarlyView.
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley   +1 more source

Measurement of prompt D-meson production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV [PDF]

open access: yes, 2014
The $p_{\rm T}$-differential production cross sections of the prompt charmed mesons $D^0$, $D^+$, $D^{*+}$ and $D_{\rm s}^{+}$ and their charge conjugate in the rapidity interval $-0 ...
B. Abelev   +499 more
semanticscholar   +1 more source

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