Results 61 to 70 of about 261,774 (343)

$\delta$ meson effects on neutron stars in the modified quark-meson coupling model

open access: yes, 2008
The properties of neutron stars are investigated by including $\delta$ meson field in the Lagrangian density of modified quark-meson coupling model. The $\Sigma^-$ population with $\delta$ meson is larger than that without $\delta$ meson at the beginning,
Baym G.   +5 more
core   +1 more source

Measurement of branching fractions for D meson decaying into ϕ meson and a pseudoscalar meson

open access: yesPhysics Letters B, 2019
The four decay modes $D^{0}\to ^{0}$, $D^{0}\to $, $D^{+}\to ^{+}$, and $D^{+}\to K^{+}$ are studied by using a data sample taken at the centre-of-mass energy $\sqrt{s} = 3.773$~GeV~with the BESIII detector, corresponding to an integrated luminosity of 2.93 fb$^{-1}$. The branching fractions of the first three decay modes are measured to be ${
Z.L. Hou   +234 more
openaire   +12 more sources

Single meson contributions to the muon’s anomalous magnetic moment [PDF]

open access: yes, 2014
We develop the formalism to provide an improved estimate for the hadronic light-by-light correction to the muon’s anomalous magnetic moment $$a_\mu $$aμ, by considering single meson contributions beyond the leading pseudoscalar mesons.
V. Pauk, M. Vanderhaeghen
semanticscholar   +1 more source

Free energies as invariants of Teichmüller like structures [PDF]

open access: yes, 2013
A Teichmüller like structure on the space of d-degree holomorphic maps on the circle S1, marked by conjugations to the map z 7→ z d, can be defined. Here we introduce a definition of free energy associated to this kind of dynamics as an invariant of ...
Meson, Alejandro Mario   +1 more
core   +1 more source

S-wave Meson-Nucleon Interactions and the Meson Mass in Nuclear Matter from Chiral Effective Lagrangians

open access: yes, 1995
Chiral effective lagrangians may differ in their prediction of meson-nucleon scattering amplitudes off-meson-mass-shell, but must yield identical S-matrix elements.
Thorsson, Vesteinn, Wirzba, Andreas
core   +2 more sources

Grass functional traits reflect the long history of fire and grazers in the savannas of Texas

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Understanding relationships among grass traits, fire, and herbivores may help improve conservation strategies for savannas that are threatened by novel disturbance regimes. Emerging theory, developed in Africa, emphasizes that functional traits of savanna grasses reflect the distinct ways that fire and grazers consume biomass ...
Ashish N. Nerlekar   +2 more
wiley   +1 more source

The role of meson exchanges in light-by-light scattering

open access: yesPhysics Letters B, 2017
We discuss the role of meson exchange mechanisms in γγ→γγ scattering. Several pseudoscalar (π0, η, η′(958), ηc(1S), ηc(2S)), scalar (f0(500), f0(980), a0(980), f0(1370), χc0(1P)) and tensor (f2(1270), a2(1320), f2′(1525), f2(1565), a2(1700)) mesons are ...
Piotr Lebiedowicz, Antoni Szczurek
doaj   +1 more source

MESON-MESON THEORY

open access: yesLe Journal de Physique Colloques, 1973
No abstract ...
openaire   +3 more sources

Does the abiotic environment influence the distribution of flower and fruit colors?

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Color in flowers and fruits carries multiple functions, from attracting animal partners (pollinators, dispersers) to mitigating environmental stress (cold, drought, UV‐B). With research historically focusing on biotic interactions as selective agents, however, it remains unclear whether abiotic stressors impact flower and fruit colors ...
Agnes S. Dellinger   +3 more
wiley   +1 more source

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