Results 71 to 80 of about 48,991 (269)
Theoretical study of the γγ→meson-meson reaction [PDF]
AIP Conference Proceedings, 1998 We present a unified theoretical picture which studies simultaneously the γγ→π+π−, π0π0, K+K−, K0K0, π0η reactions up to about s=1.4 GeV reproducing the experimental cross sections. The present work implements in an accurate way the final state interaction of the meson-meson system, which is shown to be essential in order to reproduce the data ...
J.A. Oller, E. Oset
openaire +2 more sources
Wildlife Biology, EarlyView.In fenced protected areas where large carnivore populations persist or have been restored through reintroduction, population monitoring is essential to inform management. Robust density estimates are particularly important given the strong influence of large carnivores on ecosystem processes, yet such data remain scarce for arid systems where ...
Marna Visagie +3 more
wiley +1 more source
Chiral approach to phi radiative decays [PDF]
, 2006 The radiative decays of the phi meson are known to be a good source of information about the a0(980) and f0(980) scalar mesons. We discuss these decays starting from a nonlinear model Lagrangian which maintains the (broken) chiral symmetry for the ...
Black, Deirdre +2 more
core +3 more sources
Behavioral response of moose Alces alces to summer heat stress
Wildlife Biology, EarlyView.Minnesota moose are heat‐stressed during summers, which is adversely impacting their survival. We used both movement and activity data to explore the behavioral responses of Minnesota moose experiencing heat stress, termed ‘hot moose events' or HMEs, to understand how both ambient temperature and available habitat contribute to the ability of these ...
Michelle Carstensen +3 more
wiley +1 more source
Superexotic K*+D*+K*+ bound state
Physics Letters BWe study a system made from K*+D*+K*+ with charge 3, isospin I=3/2, spin J=3, and a quark content of cd¯s¯us¯u, which make it highly exotic relative to the standard qq¯ structure of mesons.
Wen-Hao Jia +4 more
doaj +1 more source
There is only one set of the correct values of fF, fD and fS coupling constants in SU(3) invariant Lagrangian of the vector-meson-baryon interactions [PDF]
EPJ Web of Conferences, 2019 One can prove, there is generally eight various ω − ø mixings forms in elementary particle physics, which on one side give different forms of the vector-meson-nucleon coupling constants through fF, fD and fS in SU(3) invariant Lagrangian of the vector ...
Adamuščín Cyril +3 more
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Localized resources enable noninvasive genetic monitoring of small populations of mountain ungulates
Wildlife Society Bulletin, EarlyView.Using microsatellite analysis of fecal samples collected at mineral licks from 2019–2022, we assessed abundance, apparent survival and genetics of bighorn sheep in the Teton Range, Wyoming, USA. Annual abundance estimates ranged from 118−132 individuals split into 2 similar‐sized demes and apparent survival estimates ranged from 0.72–0.92.
Carson J. Butler +4 more
wiley +1 more source
The sigma-meson exchange contribution to the muonic hydrogen Lamb shift [PDF]
EPJ Web of Conferences, 2019 The sigma(ξ)meson exchange contribution to the potential of the muon-proton interactionin muonichydrogen inducedbythe ξ-meson coupling to two photons is estimated. The transition form factor ξ → γγ is deduced from the quark model and experimental data on
Dorokhov A.E. +3 more
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Vector meson and heavy meson strong interaction [PDF]
Physical Review D, 2009 We calculate the coupling constants between the light vector mesons and heavy mesons within the framework of the light-cone QCD sum rule in the leading order of heavy quark effective theory. The sum rules are very stable with the variations of the Borel parameter and the continuum threshold.
Huang, Peng-Zhi +2 more
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Apex predators exploit advantageous snow conditions across hunting modes
Journal of Animal Ecology, EarlyView.Advantageous snow conditions—in terms of snow depth and density—are among the most important features of the winter landscape for two apex predators, regardless of hunting strategy. In a warming climate, the knock‐on effects of a diminishing snowpack may reduce the hunting success of multiple large carnivore species.
Benjamin K. Sullender +7 more
wiley +1 more source