Results 91 to 100 of about 269,743 (379)

Unraveling the pattern of the XYZ mesons

open access: yesPhysics Letters B, 2014
We present a plausible mechanism for the origin of the XYZ mesons in the heavy meson spectra within a standard quark-model picture. We discuss the conditions required for the existence of four-quark bound states or resonances contributing to the heavy ...
J. Vijande, A. Valcarce
doaj   +1 more source

Equivalence of Electromagnetic Fluctuation and Nuclear (Yukawa) Forces: the π₀ Meson, its Mass and Lifetime

open access: yesSubstantia, 2022
It is shown how Maxwell’s equations for the electromagnetic field with Planck quantisation of allowed modes appears to provide a semiclassical account of nuclear interactions. The mesons emerge as plasmons, collective excitations in an electron positron
Barry W. Ninham   +2 more
doaj   +1 more source

Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry [PDF]

open access: yes, 2014
We revisit the Δ F = 2 transitions in the K and B d , s neutral meson systems in the context of the minimal left-right symmetric model. We take into account, in addition to up-to-date phenomenological data, the contributions related to the ...
S. Bertolini, Alessio Maiezza, F. Nesti
semanticscholar   +1 more source

Micromorpho‐anatomical studies on the leaves and woods of Turkish Daphne (Thymelaeaceae) taxa

open access: yesNordic Journal of Botany, EarlyView.
The identification of Daphne taxa is difficult because of the lack of available morphological characteristics. Here, we aimed to describe leaf and wood micromorpho‐anatomical characteristics of native Turkish Daphne taxa (D. glomerata, D. gnidioides, D. mezereum, D. mucronata, D. oleoides subsp. kurdica, D. pontica and D.
Melahat Ozcan, Funda Erşen Bak
wiley   +1 more source

Two-index SU(N) theories from one flavor QCD to Steven Weinberg's ππ scattering legacy

open access: yesNuclear Physics B
I review and improve on how two-index SU(N) gauge-fermion theories help access salient information about the large N vacuum and spectrum of QCD, super Yang Mills and meson-meson scattering.
Francesco Sannino
doaj   +1 more source

A spectral representation for baryon to meson transition distribution amplitudes [PDF]

open access: yes, 2010
We construct a spectral representation for the baron to meson transition distribution amplitudes (TDAs), i.e. matrix elements involving three quark correlators which arise in the description of baryon to meson transitions within the factorization ...
Pire, Bernard   +2 more
core   +5 more sources

Using dendroclimatic analysis of exotic deciduous conifers in an arboretum to document tree growth in response to climate change, Northeast Ohio, USA

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Rising temperatures and wetter conditions in the Midcontinent of North America are influencing climate responses in trees. Dendroclimatological analyses of four exotic deciduous conifer species from Secrest Arboretum, Northeast Ohio help identify past, present and future climate‐tree interactions.
Gregory Wiles   +6 more
wiley   +1 more source

The light scalar mesons as tetraquarks

open access: yesPhysics Letters B, 2016
We present a numerical solution of the four-quark Bethe–Salpeter equation for ground-state scalar tetraquarks with JPC=0++. We find that the four-body equation dynamically generates pseudoscalar-meson poles in the Bethe–Salpeter amplitude.
Gernot Eichmann   +2 more
doaj   +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

Home - About - Disclaimer - Privacy