Results 111 to 120 of about 280,926 (312)

Ordinary and Extraordinary Hadrons [PDF]

open access: yesAIPConf.Proc.964:1-13,2007; Prog.Theor.Phys.Suppl.168:127-142,2007, 2007
Resonances and enhancements in meson-meson scattering can be divided into two classes distinguished by their behavior as the number of colors N_c in QCD becomes large: The first are ordinary mesons that become stable as N_c goes to infinity. This class includes textbook q-bar q mesons as well as glueballs and hybrids.
arxiv   +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

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 PteridoPortal: A publicly accessible collection of over three million records of extant and extinct pteridophytes

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Pteridophytes—vascular land plants that disperse by spores—are a powerful system for studying plant evolution, particularly with respect to the impact of abiotic factors on evolutionary trajectories through deep time. However, our ability to use pteridophytes to investigate such questions—or to capitalize on the ecological and ...
Carl J. Rothfels   +67 more
wiley   +1 more source

Coordination of photosynthetic traits across soil and climate gradients

open access: yesGlobal Change Biology, Volume 29, Issue 3, Page 856-873, February 2023., 2023
Using an Australia‐wide photosynthetic trait dataset, we tested predictions from least‐cost optimality theory, which posits that plants balance nutrient use and water loss to optimize photosynthesis. We found that leaf nitrogen and rates of water loss co‐vary with one another in response to climate and to a lesser extent, soils.
Andrea C. Westerband   +14 more
wiley   +1 more source

Effects of scalar mesons in a Skyrme model with hidden local symmetry [PDF]

open access: yesPhys. Rev. D 92, 076007 (2015), 2015
We study the effects of light scalar mesons on the skyrmion properties by constructing and examining a mesonic model including pion, rho meson, and omega meson fields as well as two-quark and four-quark scalar meson fields. In our model, the physical scalar mesons are defined as mixing states of the two- and four-quark fields.
arxiv   +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

D*(s0)(2317) meson and D-meson-kaon scattering from lattice QCD. [PDF]

open access: yesPhysical Review Letters, 2013
The scalar meson D*(s0)(2317) is found 37(17) MeV below the DK threshold in a lattice simulation of the J(P)=0(+) channel using, for the first time, both DK as well as s¯c interpolating fields. The simulation is done on N(f)=2+1 gauge configurations with
D. Mohler   +4 more
semanticscholar   +1 more source

Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge   +3 more
wiley   +1 more source

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