Results 51 to 60 of about 72,009 (264)

η′ → π0γγ and ��′ → ηγγ: a primer analysis

EPJ Web of Conferences, 2012
The electromagnetic rare decays η′ → π0γγ and η′ → π0γγ are analysed for the first time and their predicted branching ratios given. The vector meson exchange dominant contribution is treated using Vector Meson Dominance and the scalar component is ...
Escribano Rafel
doaj   +1 more source

Nuclear shadowing at low Q^2 [PDF]

, 2003
We re-examine the role of vector meson dominance in nuclear shadowing at low Q^2. We find that models which incorporate both vector meson and partonic mechanisms are consistent with both the magnitude and the Q^2 slope of the shadowing data.Comment: 7 ...
A. Capella, A. Donnachie, A. W. Thomas, A.H. Mueller, B. Badelek, B.Z. Kopeliovich, B.Z. Kopeliovich, C. Boros, C. Boros, C.L. Bilchak, E.L. Berger, F.E. Close, G. Ingelman, G. Piller, G. Piller, G. Shaw, G.A. Schuler, G.A. Schuler, G.P. Zeller, J. Kwiecinski, J. Kwiecinski, J. Qiu, J.C. Collins, K. Goulianos, L.L. Frankfurt, M. Arneodo, M. Arneodo, M.R. Adams, M.R. Adams, M.R. Adams, N.N. Nikolaev, P. Amaudruz, R.J. Glauber, S. Kovalenko, S. Kumano, S.J. Brodsky, T.H. Bauer, V.N. Gribov, W. Melnitchouk, W. Melnitchouk, W. Melnitchouk, W. Melnitchouk   +41 more
core   +3 more sources

The contribution of axial-vector mesons to hyperfine structure of muonic hydrogen

Physics Letters B, 2018
The contribution from the axial-vector meson exchange to the potential of the muon–proton interaction in muonic hydrogen induced by anomalous axial-vector meson coupling to two photon state is calculated.
A.E. Dorokhov, N.I. Kochelev, A.P. Martynenko, F.A. Martynenko, A.E. Radzhabov   +4 more
doaj   +1 more source

Configurational information measure of mesonic states in 4-flavor AdS/QCD

Physics Letters B, 2023
Strange axial-vector kaons, K1, and f1 meson resonances are investigated in the 4-flavor AdS/QCD model. Their underlying differential configurational entropy is computed and the mass spectra of higher-excited resonances, in both these mesonic families ...
G. Karapetyan, W. de Paula, R. da Rocha
doaj   +1 more source

Asphalted parking lots are environmental filters for multiple propagule dispersal and pollination strategies

Nordic Journal of Botany, EarlyView.
Understanding community assembly for wild species in anthropogenic settings has become increasingly important as biodiversity and ecosystem services are threatened by development pressures. Urban hardscape habitats such as parking lots are widespread, extreme, terrestrial anthropogenic environments that influence plant community assembly by way of ...
Lauren J. Frazee, Myla F. J. Aronson, Jens Kattge, Lena Struwe   +3 more
wiley   +1 more source

Decay constants and form factors of s-wave and p-wave mesons in the covariant light-front quark model

, 2011
We reanalyze the decay constants of s-wave and p-wave mesons and D, B ->M form factors, where M represents a pseudoscalar meson, a vector meson, a scalar meson, or an axial vector meson within a covariant light-front quark model.
Abada A, Abe K Belle Collaboration, Amsler C, Asner D Heavy Flavor Averaging Group, Aubert B, Ball P, Bernard C, Bjorken J D, Bjorken J D, Close F E, Feldmann T, Flynn J M, Hwang C W, Nakamura K, R C Verma, Rosner J L Stone S, Suzuki M   +16 more
core   +1 more source

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop, Jiwei Li, Daryl L. Moorhead, Sasha C. Reed, Katherine E. O. Todd‐Brown, Alexi C. Besser, Dellena Evelyn Bloom, Thomas C. Ingalls, Alejandro Cueva   +8 more
wiley   +1 more source

Next-to-leading order corrections to deeply virtual production of pseudoscalar mesons

Physics Letters B, 2017
We complete the perturbative next-to-leading order corrections to the hard scattering amplitudes of deeply virtual meson leptoproduction processes at leading twist-two level by presenting the results for the production of flavor singlet pseudoscalar ...
G. Duplančić, D. Müller, K. Passek-Kumerički   +2 more
doaj   +1 more source

Nuclear and Neutron Star Radii [PDF]

, 2002
We investigate the correlation between nuclear neutron radii and the radius of neutron stars. We use a well-established hadronic SU(3) model based on chiral symmetry that naturally includes non-linear vector meson and scalar meson - vector meson ...
Alex Brown, Beckmann, Bennett, Hanauske, Horowitz, Horowitz, Müller, Oppenheimer, Papazoglou, Papazoglou, Pomorski, Ramsey-Musolf, S Schramm, Schechter, Schramm, Schramm, Tolman, Vretanar, Zschiesche, Zschiesche   +19 more
core   +2 more sources

Comprehensive framework for assessing and optimizing existing research networks

Conservation Biology, EarlyView.
Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East, Jitendra Kumar, William Hargrove   +2 more
wiley   +1 more source