منابع مشابه
Light Vector Mesons
This article reviews the current status of experimental results obtained in the measurement of light vector mesons produced in proton-proton and heavy ion collisions at different energies. The review is focused on two phenomena related to the light vector mesons; the modification of the spectral shape in search of chiral symmetry restoration and suppression of the meson production in heavy ion ...
متن کاملRadiative decays of light vector mesons
The new data on ρ, ω, φ radiative decays into π 0 γ, ηγ, η ′ γ from SND experiment at VEPP-2M e + e − collider are presented.
متن کاملLight Vector Mesons in Nuclear Matter
We summarize the current theoretical and experimental status of the spectral changes of vector mesons (ρ, ω, φ) in nuclear medium. Various approaches including QCD sum rules, effective theory of hadrons and bag models show decreasing of the vector meson masses in nuclear matter. Possibility to detect the mass shift through lepton pairs in γ −A, p−A and A−A reactions are also discussed. Invited ...
متن کاملA fresh look at exclusive electroproduction of light vector mesons
Relying on the collinear factorization approach, we demonstrate that H1 and ZEUS measurements of exclusive light vector meson and photon electroproduction cross sections can be simultaneously described for photon virtualities ofQ 2GeV. Our findings reveal that quark exchanges are important in this small xBj region and that in leading order approximation the gluonic component is suppressed, e.g....
متن کاملObservation of chicJ radiative decays to light vector mesons.
Using a total of 2.74 x 10(7) decays of the psi(2S) collected with the CLEO-c detector, we present a study of chi(cJ)-->gammaV, where V=rho(0), omega, phi. The transitions chi(c1)-->gammarho(0 and chi(c1)-->gammaomega are observed with B(chi(c1)-->gammarho(0))=(2.43+/-0.19+/-0.22) x 10(-4) and B(chi(c1)-->gammaomega)=(8.3+/-1.5+/-1.2) x 10(-5). In the chi(c1)-->gammarho(0) transition, the final...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2009
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-009-0915-4