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225 papers · 1 filter
Mass spectra of radially and orbitally excited states of mesons
V. Khruschov, V. Savrin, S. Semenov
Meson mass spectra, evaluated in the framework of the relativistic model of quasi-independent quarks, are presented. Mass values are obtained with the help of numerical calculation…
Angular distributions of scattered excited muonic hydrogen atoms
V. N. Pomerantsev, V. P. Popov
Differential cross sections of the Coulomb deexcitation in the collisions of excited muonic hydrogen with the hydrogen atom have been studied for the first time. In the framework o…
INTEGRAL detection of hard X-rays from NGC 6334: Nonthermal emission from colliding winds or an AGN?
A. M. Bykov, A. M. Krassilchtchikov, Yu. A. Uvarov +12
We report the detection of hard X-ray emission from the field of the star-forming region NGC 6334 with the the International Gamma-Ray Astrophysics Laboratory INTEGRAL. The JEM-X m…
Scalar Correlator at O(alpha_s^4), Higgs Decay into b-quarks and Bounds on the Light Quark Masses
P. A. Baikov, K. G. Chetyrkin, J. H. Kühn
We compute, for the first time, the absorptive part of the massless correlator of two quark scalar currents in five loops. As physical applications we consider the O(alpha_s^4) cor…
Improved Measurement of the b-bbar Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions
B Collaboration, I. Abt
A new measurement of the b-bbar production cross section in 920 GeV proton-nucleus collisions is presented by the HERA-B collaboration. The b-bbar production is tagged via inclusiv…
Weak Solutions to the Stochastic Porous Media Equation via Kolmogorov Equations: The Degenerate Case
Viorel Barbu, Vladimir I. Bogachev, Giuseppe Da Prato +1
A stochastic version of the porous medium equation with coloured noise is studied. The corresponding Kolmogorov equation is solved in the space where is an infinites…