Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Gerasimov, S B"'
Autor:
Khrykin, A. S., Gerasimov, S. B.
Publikováno v:
ECONFC070910:250,2007
We show that the resonance-like structure found by the \emph{CELSIUS-WASA Collaboration} in the two-photon invariant mass spectrum of the reaction $pp \to pp \gamma \gamma$ is rather a signature of the $NN$-decoupled dibaryon resonance $d^\star_1$(19
Externí odkaz:
http://arxiv.org/abs/0710.3331
Autor:
Gerasimov, S. B.
Publikováno v:
Czech.J.Phys.56:F195-F201,2006
The questions on the presense and quantitative role of the constant terms in the real part of the high-energy photon-nucleon and photon-nucleus amplitudes representing the contribution of the non-Regge (the fixed j=0-pole) singularities in the finite
Externí odkaz:
http://arxiv.org/abs/hep-ph/0701073
Autor:
Gerasimov, S. B., Majewski, M.
We compare the virtues of two options for the isospin (I=1 or 2) of the apparently exotic dibarion resonance d_1^*(1956), as it is noticed by the DIB2gamma Collaboration (JINR) in the reaction pp -> 2 gamma X below the pion threshold, and using recen
Externí odkaz:
http://arxiv.org/abs/nucl-th/0504025
Autor:
Gerasimov, S. B., Majewski, M.
The relation between the ratio Gamma_{ee}(psi')/Gamma_{ee}(J/psi) and Gamma_{2gamma}(eta_{c}')/Gamma_{2gamma}(eta_{c}), expressed in terms of the configuration mixing amplitudes induced by the contact spin-spin interaction of quarks in the ground and
Externí odkaz:
http://arxiv.org/abs/hep-ph/0504067
Autor:
Gerasimov, S. B.
Publikováno v:
Phys.Part.Nucl. 35 (2004) S102-S104
The role of nonvalence, {\it e.g.} sea quarks and/or meson degrees of freedom in static and quasistatic baryon electroweak observables, is discussed within the phenomenological sum rule approach. The inclusion of nonvalence degrees of freedom in the
Externí odkaz:
http://arxiv.org/abs/hep-ph/0402166
Autor:
Gerasimov, S. B.
The earlier suggested and developed idea of quark-hadron duality, underlying "bremsstrahlung-weighted" sum rules for total or polarized photon interaction cross sections, is applied to the description of excitation of light scalar mesons in gamma-gam
Externí odkaz:
http://arxiv.org/abs/hep-ph/0311080
Autor:
Gerasimov, S. B.
The idea of quark-hadron duality is developed and applied to integral sum rules for the photoexcitation of meson resonances. Some applications of the presented approach in the light and heavy quark sectors are made, and the role of the scalar diquark
Externí odkaz:
http://arxiv.org/abs/hep-ph/0212281
Autor:
Gerasimov, S. B.
The role of nonvalence, e.g., sea quarks and/or meson degrees of freedom in static electroweak baryon observables is briefly discussed.
Comment: 8 pages, Latex, no figures; prepared for Mini-Workshop on Hadron Structure with Quark Dynamics, Dec.
Comment: 8 pages, Latex, no figures; prepared for Mini-Workshop on Hadron Structure with Quark Dynamics, Dec.
Externí odkaz:
http://arxiv.org/abs/hep-ph/0208049
Autor:
Khrykin, A. S., Boreiko, V. F., Budyashov, Yu. G., Gerasimov, S. B., Khomutov, N. V., Sobolev, Yu. G., Zorin, V. P.
Publikováno v:
Phys.Rev. C64 (2001) 034002
The energy spectrum for high energy $\gamma$-rays ($E_\gamma \geq 10$ MeV) from the process $pp \to \gamma \gamma X$ emitted at $90^0$ in the laboratory frame has been measured at an energy below the pion production threshold, namely, at 216 MeV. The
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0012011
Autor:
Gerasimov, S. B.
Following the idea of the quark-hadron duality we present, within the constituent quark model approach, the relations between different bremsstrahlung-weihgted integrals of the nucleon resonance photoexcitation cross sections and correlation function
Externí odkaz:
http://arxiv.org/abs/hep-ph/0012339