Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Gubin, V. V."'
Autor:
Achasov, N. N., Gubin, V. V.
Publikováno v:
Phys.Rev.D64:094016,2001
We study the decay $\phi\to\gamma K^+K^-$ taking into account the scalar mesons production $\phi\to\gamma(f_0+a_0) \to\gamma K^+K^-$ and the final state radiation. We note that the relative sign between the final state radiation amplitude and the sca
Externí odkaz:
http://arxiv.org/abs/hep-ph/0106321
Autor:
Achasov, N. N., Gubin, V. V.
Publikováno v:
Phys.Rev. D63 (2001) 094007; Phys.Atom.Nucl. 65 (2002) 1528-1536
hep-ph/0104081 was put by accident insdead of "replace hep-ph/0101024"(v2). We apologize very much.
Comment: Withdrawal
Comment: Withdrawal
Externí odkaz:
http://arxiv.org/abs/hep-ph/0104081
Autor:
Achasov, N. N., Gubin, V. V.
Publikováno v:
Phys.Rev. D61 (2000) 117504
It is shown that the study of the $\omega-\rho^0$ interference pattern in the $J/\psi\to (\rho^0+\omega)\eta\to\pi^+\pi^-\eta$ decay provides the evidence for the large (nearly $90^\circ$) relative phase between the one-photon and the three-gluon dec
Externí odkaz:
http://arxiv.org/abs/hep-ph/9912393
Autor:
Achasov, N. N., Gubin, V. V.
Publikováno v:
Phys.Rev. D62 (2000) 058501
We comment on the paper by Benayoun, DelBuono, Eidelman, Ivanchenko, and O'Connell [Phys. Rev. {\bf D 59}, 114027 (1999)]. We show that the decay $\phi\to\pi^0\gamma$ is absent in model of the nonet symmetry and SU(3) breaking suggested by authors.
Externí odkaz:
http://arxiv.org/abs/hep-ph/9906314
Autor:
Achasov, N. N., Gubin, V. V.
The potentialities of the production of the $a_0(980)$ and $f_0(980)$ mesons in the $\phi$ radiative decays are considered.
Comment: Talk presented by V.V. Gubin at International workshop $e^+e^-$ collisions from $\phi$ to $J/\psi$, Budker Insti
Comment: Talk presented by V.V. Gubin at International workshop $e^+e^-$ collisions from $\phi$ to $J/\psi$, Budker Insti
Externí odkaz:
http://arxiv.org/abs/hep-ph/9904439
Autor:
Achasov, N. N., Gubin, V. V.
Publikováno v:
JETP Lett.67:464-469,1998
We perform the analysis of the preliminary data on $e^+e^-\to\phi\to\gamma f_0(980)\to\gamma\pi^0\pi^0$ reaction simultaneously with the data on $\pi\pi$ scattering and reactions $J/\psi\to\phi\pi^+\pi^-$ and $K^-p\to\pi^+\pi^-(\Lambda,\Sigma)$. It i
Externí odkaz:
http://arxiv.org/abs/hep-ph/9802327
Autor:
Achasov, N. N., Gubin, V. V.
The potentialities of the production of the $a_0$ and $f_0$ mesons in the $\phi$ radiative decays are considered based on a new two-channel analysis of the $\pi\pi$ scattering in a energy region near 1 GeV. We predict $BR(\phi\to\gamma f_0(980))\sim1
Externí odkaz:
http://arxiv.org/abs/hep-ph/9710536
Autor:
Achasov, N. N., Gubin, V. V.
Publikováno v:
Phys.Rev. D57 (1998) 1987-1990
We describe the interference between amplitudes $e^ + e^-\to\rho\to\gamma\pi^+\pi^-$ and $e^ + e^-\to\phi\to\gamma (f_0 + \sigma) \to\gamma\pi^ + \pi^-$, with regard to the phase of the elastic $\pi\pi$ scattering background and mixing of the $f_0$ a
Externí odkaz:
http://arxiv.org/abs/hep-ph/9706363
Autor:
Achasov, N. N., Gubin, V. V.
Publikováno v:
Phys.Rev. D56 (1997) 4084-4097
It is shown that the reactions $e^+e^-\to\gamma\pi^0\pi^0(\eta)$ give a good chance for observing scalar $a_0$ and $f_0$ mesons. In the photon energy region less then 100 MeV the vector meson contributions $e^+e^-\to V^0\to\pi^0 V'^0\to\gamma\pi^0\pi
Externí odkaz:
http://arxiv.org/abs/hep-ph/9703367
Publikováno v:
Phys.Rev.D55:2672-2682,1997
We describe the interference between amplitudes $e^+e^- \to \rho \to \gamma\pi^+\pi^-$ and $e^+e^- \to \phi \to \gamma f_0 \to \gamma\pi^+\pi^-$, where $f_0$ meson is considered in the frameworks of the four-quark model and the model of the scalar $K
Externí odkaz:
http://arxiv.org/abs/hep-ph/9610282