Zobrazeno 1 - 10
of 417
pro vyhledávání: '"Gutsche, T"'
The basic shape of di-pion mass spectra in the two-pion transitions of both charmonia and bottomonia states is explained by an unified mechanism based on contributions of the $\pi\pi$, $K\overline{K}$ and $\eta\eta$ coupled channels including their i
Externí odkaz:
http://arxiv.org/abs/1611.07818
It is shown that the basic shape of dipion mass distributions in the two-pion transitions of both charmonia and bottomonia states are explained by an unified mechanism based on the contribution of the $\pi\pi$, $K\overline{K}$ and $\eta\eta$ coupled
Externí odkaz:
http://arxiv.org/abs/1610.07898
The effect of isoscalar S-wave processes $\pi\pi\to\pi\pi,K\overline{K},\eta\eta$ is considered in the analysis of data (from the ARGUS, CLEO, CUSB, Crystal Ball, Belle, BABAR collaborations) on the bottomonia decays --- $\Upsilon(mS)\to\Upsilon(nS)\
Externí odkaz:
http://arxiv.org/abs/1509.02049
The effect of isoscalar S-wave multi-channel pion-pion scattering ($\pi\pi\to\pi\pi,K\bar{K},\eta\eta$) is considered in the analysis of data on decays of the $\Upsilon$-meson family -- $\Upsilon(2S)\to\Upsilon(1S)\pi\pi$, $\Upsilon(3S)\to\Upsilon(1S
Externí odkaz:
http://arxiv.org/abs/1410.3300
Publikováno v:
Phys.Rev. D72 (2005) 053015
In the framework of the see-saw mechanism the normal hierarchy is favorable for the neutrino mass spectrum. For this spectrum we present a detailed calculation of the half-lives of neutrinoless double beta decay for several nuclei of experimental int
Externí odkaz:
http://arxiv.org/abs/hep-ph/0507260
Publikováno v:
Phys.Rev.C71:025202,2005
We analyze the mixing of the scalar glueball with the scalar-isoscalar quarkonia states above 1 GeV in a non-local covariant constituent approach. Similarities and differences to the point-particle Klein-Gordon limit and to the quantum mechanical cas
Externí odkaz:
http://arxiv.org/abs/hep-ph/0408085
The high energy proton-neutron charge exchange scattering reaction is studied in an effective hadron model for the energy range of s from 45.9 to 414.61 GeV*GeV. The main features of the observed differential cross section, the forward peak and the s
Externí odkaz:
http://arxiv.org/abs/hep-ph/0112168
Publikováno v:
Eur.Phys.J.C16:677-681,2000
An alternative to introducing and subsequently renormalizing classical parameters in the expression for the vacuum energy of the MIT bag for quarks is proposed in the massless case by appealing to the QCD trace anomaly and scale separation due to asy
Externí odkaz:
http://arxiv.org/abs/hep-ph/0003050
Publikováno v:
Eur.Phys.J.C17:651-662,2000
From the hypothesis that at zero temperature the square root of the spectral continuum threshold $s_0$ is linearly related to the QCD scale $\Lambda$ we derive in the chiral limit and for temperatures considerably smaller than $\Lambda$ scaling relat
Externí odkaz:
http://arxiv.org/abs/hep-ph/9907351
Publikováno v:
Phys.Rev. D60 (1999) 054010
We investigate the hadronic two-body decay modes of the scalar-isoscalar $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$ states as resulting from the mixture of the lowest lying scalar glueball with the isoscalar states of the ground state $^3P_0$ $Q\bar Q$
Externí odkaz:
http://arxiv.org/abs/hep-ph/9904461