Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Vector meson dominance, chiral loops, sigma meson, and omega-rho mixing in omega ->pi(0)pi(0)gamma decay
Download
index.pdf
Date
2003-04-01
Author
Gokalp, A
Kucukarslan, A
Yılmaz, Osman
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
66
views
18
downloads
Cite This
In an attempt to explain the latest experimental result about the branching ratio of omega-->pi(0)pi(0)gamma decay, we reexamine the mechanism of this decay in a phenomenological framework in which the contributions of vector meson dominance, chiral loops, sigma-meson intermediate state amplitudes, and the effects of omega-rho mixing are considered. We conclude that in order to obtain the experimental value of the branching ratio B(omega-->pi(0)pi(0)gamma) the sigma-meson amplitude, which makes a substantial contribution, should be included in the reaction mechanism and the effects of omega-rho mixing should be taken into account. We also estimate the coupling constant g(omegasigmagamma) as g(omegasigmagamma)=0.11, which is much smaller than the values suggested by light cone QCD sum rule calculations.
URI
https://hdl.handle.net/11511/94902
Journal
PHYSICAL REVIEW D
DOI
https://doi.org/10.1103/physrevd.67.073008
Collections
Department of Physics, Article
Suggestions
OpenMETU
Core
Vector meson dominance, chiral loops, sigma meson, and omega-rho mixing in omega ->pi(0)pi(0)gamma decay
Gokalp, A; Kucukarslan, A; Yılmaz, Osman (2003-04-01)
In an attempt to explain the latest experimental result about the branching ratio of omega-->pi(0)pi(0)gamma decay, we reexamine the mechanism of this decay in a phenomenological framework in which the contributions of vector meson dominance, chiral loops, sigma-meson intermediate state amplitudes, and the effects of omega-rho mixing are considered. We conclude that in order to obtain the experimental value of the branching ratio B(omega-->pi(0)pi(0)gamma) the sigma-meson amplitude, which makes a substantia...
sigma-meson and omega-rho mixing effects in omega ->pi(+)pi(-)gamma decay
Gokalp, A; Kucukarslan, A; Solmaz, S; Yılmaz, Osman (2003-08-01)
We calculate the branching ratio of omega --> pi(+)pi(-)gamma decay in a phenomenological framework in which the contributions of VMD, chiral loops, sigma-meson intermediate state amplitudes and the effects of omega-rho mixing axe considered. We conclude that the sigma-meson intermediate state amplitude-and omega-rho mixing make substantial contribution to the branching ratio.
Heavy chi(Q) (2) tensor mesons in QCD
Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2010-06-14)
The masses and decay constants of the ground state heavy chi(Q2) (Q = b, c) tensor mesons are calculated in the framework of the QCD sum rules approach. The obtained results on the masses are in good consistency with the experimental values. Our predictions on the decay constants can be verified in the future experiments.
Scalar sigma meson effects in radiative rho(0)-meson decays
Gokalp, A; Solmaz, S; Yılmaz, Osman (2003-04-01)
We study the radiative rho(0)-->pi(+)pi(-)gamma and rho(0)-->pi(0)pi(0)gamma decays and we calculate their branching ratios using a phenomenological approach by adding to the amplitude calculated within the framework of chiral perturbation theory and vector meson dominance the amplitude of sigma-meson intermediate state. Our results for the branching ratios are in good agreement with the experimental values.
Tensor form factors of nucleon in QCD
ERKOL, GÜRAY; Özpineci, Altuğ (2011-10-25)
We extract the isovector tensor nucleon form factors, which play an important role in understanding the transverse spin structure of the nucleon when related to the quark helicity-flip generalized parton distributions via their first moments. We employ the light-cone QCD sum rules to leading order in QCD and include distribution amplitudes up to twist 6 in order to calculate the three tensor form factors H(T). E(T) and (H) over bar (T). Our results agree well with those from other approaches in the low and ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
A. Gokalp, A. Kucukarslan, and O. Yılmaz, “Vector meson dominance, chiral loops, sigma meson, and omega-rho mixing in omega ->pi(0)pi(0)gamma decay,”
PHYSICAL REVIEW D
, vol. 67, no. 7, pp. 0–0, 2003, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/94902.