Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Zebarjad, S. Mohammad"'
Publikováno v:
Eur. Phys. J. C (2022) 82:1133
The generalized linear sigma model for mixing among two- and four-quark components of scalar (and psedudosclar) mesons below and above 1 GeV is applied to the $\pi\eta$ channel in which the isovector scalars $a_0(980)$ and $a_0(1450)$ are probed. In
Externí odkaz:
http://arxiv.org/abs/2212.12062
Publikováno v:
Nucl. Phys. B 934, 408-436 (2018)
Scalar glueball is implemented in single nonet linear sigma model (SNLSM) which basically includes lowest lying scalar and pseudoscalar mesons. Our new version of SNLSM involves mixing among scalar matter fields and glueball field which is enforced b
Externí odkaz:
http://arxiv.org/abs/1804.08896
Publikováno v:
Phys. Rev. D 92, 113002 (2015)
The underlying mixing of quark components of scalar mesons is probed in $\pi K$ scattering within a generalized linear sigma model that contains two scalar meson nonets and two pseudoscalar meson nonets (a quark-antiquark and a four-quark). In the le
Externí odkaz:
http://arxiv.org/abs/1511.01623
Publikováno v:
Int. J. Mod. Phys. A 30, 1550134, 2015
Two-body decay widths of lowest lying and next-to-lowest lying scalar and pseudoscalar mesons are studied in Generalized Linear Sigma Model (GLSM) of low-energy QCD. This model which considers mixing between "two quark" and "four quark" chiral nonets
Externí odkaz:
http://arxiv.org/abs/1506.05575
We determine the MS-bar charm quark mass from a charmonium QCD sum rules analysis. On the theoretical side we use input from perturbation theory at O(alpha_s^3). Improvements with respect to previous O(alpha_s^3) analyses include (1) an account of al
Externí odkaz:
http://arxiv.org/abs/1102.2264
Publikováno v:
Nucl.Phys.B813:349-369,2009
We determine the full mass and $q^2$ dependence of the heavy quark vacuum polarization function $\Pi(q^2)$ and its contribution to the total $e^+e^-$ cross section at ${\cal O}(\alpha_s^2)$ and ${\cal O}(\alpha_s^3)$ in perturbative QCD. We use known
Externí odkaz:
http://arxiv.org/abs/0807.4173
Publikováno v:
Can.J.Phys. 77 (1999) 267-278
We rederive the $O(\alpha^5)$ shift of the hydrogen levels in the non-recoil ($m_e/m_P \to 0$) limit using Nonrelativistic QED (NRQED), an effective field theory developed by Caswell and Lepage (Phys. Lett. 167B, 437 (1986)). Our result contains the
Externí odkaz:
http://arxiv.org/abs/hep-ph/9611313
The generalized linear sigma model for mixing among two- and four-quark components of scalar (and psedudosclar) mesons below and above 1 GeV is applied to the $πη$ channel in which the isovector scalars $a_0(980)$ and $a_0(1450)$ are probed. In the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a343794edb1344f6566075bf0627749
Publikováno v:
European Physical Journal C -- Particles & Fields; Dec2022, Vol. 82 Issue 12, p1-26, 26p
The underlying mixing of quark components of scalar mesons is probed in $��K$ scattering within a generalized linear sigma model that contains two scalar meson nonets and two pseudoscalar meson nonets (a quark-antiquark and a four-quark). In the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b46b795d688fd32a27cadf9f9bf2989