Determination of the Σ-Λ mixing angle from QCD sum rules

The Σ-Λ mixing angle is calculated in framework of the QCD sum rules by using the general form of the interpolating current. We find that our prediction for the mixing angle is (1.15 ± 0.05)0. A comparison of our result with the predictions of the quark model, chiral perturbation theory, and lattice QCD approach, and also with the results of the QCD sum rules method existing in literature, is presented.
Journal of High Energy Physics


Determination of f(0) - a(0)(0) mixing angle from QCD sum rules
Alıyev, Tahmasıb; Bilmiş, Selçuk (Springer Science and Business Media LLC, 2018-09-12)
By assuming that the f(0) and a(0)(0) mesons are mixed states of the two-quark-tetraquark, the mixing angle between them is estimated within the QCD sum rules method, and it is obtained that the mixing angle is (6.03 +/- 0.08)degrees. Our prediction on the mixing angle can be checked in further experiments which can shed light on choosing the "right" structure of f(0) and a(0)(0) mesons.
ORBEY, N; DEALY, JM (1991-08-01)
In order to use either a linear or nonlinear model of viscoelasticity to calculate the stress response of a material to various deformations, it is usually necessary to have available an explicit equation for the linear relaxation modulus G(t). The most popular procedure is to use the data from a small-amplitude oscillatory shear experiment to determine the parameters of a generalized Maxwell model. However, this is an ill-posed problem and is not at all a straightforward curve-fitting operation. We comp...
Calculation of the Liquid-Solid Phase Diagram and the Thermodynamic Quantities of the Binary System of Tetradecane and Hexadecane Using the Mean Field Theory
Yurtseven, Hasan Hamit; Tari, O. (2021-10-01)
The T - x phase diagram of a binary system of tetradecane + hexadecane is calculated using the Landau phenomenological model. Expressions derived for the phase lines are fitted to experimental data from the literature and the fitted parameters are determined for the transitions of liquid-solid I, liquid-solid II and solid I-solid II in this binary system. The temperature dependence of the thermodynamic quantities, including the order parameter, susceptibility, enthalpy, entropy, heat capacity, thermal expan...
Calculation of the H-T phase diagram, magnetization and susceptibility in layered structures
Yurtseven, Hasan Hamit; Emre, B.; Acet, M. (2015-11-01)
The magnetic Field-temperature (H-T) phase diagram is calculated using the mean held theory by expanding the free energy in terms of the uniform and staggered magnetization for the ferromagnetic-antiferromagnetic transitions in the La0.6Nd0.4Mn2Si2 multilayer structures. Using our experimental measurements, analysis of the magnetization as a function of the magnetic held at constant temperatures from 45 K to 250 K is performed by a power-law formula close to the ferromagnetic-antiferromagnetic transitions. ...
Stable Ulrich bundles on Fano threefolds with Picard number 2
Genc, Ozhan (2018-01-01)
In this paper, we consider the existence problem of rank one and two stable Ulrich bundles on imprimitive Fano 3-folds obtained by blowing-up one of P-3, Q (smooth quadric in P-4), V-3 (smooth cubic in P-4) or V-4 (complete intersection of two quadrics in P-5) along a smooth irreducible curve. We prove that the only class which admits Ulrich line bundles is the one obtained by blowing up a genus 3, degree 6 curve in P-3. Also, we prove that there exist stable rank two Ulrich bundles with c(1) = 3H on a gene...
Citation Formats
T. Alıyev and M. Savcı, “Determination of the Σ-Λ mixing angle from QCD sum rules,” Journal of High Energy Physics, 2016, Accessed: 00, 2020. [Online]. Available: