Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons™

Open Access. Powered by Scholars. Published by Universities.®

2013

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 8551 - 8580 of 8928

Full-Text Articles in Physical Sciences and Mathematics

Full Issue 42(1) Jan 2013

Full Issue 42(1)

International Journal of Speleology

All articles in Volume 42 Issue 1. Does not include cover image.

Go to article

Bound States And The Oscillator Strengths For The Klein-Gordon Equation Under Möbius Square Potential, Hassan Hassanabadi, Bentol Hoda Yazarloo, Saber Zarrinkamar Jan 2013

Bound States And The Oscillator Strengths For The Klein-Gordon Equation Under Möbius Square Potential, Hassan Hassanabadi, Bentol Hoda Yazarloo, Saber Zarrinkamar

Turkish Journal of Physics

The Klein-Gordon equation under the equal scalar and vector Möbius square potentials in D-dimensions is solved by using the Nikiforov-Uvarov method. The energy eigenvalues and the corresponding eigenfunctions are obtained and numerically calculated. The oscillator strengths are determined and discussed in terms of parameters of the system.

Go to article

Development And Utilization Of A Retarding Analyzer For Field Emission Investigation Of Lab_6/W Emitter, Ahmed Abdurrahman Ahmed Al-Tabbakh, Mahendra A. More, Dilip S. Joag Jan 2013

Development And Utilization Of A Retarding Analyzer For Field Emission Investigation Of Lab_6/W Emitter, Ahmed Abdurrahman Ahmed Al-Tabbakh, Mahendra A. More, Dilip S. Joag

Turkish Journal of Physics

A cold field emission from LaB_6/W-coated cathodes has been investigated with a high-accuracy and low-cost retarding field analyzer instrument. Guidelines are provided for measurements of Fowler-Nordheim (FN) characteristics and total energy distributions using a single set-up and direct detection technique to address presumed shortages in sophisticated instrumental requirements for integral investigation. Electron emission from LaB_6 nanoprotrusions, deposited on a tungsten microtip, was successfully investigated. Results emphasize a metallic behavior of the emitter in accordance with the FN theory. No size effects were observed for protrusions of 300 nm in radii.

Go to article

Planar Waveguide With Left-Handed Material Guiding Film For Refractometry Applications, Taher M. El-Agez, Sofyan A. Taya, Mohamed M. Shabat, Hani M. Kullab Jan 2013

Planar Waveguide With Left-Handed Material Guiding Film For Refractometry Applications, Taher M. El-Agez, Sofyan A. Taya, Mohamed M. Shabat, Hani M. Kullab

Turkish Journal of Physics

A symmetric 3-layer slab waveguide with a left-handed material as a guiding layer is examined analytically for cover refractive index detection. The TM mode dispersion relation of the proposed waveguide is investigated. The sensitivity of the proposed sensor to changes in the cover refractive index and the power flowing within each layer are presented. Some unusual features are found; for example, the sensitivity of the proposed sensor is negative. Moreover, the sensitivity improvement compared with the conventional 3-layer waveguide sensor is approximately a factor of 6.

Go to article

Recombination Mechanisms In Hydrogenated Silicon Nanocrystalline Thin Films, Zaki M. Saleh, Salam M. Kmail, Samah F. Assaf, Atif F. Qasrawi Jan 2013

Recombination Mechanisms In Hydrogenated Silicon Nanocrystalline Thin Films, Zaki M. Saleh, Salam M. Kmail, Samah F. Assaf, Atif F. Qasrawi

Turkish Journal of Physics

The photoconductivity dependences on temperature and illumination intensity were investigated for thin films of hydrogenated nanocrystalline silicon (nc-Si:H) grown by very-high-frequency, plasma-enhanced chemical vapor deposition. The nanocrystalline phase was achieved by heavy hydrogen dilution of silane (SiH_4). We find that the activation energy of the photoconductivity is sensitive to the incident illumination intensity for illumination intensities below 6 mW/cm^2. The photocurrent follows a power-law dependence on illumination intensity (I_{ph}\propto F^{gamma}), with gamma ranging from 0.36 to 0.83. The illumination dependence of the photocurrent suggests 2 different recombination mechanisms depending on temperature. In the lower temperature regime (300-340 K), recombination appears …

Go to article

Effect Of Microwave Sintering On Grain Size And Dielectric Properties Of Barium Titanate, Praveena Kuruva, Uma Maheshwara Singh Rajaputra, Srinath Sanyadanam, Ramana Murthy Sarabu Jan 2013

Effect Of Microwave Sintering On Grain Size And Dielectric Properties Of Barium Titanate, Praveena Kuruva, Uma Maheshwara Singh Rajaputra, Srinath Sanyadanam, Ramana Murthy Sarabu

Turkish Journal of Physics

In the present paper, nanosized barium titanate (BaTiO_3) powders were synthesized by microwave hydrothermal method. The structural characterization of as-prepared powders was investigated using X-ray diffraction and Fourier transform infrared spectroscopy. The particle size was estimated using a transmission electron microscope. The nanopowders were sintered at different temperatures using a microwave furnace, followed by characterizations such as X-ray diffraction and field emission scanning electron microscopy. The dielectric constant behavior was observed as a function of frequency (100 Hz to 1 MHz) and temperature. The ferroelectric nature was confirmed from polarization-electric field loops.

Go to article

Vacuum Properties Of Tarla, Hüsnü Aksakal, Ertan Arikan, Zafer Nergi̇z Jan 2013

Vacuum Properties Of Tarla, Hüsnü Aksakal, Ertan Arikan, Zafer Nergi̇z

Turkish Journal of Physics

The Turkish Accelerator and Radiation Laboratory at Ankara (TARLA) is a part of the Turkish Accelerator Center project, which was designed to produce an infrared free electron laser in the wavelength band of 2-250 mu m. The beamline of TARLA consists of 4 major sections: injector, beam transport line with linacs, optical cavities, and dump. All system components must be kept under ultrahigh vacuum standards to prevent beam scattering with residual gas. In the present study, the vacuum requirements of the beamline are defined and simulation vacuum and gas flow in the accelerator are presented.

Go to article

Level Structure Of ^{210}Po By Means Of Surface Delta Interaction, Ali Khalaf Hasan, Abdul Ridha Hussain Subber Jan 2013

Level Structure Of ^{210}Po By Means Of Surface Delta Interaction, Ali Khalaf Hasan, Abdul Ridha Hussain Subber

Turkish Journal of Physics

Within the framework of the shell model, we consider the residual interaction to be a surface delta interaction. This interaction has been applied in the calculation of the energy levels of ^{210}Po, which belong to N = 126 magic closed shell nuclei. The pure and the configuration mixings are applied in the calculations of matrix elements. The predicted energy levels are compared with experimental data.

Go to article

Identification Of Spontaneous Fission Fragments By Using Thermally Annealed Padc Films, Abdallah F. Saad, Nama Abdelssadk Hamed, Yasin Kailani Abdalla Jan 2013

Identification Of Spontaneous Fission Fragments By Using Thermally Annealed Padc Films, Abdallah F. Saad, Nama Abdelssadk Hamed, Yasin Kailani Abdalla

Turkish Journal of Physics

One of main requirements in applied nuclear physics is the need of a detector capable of detecting and differentiating different particles. Thus, the fission products from a ^{252}Cf radioactive source, after about 12 half-life periods of alpha decay, are registered using virgin and annealed CR-39 polyallyldiglycol carbonate (PADC) films. In the case of virgin CR-39, a single peak appears corresponding to the heavy group of these products, while the other peak related to the light group is obscured. The annealed CR-39 detectors, on the other hand, were demonstrated to be highly sensitive to the fission fragments, and as a result …

Go to article

Effects Of The Different Types Of Nuclear Radiations On The Optically Stimulated Luminescence, Ayşe Güneş Tanir, Mustafa Hi̇cabi̇ Bölükdemi̇r, Tülay Neşe Kizilirmak Jan 2013

Effects Of The Different Types Of Nuclear Radiations On The Optically Stimulated Luminescence, Ayşe Güneş Tanir, Mustafa Hi̇cabi̇ Bölükdemi̇r, Tülay Neşe Kizilirmak

Turkish Journal of Physics

This study aims to investigate the effects of different nuclear radiation fields on an optically stimulated luminescence (OSL) dosimeter using Al_2O_3:C material. The Al_2O_3:C material was exposed to alpha- and beta-particles and gamma-photons, and the luminescence signals were measured by stimulation with a blue light emitting diode. It is concluded that the OSL technique is suitable for obtaining an adequate blue light stimulated luminescence signal in alpha, beta, and gamma radiation fields, and if the source activity was low, the statistical distributions were large.

Go to article

Magnetic Wiggler-Assisted Third-Harmonic Generation Of A Gaussian Laser Pulse In Plasma, Hirdesh Sharma, Harsha Jaloree, Jetendra Parashar Jan 2013

Magnetic Wiggler-Assisted Third-Harmonic Generation Of A Gaussian Laser Pulse In Plasma, Hirdesh Sharma, Harsha Jaloree, Jetendra Parashar

Turkish Journal of Physics

A Gaussian laser pulse propagating through plasma in the presence of a magnetic wiggler produces third-harmonic radiation. The wiggler's magnetic field provides additional momentum required for phase matching. The required wiggler wave number is sensitive to pulse duration and amplitude. The efficiency of the process is significant at the instant at which the phase matching condition is satisfied.

Go to article

Exact Solution Of Frw Perfect Fluid Model Interacting With Zero-Rest-Mass Scalar Field And Electromagnetic Field In B-D Theory, Kangujam Priyokumar Singh, Chungkham Gokulchandra Singh Jan 2013

Exact Solution Of Frw Perfect Fluid Model Interacting With Zero-Rest-Mass Scalar Field And Electromagnetic Field In B-D Theory, Kangujam Priyokumar Singh, Chungkham Gokulchandra Singh

Turkish Journal of Physics

Considering a spherically symmetric nonstatic cosmological flat model of the Robertson-Walker universe, the problem of perfect fluid distribution interacting with the gravitational field in the presence of a zero-rest-mass scalar field and electromagnetic field in Brans-Dicke (B-D) theory has been investigated. Exact solutions are obtained by using a general approach of solving the partial differential equations and it has been observed that the electromagnetic field cannot survive the cosmological flat model due to the action caused by the presence of the zero-rest-mass scalar field, and the isotropic pressure p turns out to be negative. The pressure and density are found …

Go to article

Quasi-Exact Thermodynamic Properties Of A Relativistic Spin-Zero System Under Cornell And Generalized Morse Potentials, Bentol Hoda Yazarloo, Hassan Hassanabadi, Saber Zarrinkamar Jan 2013

Quasi-Exact Thermodynamic Properties Of A Relativistic Spin-Zero System Under Cornell And Generalized Morse Potentials, Bentol Hoda Yazarloo, Hassan Hassanabadi, Saber Zarrinkamar

Turkish Journal of Physics

The thermodynamic properties of a relativistic spin-zero system are investigated via the Klein-Gordon equation under the Cornell and generalized Morse potentials. In particular, the partition function and mean and free energies are calculated and their behavior versus variations of the potential coefficients is presented.

Go to article

Theoretical Modeling And Numerical Solutions Of Some Standard Thermoluminescence Detector Crystals, Erdem Uzun Jan 2013

Theoretical Modeling And Numerical Solutions Of Some Standard Thermoluminescence Detector Crystals, Erdem Uzun

Turkish Journal of Physics

MCP-100, MYS-N, MTS-7, MTS-100, and MCP-N standard thermoluminescence detector materials are annealed and irradiated. Glow curves and all trap parameters are determined. For these materials new theoretical energy band models are suggested and differential equations governing the charge carrier traffics are derived. The equations are solved by using computer-based numerical methods. During the simulations, experimental data measured in the previous step are given to computer code as the initial conditions. Experimental and numerical results show that the electron-band structures of standard thermoluminescence crystals are represented fairly well by the suggested models.

Go to article

Defect Studies In Strain-Relaxed Si_{1-X}Ge_X Alloys, Şeref Kalem Jan 2013

Defect Studies In Strain-Relaxed Si_{1-X}Ge_X Alloys, Şeref Kalem

Turkish Journal of Physics

Raman light scattering, low-temperature photoluminescence, light-scattering tomography, and hydrogenation were used to investigate optical properties of defects in strain-relaxed Si_{1-x}Ge_x (0.05 \le x \le 0.50) alloys. The photoluminescence emission was characterized by typical zero-phonon, phonon-assisted, and dislocations-related emissions, which are dependent on Ge composition x. However, luminescence spectra exhibited above band-gap features, which are likely associated with the presence of Si-rich regions in the alloys. The results are correlated with light-scattering tomography, revealing the presence of dislocations and Si precipitates. The excess peak at 519 cm^{-1} in Ge-rich samples is supportive of this observation. At low Ge content, a dislocation-related …

Go to article

Symmetry And The Order Of Events In Time: Description Of A Reversible Thermal Energy Converter Composed Of Negative Mass, Randy Wayne Jan 2013

Symmetry And The Order Of Events In Time: Description Of A Reversible Thermal Energy Converter Composed Of Negative Mass, Randy Wayne

Turkish Journal of Physics

In a previous paper [1], we analyzed the sequence of events that occurs in the time domain of a reversible cyclical thermal energy converter using the Gibbs equation and showed that even when there is no net change of entropy there is an asymmetrical order of quasi-static states along the time axis, when thermal energy is converted into mechanical pressure-volume work. The spontaneous evolution towards an equilibrium state, which is characterized by the unidirectional transport of entropy from the hot reservoir to the cold reservoir, is coincident with this asymmetrical order of events. In this paper, we \"mend\" the above …

Go to article

Thermodynamic Properties Of The Noncommutative Black Hole In (Z = 3)-Horava-Lifshitz Gravity, Mourad Nach, Khadija Bilal, My Brahim Sedra, Abderrahman El Boukili Jan 2013

Thermodynamic Properties Of The Noncommutative Black Hole In (Z = 3)-Horava-Lifshitz Gravity, Mourad Nach, Khadija Bilal, My Brahim Sedra, Abderrahman El Boukili

Turkish Journal of Physics

In this work, we investigate the effects of noncommutative spaces on the Horava-Lifshitz black hole. We construct the black hole solutions in the noncommutative space of (z = 3)-Horava-Lifshitz gravity. We calculate the horizon and the thermodynamic properties such as the Hawking temperature, the ADM-Mass, and entropy, which reduce to their commutative limits when the noncommutativity parameter tends to zero.

Go to article

One Proton Emission With Structural Effects In Medium Mass Nuclei, Chandrasekaran Anu Radha, Velayudham Ramasubramanian Jan 2013

One Proton Emission With Structural Effects In Medium Mass Nuclei, Chandrasekaran Anu Radha, Velayudham Ramasubramanian

Turkish Journal of Physics

In this work proton emission from deformed nuclei is discussed with the quadrupole deformation values. The deformation is investigated using potential energy surface plots. The identified proton emitters are found to have odd Z since the unpaired proton is less bound, and they are readily available for emission. Using the exotic decay model to the medium mass nuclei, the new proton emitters are analyzed with the inclusion of centrifugal barrier. The proton decay half-lives are calculated and compared with literature values. A discussion pertaining to single proton emission with structural effect will be a pivotal point in our study.

Go to article

Spin Assignment And Behavior Of Superdeformed Bands In A\\Sim 150 Mass Region, Ali Khalaf, Manal Sirag, Mahmoud Taha Jan 2013

Spin Assignment And Behavior Of Superdeformed Bands In A\\Sim 150 Mass Region, Ali Khalaf, Manal Sirag, Mahmoud Taha

Turkish Journal of Physics

The smoothed experimental dynamical moment of inertia J^{(2)} values were fitted with a theoretical version using the Harris three parameter formula in even powers of angular frequency \omega, derived for results from the cranking model. The expansion parameters were adjusted by using a computer simulated search program. The best expansion parameters from the fit were used to assign the spins of the superdeformed (SD) rotational bands (RB) by integrating the calculated J^{(2)}. The data set includes 23 RB's in 11 SD nuclei, which show no evidence of either irregular behavior near the bottom of the bands or abrupt angular momentum …

Go to article

The Nonrelativistic Molecular Tietz Potential, Hossein Nikoofard, Elham Maghsoodi, Saber Zarrinkamar, Mohsen Farhadi, Hassan Hassanabadi Jan 2013

The Nonrelativistic Molecular Tietz Potential, Hossein Nikoofard, Elham Maghsoodi, Saber Zarrinkamar, Mohsen Farhadi, Hassan Hassanabadi

Turkish Journal of Physics

We solve the 3-dimensional Schrödinger equation under the Tietz potential by an approximate analytical scheme. A Pekeris-type approximation and the Nikiforov--Uvarov technique are used in the calculations to report the arbitrary-state eigenfunctions and eigenvalues and we calculate some useful expectation values of the Tietz potential using the Hellmann-Feynman theorem and obtain the oscillator strength.

Go to article

Dkp Equation Under Scalar And Vector Kratzer Potentials, Bentol Hoda Yazarloo, Hassan Hassanabadi, Saber Zarrinkamar Jan 2013

Dkp Equation Under Scalar And Vector Kratzer Potentials, Bentol Hoda Yazarloo, Hassan Hassanabadi, Saber Zarrinkamar

Turkish Journal of Physics

Approximate analytical solutions of Duffin-Kemmer-Petiau (DKP) equation under scalar and vector Kratzer terms are obtained via an elegant ansatz after successive transformations. The results, after application of proper fits, can be used in the study of relativistic spinless particles in various branches of physics such as cosmology and theoretical nuclear physics including meson spectroscopy.

Go to article

Empirical Rule For The Pair Break Mechanism In Three-Quasiparticle Rotational Bands, Sukhjeet Singh Dhindsa, Sushil Kumar, Jatinder Kumar Sharma Jan 2013

Empirical Rule For The Pair Break Mechanism In Three-Quasiparticle Rotational Bands, Sukhjeet Singh Dhindsa, Sushil Kumar, Jatinder Kumar Sharma

Turkish Journal of Physics

An empirical rule on the basis of odd-even mass difference is suggested for the breaking of a proton pair or a neutron pair in odd-A nuclei to form a lower lying 3-quasiparticle state. If \Delta_p is smaller than \Delta_n, the proton pair breaks; on the other hand, if \Delta_n is smaller than \Delta_p, the neutron pair breaks down and forms a lower lying 3-quasiparticle state in an odd-A nuclide. This rule appears not only purely based on the proton paring/neutron pairing energy balancing condition but also on particular excitation energy, which is \ge 1 MeV in the case of the …

Go to article

Investigation Of Dominant States In The Collisions Of Ar Vii And Kr Xxiv With H_2 And He Targets, Abdel Aziz Habib, Alaa Abo Zalam, Hassan Ramadan Jan 2013

Investigation Of Dominant States In The Collisions Of Ar Vii And Kr Xxiv With H_2 And He Targets, Abdel Aziz Habib, Alaa Abo Zalam, Hassan Ramadan

Turkish Journal of Physics

In thermal plasma, the ion--atom collisions proceed most probably through resonance processes. One of the important processes is the resonant transfer excitation followed by emission of X-rays (RTEX), which causes self-cooling for plasma. In addition, it is identical to the dielectronic recombination (DR) in electron-ion collisions. The present work deals with the calculation of DR cross-sections (\sigma^{DR}s) and DR rate coefficients (\alpha^{DR}s) as well as RTEX cross-sections (\sigma^{RTEX}s) for Mg-like ions [Ar^{6+} and Kr^{24+}] with L-shell and K-shell excitation for \Deltan = 0 and \Delta n \neq 0. Comparison between the present results and other calculations for the rates are …

Go to article

Study Of Zone Center Phonons In Wolframite Znwo_4, Ruby Jindal, Murari Mohan Sinha, Hem Chandra Gupta Jan 2013

Study Of Zone Center Phonons In Wolframite Znwo_4, Ruby Jindal, Murari Mohan Sinha, Hem Chandra Gupta

Turkish Journal of Physics

A short-range force constant model was applied to investigate the phonons in wolframite ZnWO_4 crystals in their monoclinic phase having space group P2/c and symmetry C_{2h}. The normal symmetry coordinates for the monoclinic wolframite were computed. The zone center phonons were calculated by using 8 stretching and 6 bending force constants. The calculated results are in very good agreement with the observed ones. The infrared frequencies were assigned for the first time. The potential energy distribution was also investigated for determining the significance of the contribution from each force constant toward the Raman and infrared wavenumbers.

Go to article

A Simple Method To Extract The Parameters Of The Single-Diode Model Of A Pv System, Ahmed A. El Tayyan Jan 2013

A Simple Method To Extract The Parameters Of The Single-Diode Model Of A Pv System, Ahmed A. El Tayyan

Turkish Journal of Physics

This article suggests a simple method of modeling and simulation of photovoltaic systems. The main goal is to find the parameters (I_{ph}, I_o, R_s, R_{sh}, and a) of the single-diode model by adjusting the P-V curve and/or I-V curve at parameters provided by the manufacturer specification sheets (I_{sc}, V_{oc}, I_{mp}, and V_{mp}). An empirical model is incorporated into the single-diode model in order to remove its implicit nature and to ease the calculations. Calculations using this method can be extended to generate the I-V curves at temperatures and irradiances other than the standard test condition (STC)

Go to article

Study Of Solid-State Stability Of The Zoto Binary System, Sandeep A. Waghuley Jan 2013

Study Of Solid-State Stability Of The Zoto Binary System, Sandeep A. Waghuley

Turkish Journal of Physics

The ZOTO binary system contains different compositions of zinc oxide (ZnO) and tin oxide (SnO_2). These are important semiconductors and have been intensively explored for various applications. SnO_2, ZnO, and different mole ratios (70:30, 40:60, 30:70, and 20:80 SnO_2:ZnO) of the ZOTO system were prepared through proper thermal treatment in powder form. The comparative solid-state stability was investigated using thermogravimetric and differential thermal analysis (TG-DTA). The stability study showed that the SnO_2 material absorbs much lower heat (Ea = -72.06 kJ/g mol) compared with ZnO and their compositions. Thus the SnO_2 material shows stability at near room temperature operation. The …

Go to article

Molecular Dynamic Simulation On Iron Corrosion-Reduction In High Temperature Molten Lead-Bismuth Eutectic, Artoto Arkundato, Zaki Su'ud, Mikrajuddin Abdullah, Widayani Sutrisno Jan 2013

Molecular Dynamic Simulation On Iron Corrosion-Reduction In High Temperature Molten Lead-Bismuth Eutectic, Artoto Arkundato, Zaki Su'ud, Mikrajuddin Abdullah, Widayani Sutrisno

Turkish Journal of Physics

Molecular dynamic simulation on iron in high-temperature molten lead-bismuth eutectic has been carried out to investigate the iron corrosion and its mitigation. The aim of the work is to investigate the corrosion and evaluate proper oxygen content of injection for significant and effective reduction. To study the phenomena we calculated the diffusion coefficients, radial distribution functions and mean square displacement of iron, and also observed the micro-structure of iron before and after oxygen injection into coolant. The present calculation shows that a significant and effective reduction of corrosion can be achieved by injection of 7.68 \times 10^{-2}-1.55 \times 10^{-1} wt\% …

Go to article

Optimization Of Laser Marking With The Help Of Simulation Models, Lyubomir Kostadimov Lazov, Nikolay Angelov Petrov Jan 2013

Optimization Of Laser Marking With The Help Of Simulation Models, Lyubomir Kostadimov Lazov, Nikolay Angelov Petrov

Turkish Journal of Physics

This article covers the results of several numerical experiments carried out with specific software working under MATLAB for marking of tool steel and electronic elements. CuBr and Nd:YAG lasers were used in this study. Simulations with 3 different durations of pulse of laser radiation were achieved. Numerical calculations were performed with values (for laser sources and technological parameters) based on real experiments.

Go to article

Quantitative Characterization Of Atmospheric Desert Particles Via Multispectral Lidar Method (Uv To Ir), Using Genetic Algorithms And Compared With Chomette\'S Mode, Samir Zeghbib, Samia Bouzid, Abdelhafid Chaabi Jan 2013

Quantitative Characterization Of Atmospheric Desert Particles Via Multispectral Lidar Method (Uv To Ir), Using Genetic Algorithms And Compared With Chomette\'S Mode, Samir Zeghbib, Samia Bouzid, Abdelhafid Chaabi

Turkish Journal of Physics

Size distribution of desert aerosols was measured via LiDAR multi-spectral method using laser wavelengths from UV to mid-IR \lambda = 0.193, 0.694, 1.064, 3.370 and 10.60 \mu m, and applying statistical Markov chains and genetic algorithms. Our results are compared later with the well-known Chomette's desert model.

Go to article

Improved Hilbert Moment Thermal Qcd Sum Rules For B_S Meson And Stability With Respect To Moment Parameter, Elşen Veli̇, Gülşah Kaya, Arzu Türkan, Eni̇s Yazici Jan 2013

Improved Hilbert Moment Thermal Qcd Sum Rules For B_S Meson And Stability With Respect To Moment Parameter, Elşen Veli̇, Gülşah Kaya, Arzu Türkan, Eni̇s Yazici

Turkish Journal of Physics

In this paper, we deal with the temperature dependence of the leptonic decay constant and mass of B_s meson in the framework of the Hilbert moment QCD sum rule. In our calculations, we improve the thermal QCD sum rules, taking into account the thermal spectral density and the perturbative 2-loop order corrections to the correlation function. Moreover, we investigate the stability of the results with respect to the Hilbert moment parameter. Our numerical calculations demonstrate that the mass and decay constant are insensitive to the variation of temperature up to T \cong 100 MeV; however, after this value, they start …

Go to article

First Prev Next Last