Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Masud, Bilal"'
The effects of virtual light quark pairs on the charmonium spectrum are studied. Pair creation is modelled with a ``$^{3}P_{0}$" vertex and intermediate states are summed up to 2S excitations. Quark model parameters are obtained by fitting to 12 well
Externí odkaz:
http://arxiv.org/abs/2211.08015
We study the states of $c\bar{c}$ and $b\bar{b}$ system in a non-relativistic a spin dependent potential model at finite temperature. The potential incorporate color screening effect through a parameter $\mu$. The parameter $\mu$ along with strong co
Externí odkaz:
http://arxiv.org/abs/2206.04169
Publikováno v:
Phys. Rev. D 100, 096002 (2019)
We calculate the spectrum of $B_c$ mesons using a non-relativistic quark potential model. Using the calculated wave functions, we compute the radiative widths of $B_c$ excited states. The strong decay widths are calculated in a modified $^3P_0$ model
Externí odkaz:
http://arxiv.org/abs/1910.02680
Using our analytical expressions that well model the lattice simulations of the gluonic excitations, we use the extended quark potential model to study the effects of orbital and radial excitations on the masses and sizes of conventional and hybrid $
Externí odkaz:
http://arxiv.org/abs/1811.07552
Publikováno v:
Phys. Rev. D 103, 054036 (2021)
In this work, we investigate how the details of the quark-gluon interaction vertex affect the quantitative description of chiral symmetry breaking through the gap equation for quarks. We start from two gluon propagator models widely used in literatur
Externí odkaz:
http://arxiv.org/abs/1810.01396
The strong decay amplitudes and radiative partial widths of orbital and radially excited states of $B$ and $B_s$ mesons are presented. These results are obtained with a nonrelativistic potential quark model, the nonrelativistic reduction of the elect
Externí odkaz:
http://arxiv.org/abs/1804.08802
We calculate the cross-sections for the processes $\rho J/\psi\rightarrow D^0\bar{D}^0$, $\rho J/\psi\rightarrow D^0\bar{D}^{0*}$ ($D^{0*}\bar{D}^{0}$) and $\rho J/\psi\rightarrow D^{0*}\bar{D}^{0*}$ using a QCD-motivated many-body overlap factor to
Externí odkaz:
http://arxiv.org/abs/1802.10423
Publikováno v:
Phys. Rev. D 95, 074018 (2017)
Using our extension of the quark potential model to hybrid mesons that fits well to the available lattice results, we now calculate the masses, radii, wave functions at origin, leptonic and two photon decay widths, E1 and M1 radiative transitions for
Externí odkaz:
http://arxiv.org/abs/1511.03632
Publikováno v:
Phys. Rev. C 100, 064906 (2019)
We calculate the absorbtion cross-sections of $B_{c}$ mesons by $\pi$ and $\rho$ mesons including anomalous processes using an effective hadronic Lagrangian. The enhancement of Bc production is expected due to QGP formation in heavy-ion experiments.
Externí odkaz:
http://arxiv.org/abs/1509.01525
Autor:
Ahmad, Daud, Masud, Bilal
Publikováno v:
Computers & Mathematics with Applications, Volume 69, Issue 10, 2015
We decrease the $rms$ mean curvature and area of a variable surface with a fixed boundary by iterating a few times through a curvature-based variational algorithm. For a boundary with a known minimal surface, starting with a deliberately chosen non-m
Externí odkaz:
http://arxiv.org/abs/1403.7529