Theoretical Study of Photons Spectra around High Energy of Quark-antiquark Using QCD Theory

Abstract

In this paper, we study and investigate the quark anti-quark interaction mechanism through the annihilation process. The production of photons in association with interaction quark and gluon in the annihilation process. We investigate the effect of critical temperature, strength coupling and photons energy in terms of the quantum chromodynamics model theory framework. We find that the use of large critical temperature Tc =134 allows us to dramatically increase the strength coupling of quarks interaction. Its sensitivity to decreasing in photons rate with respect to strength coupling estimates. We also discuss the effect of photons energy on the rate of the photon , such as energies in range (1.5 to 5 GeV).The photons rate increases association at Tc=116MeV with the more decreased photons energy compared with photos rate association n t Tc=116MeV. This relation of strength coupling a, critical temperature and photons energy are particularly relevant when parametrizing systematic photons emission.

Theoretical Analysis Of The Photon Production Rate in the Quark-Gluon Interaction According To The Quantum Cromodynamic QCD Theory

“…The photon rate produced from the interaction of the anti-up with the antidown system is calculated using Eq. ( 31) by inserting the photon energy from experimental data in range 𝐸 = 1 𝑡𝑜 10𝐺𝑒𝑉 [26], critical temperature from Table 1, strength coupling 𝛼 𝑄𝐶𝐷 (𝜇 2 ) from Table 2, and fugacity of 𝜆 𝑞 =0.02 for quark, 𝜆 𝑔 =0.06 for gluon [23], taking the self-integral constants I T = 4.45 and I L = −4.26 [15] and using the chemical potential 𝜇 𝑞 = 500 𝑀𝑒𝑉 [27] and 𝛼 QED = 1/137 and 𝑁 = 3.…”

Study of Photon Emission at High Temperature of Quark Gluon Interaction

“…Quarks have many intrinsic properties such as spin, charge, mass, isospin and parity called quantum numbers which must be conserved [13] [14]. The strong interaction of quarks is descripted using quantum chromodynamics theory [15]. The behavior of quarks in the strong interaction is explained by the color charge exchanging property through the gluons [16].…”

Theoretical Calculation of Photon Emission from Quark-Antiquark Annihilation Using QCD Theory

“…In the 1960s, a variety of strong interaction particles are observed in experiments on nucleons [2]. Latterly, both George Zweig and Murray Gell-Mann introduce and proposed independently the quark model to describe hadrons in 1964 [3]. It fundamentally classification hadrons into mesons and baryons.…”