Report
Magnetic field dependence of nucleon parameters from QCD sum rules
| العنوان: | Magnetic field dependence of nucleon parameters from QCD sum rules |
|---|---|
| المؤلفون: | Dominguez, C. A., Hernández, Luis A., Loewe, Marcelo, Villavicencio, Cristian, Zamora, R. |
| المصدر: | Phys. Rev. D 102, 094007 (2020) |
| سنة النشر: | 2020 |
| المجموعة: | High Energy Physics - Phenomenology Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Nuclear Theory |
| الوصف: | Finite energy QCD sum rules involving nucleon current correlators are used to determine several QCD and hadronic parameters in the presence of an external, uniform, large magnetic field. The continuum hadronic threshold $s_0$, nucleon mass $m_N$, current-nucleon coupling $\lambda_N$, transverse velocity $v_\perp$, the spin polarization condensate $\langle\bar q\sigma_{12} q\rangle$, and the magnetic susceptibility of the quark condensate $\chi_q$, are obtained for the case of protons and neutrons. Due to the magnetic field, and charge asymmetry of light quarks up and down, all the obtained quantities evolve differently with the magnetic field, for each nucleon or quark flavor. With this approach it is possible to obtain the evolution of the above parameters up to a magnetic field strength $eB < 1.4$ GeV$^2$. Comment: Note added in proof. Accepted for publication in Phys. Rev. D |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.102.094007 |
| URL الوصول: | http://arxiv.org/abs/2008.10742 |
| رقم الانضمام: | edsarx.2008.10742 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.102.094007 |
|---|