تقرير
Heavy quarkonia spectroscopy at zero and finite temperature in bottom-up AdS/QCD
| العنوان: | Heavy quarkonia spectroscopy at zero and finite temperature in bottom-up AdS/QCD |
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| المؤلفون: | Contreras, Miguel Angel Martin, Diles, Saulo, Vega, Alfredo |
| المصدر: | Phys. Rev. D 103, 086008 (2021) |
| سنة النشر: | 2021 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | S-wave states of charmonium and bottomonium are described using bottom-up AdS/QCD. We propose a holographic model that unifies the description of masses and decay constants, leading to a precise match with experimental data on heavy quarkonia. Finite temperature effects are considered by calculating the current-current spectral functions of heavy vector mesons. The identification of quasi-particle states as Breit-Wigner resonances in the holographic spectral function was made. We develop a prescription to subtract background contributions from the spectral function to isolate the Breit-Wigner peak. The quasi-particle holographic thermal evolution is described, allowing us to estimate the melting temperature for vector charmonia and bottomonia. Our holographic model predicts that $J/\Psi$ melts at $415$ MeV $(\sim 2.92 ~T_c)$ and $\Upsilon$ melts at $465$ MeV $(\sim 3.27~ T_c)$) Comment: 13 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.103.086008 |
| URL الوصول: | http://arxiv.org/abs/2101.06212 |
| رقم الأكسشن: | edsarx.2101.06212 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.103.086008 |
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