$D^* D π$ and $B^* B π$ couplings from Dyson-Schwinger equations framework
Fuente:
arXiv
Salvato in:
| Autori principali: | , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915440652976128 |
|---|---|
| author | Xu, Yin-Zhen Raya, Khépani |
| author_facet | Xu, Yin-Zhen Raya, Khépani |
| contents | Employing a unified Dyson-Schwinger/Bethe-Salpeter equations approach, we calculate the strong decay couplings $D^* D π$ and $B^* B π$ within the so-called impulse-approximation in the moving frame. The $B^* B π$ estimation is reported for the first time based on a Poincaré invariant computation of the associated Bethe-Salpeter amplitudes. Our predictions yield $g_{D^* D π}=16.22_{-0.01}^{+0.03}$ and $g_{B^* B π}=40.09_{-1.37}^{+1.51}$, along with corresponding static strong couplings of $\hat{g}_D=0.55_{-<0.01}^{+<0.01}$, $\hat{g}_B=0.50_{-0.02}^{+0.02}$, which are consistent with recent experimental and lattice data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_12327 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | $D^* D π$ and $B^* B π$ couplings from Dyson-Schwinger equations framework Xu, Yin-Zhen Raya, Khépani High Energy Physics - Phenomenology Employing a unified Dyson-Schwinger/Bethe-Salpeter equations approach, we calculate the strong decay couplings $D^* D π$ and $B^* B π$ within the so-called impulse-approximation in the moving frame. The $B^* B π$ estimation is reported for the first time based on a Poincaré invariant computation of the associated Bethe-Salpeter amplitudes. Our predictions yield $g_{D^* D π}=16.22_{-0.01}^{+0.03}$ and $g_{B^* B π}=40.09_{-1.37}^{+1.51}$, along with corresponding static strong couplings of $\hat{g}_D=0.55_{-<0.01}^{+<0.01}$, $\hat{g}_B=0.50_{-0.02}^{+0.02}$, which are consistent with recent experimental and lattice data. |
| title | $D^* D π$ and $B^* B π$ couplings from Dyson-Schwinger equations framework |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.12327 |