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ExcitedBcstates via the Dyson-Schwinger equation approach of QCD
Physical Review D ( IF 4.6 ) Pub Date : Lei Chang, Muyang Chen, Yu-xin Liu
Physical Review D ( IF 4.6 ) Pub Date : Lei Chang, Muyang Chen, Yu-xin Liu
We study the most recently observed excited states with the Dyson–Schwinger equation and the Bethe–Salpeter equation approach of continuum QCD. The obtained $M_{B^+_{c}(2S)}=6.813(16)\textmd{ GeV}$, $M_{B^{*+}_{c}(2S)}=6.841(18)\textmd{ GeV}$ and the mass splitting $M_{B_c^+(2S)}-M^{\text{rec}}_{B_c^{*+}(2S)} \approx 0.039 \textmd{ GeV}$ agree with the observations very well. Moreover we predict the leptonic decay constant $f_{B^+_{c}(2S)}=-0.165(10)\textmd{ GeV}$, $f_{B^{*+}_{c}(2S)}=-0.161(7)\textmd{ GeV}$ respectively.
中文翻译:
通过QCD的Dyson-Schwinger方程方法获得激发的Bc状态
我们研究了最近观察到的兴奋 戴森-施温格方程和Bethe-Salpeter方程连续QCD的状态。获得的$ M_ {B ^ + _ {c}(2S)} = 6.813(16)\ textmd {GeV} $,$ M_ {B ^ {* +} _ {c}(2S)} = 6.841(18) \ textmd {GeV} $和质量拆分$ M_ {B_c ^ +(2S)}-M ^ {\ text {rec}} _ {B_c ^ {* +}(2S)} \约0.039 \ textmd {GeV} $非常符合观察结果。此外,我们预测了轻子衰变常数$ f_ {B ^ + _ {c}(2S)} =-0.165(10)\ textmd {GeV} $,$ f_ {B ^ {* +} _ {c}(2S) } =-0.161(7)\ textmd {GeV} $。
更新日期:2020-09-23
中文翻译:
通过QCD的Dyson-Schwinger方程方法获得激发的Bc状态
我们研究了最近观察到的兴奋