arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.0391nucl-th
收藏

热能下$nd\rightarrow$ $^3Hγ$中宇称破坏光子圆偏振的有效场论

Parity-violating photon circular polarization in $nd\rightarrow$ $^3Hγ$ with effective field theory at thermal energy

M. Moeini Arani, S. Bayegan

摘要:

利用无介子有效场论(EFT($//!/!/!/pi$))研究了热能下$^3Hγ$过程的宇称破坏效应。对于弱的$NN$相互作用,宇称破坏拉格朗日量包含五个独立的低能耦合常数(LEC)。通过比较计算的观测值与足够数量的实验数据,可以确定耦合常数。因此,我们需要五个观测值来获得LEC。$nd\rightarrow$ $^3Hγ$过程中的光子圆偏振($P_γ$)是五个宇称违反观测量之一。我们计算$P_γ$在领先的顺序在LEC。我们比较我们的结果与以前的$P_γ$计算模型的基础上Desplanques,Donoghue,和Holstein。

英文摘要:

We study the parity-violating effects in $nd\rightarrow$ $^3Hγ$ process using pionless effective field theory (EFT($//!/!/!/pi$)) at thermal energy. For the weak $NN$ interaction the parity-violating Lagrangian contains five independent low-energy coupling constants (LECs). One can fix the coupling constants by comparison of the calculated observables with a sufficient number of experimental data. So, we need five observables to obtain LECs. One of the five parity-violating observables is the photon circular polarization ($P_γ$) in $nd\rightarrow$ $^3Hγ$ process. We calculate $P_γ$ at the leading order in terms of LECs. We compare our results with the previous $P_γ$ calculation based on the model of Desplanques, Donoghue, and Holstein.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑