论文标题
$0νβ$衰减在对称和非对称左右模型中的比较研究
A comparative study of $0νββ$ decay in symmetric and asymmetric left-right model
论文作者
论文摘要
我们研究了具有自发的D-Parity Breaking机制的TEV尺度左右模型中New Physics对中微子双β衰减（$0νββ$）的贡献，其中$ su（2）_l $和$ su（2）_r $ $ $ $ $ g_l $ g_l $和$ g_l $ and $ g_r $的值。中微子质量是在模型中通过扩展的逆向Seesaw机制生成的。我们将模型嵌入了非苏联对称$ so（10）$ ut中，目的是由于条件$ g_ {l} \ neq g_ {r} $量化结果。我们比较了$0νβ$衰减的半寿命的预测数值，有效的majorana质量参数和其他违反三种不同情况的参数的Lepton数字； （i）对于明显的左右对称模型（$ g_l = g_r $），（ii）用于具有自发D均等破裂的左右模型（$ g_l \ neq g_r $），（iii）用于带有drake的pati-salam对称性，带有draber breaking（$ g_l \ g_l \ neq g_r $）。我们展示了如何根据比率$ \ frac {g_r} {g_l} $抑制或增强对$0νβ$衰减的不同贡献，这些贡献是从成功的量规耦合统一预测的。
We study the new physics contributions to neutrinoless double beta decay ($0νββ$) in a TeV scale left-right model with spontaneous D-parity breaking mechanism where the values of the $SU(2)_L$ and $SU(2)_R$ gauge couplings, $g_L$ and $g_R$ are unequal. Neutrino mass is generated in the model via gauge extended inverse seesaw mechanism. We embed the model in a non-supersymmetric $SO(10)$ GUT with a purpose of quantifying the results due to the condition $g_{L} \neq g_{R}$. We compare the predicted numerical values of half life of $0νββ$ decay, effective Majorana mass parameter and other lepton number violating parameters for three different cases; (i) for manifest left-right symmetric model ($g_L = g_R$), (ii) for left-right model with spontaneous D parity breaking ($g_L \neq g_R$), (iii) for Pati-Salam symmetry with D parity breaking ($g_L \neq g_R$). We show how different contributions to $0νββ$ decay are suppressed or enhanced depending upon the values of the ratio $\frac{g_R}{g_L}$ that are predicted from successful gauge coupling unification.
