论文标题
$ u $玻色子，在广义的深色光子或深色$ z $之间插值
The $U$ boson, interpolating between a generalized dark photon or dark $Z$, an axial boson and an axionlike particle
论文作者
论文摘要
从额外的$ u（1）$ interpolates中的一个轻玻色子$ u $之间的一般深色光子之间的插值，耦合到$ q，\ b $和$ l_i $（或$ b-l $）（或$ b-l $），还有可能是暗物质，深色$ z $耦合到$ z $当前的$ z $，以及一个轴向与Quarks和Leptons和Qualps和Leptons相连。我们确定相应的$ u（1）_f $对称，具有$ f =γ_yy+γ_bb+γ_{l_i} l_i+γ_A+γ_af_a+γ_+γ_{f'} f'\！钩子。 $ u $电流是从$ u（1）_f $和$ z $电流中获得的，由Spin-0 Beh字段确定。手性夸克和Leptons的费用$ q_u $是$ q，\ b，\ l_i $和$ t_ {3l} $的组合，带有轴向$ f_a $。在存在两个BEH Doublet的情况下，它涉及一般的等轴测器和等视轴向术语。带有轴向耦合的纵向$ U $具有增强的相互作用，并且表现得像轴突一样。它的轴向耦合$ g_a $，通常仅限于$ <2 \ times 10^{ - 7} m_u $（meV），导致有效的伪内cal，$ g_p = g_a \ times 2m_ {q，l}，l}，l} a_ \ pm $。 $ \，a_ \ pm $与Singlet V.E.V.引起的隐形参数$ r = \cosθ_a$成比例，可能很大，并且允许$ u $非常弱的交互。这允许具有很小的量规耦合，并用两根双重和一个单曲表示为$ g“ \！/4 \ simeq 2 \ simeq 2 \ times 10^{ - 6} m_u $（mev）$ r/\ sin2β$。我们讨论了对中间人的抑制作用，对中性损失的现象学对中性损失，自然抑制$衰减等。$ u $玻色子适合在盛大的统一框架内，共生，与$ su（4）_ {\ rm es} $ eeldrostrong对称性在肠道上破裂，并取决于$ q，$ q，\ b-l，\ b-l，\ b-l，\ f_a $ and $ t_ $ t_ $ t_ $ t_ 3aa $ {3a $ g， $η$。
A light boson $U$ from an extra $U(1)$ interpolates between a generalized dark photon coupled to $Q,\ B$ and $L_i$ (or $B-L$), plus possibly dark matter, a dark $Z$ coupled to the $Z$ current, and one axially coupled to quarks and leptons. We identify the corresponding $U(1)_F$ symmetries, with $F= γ_Y Y+γ_B B+γ_{L_i}L_i+γ_A F_A+γ_{F'}F'\!+γ_d F_d$, $F_d$ acting in a dark sector and $F'$ on possible semi-inert BEH doublets uncoupled to quarks and leptons. The $U$ current is obtained from the $U(1)_F $ and $Z$ currents, with a mixing determined by the spin-0 BEH fields. The charge $Q_U$ of chiral quarks and leptons is a combination of $Q,\ B,\ L_i$ and $T_{3L}$ with the axial $F_A$. It involves in general isovector and isoscalar axial terms, in the presence of two BEH doublets. A longitudinal $U$ with axial couplings has enhanced interactions, and behaves much as an axionlike particle. Its axial couplings $g_A$, usually restricted to $< 2\times 10^{-7} m_U$(MeV), lead to effective pseudoscalar ones $g_P= g_A\times 2m_{q,l}\,/m_U=2^{1/4}\, G_F^{1/2}\, m_{q,l} \ A_\pm $. $\,A_\pm$ is proportional to an invisibility parameter $r=\cosθ_A$ induced by a singlet v.e.v., possibly large and allowing the $U$ to be very weakly interacting. This allows for a very small gauge coupling, expressed with two doublets and a singlet as $g"\!/4\simeq 2\times 10^{-6} m_U$(MeV) $ r/\sin 2β$. We discuss phenomenological implications for meson decays, neutrino interactions, atomic-physics parity violation, naturally suppressed $π^0\toγU$ decays, etc.. The $U$ boson fits within the grand-unification framework, in symbiosis with a $SU(4)_{\rm es }$ electrostrong symmetry broken at the GUT scale, with $Q_U$ depending on $Q,\ B-L,\ F_A$ and $T_{3A}$ through three parameters $γ_Y,\ γ_A$ and $η$.
