Department of Physics, LEPP, Cornell University, Ithaca, New York 14853, USA.
Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel.
Phys Rev Lett. 2014 Apr 4;112(13):131801. doi: 10.1103/PhysRevLett.112.131801. Epub 2014 Apr 2.
We present a new paradigm for supersymmetric theories with R-parity violation (RPV). At high scale, R parity is conserved in the visible sector but spontaneously broken in the supersymmetry-breaking sector. The breaking is then dynamically mediated to the visible sector and is manifested via nonrenormalizable operators at low energy. Consequently, RPV operators originate from the Kähler potential rather than the superpotential, and are naturally suppressed by the supersymmetry-breaking scale, explaining their small magnitudes. A new set of nonholomorphic RPV operators is identified and found to often dominate over the standard RPV ones. We study the relevant low-energy constraints arising from baryon-number violating processes, proton decay, and flavor changing neutral currents, which may all be satisfied if a solution to the standard model flavor puzzle is incorporated. The chiral structure of the RPV operators implies new and distinct collider signatures, indicating the need to alter current techniques in searching for RPV at the LHC.
我们提出了一个新的带有 R 宇称破坏（RPV）的超对称理论范例。在高能量标度下，可视部门中 R 宇称被守恒，但在超对称破坏部门中会自发破缺。这种破坏随后会通过非重整化算子在低能下动态传递到可视部门，并表现出来。因此，RPV 算子源于 Kähler 势能而不是超势能，并且自然受到超对称破缺尺度的抑制，解释了它们的小幅度。我们发现并确定了一组新的非全纯 RPV 算子，它们往往比标准 RPV 算子更具优势。我们研究了源于重子数破坏过程、质子衰变和味变中性电流的相关低能限制，如果纳入标准模型味难题的解决方案，这些限制都可能得到满足。RPV 算子的手征结构暗示了新的、独特的对撞机特征，这表明需要改变当前在 LHC 上寻找 RPV 的技术。
