arXiv: hep-ph/9605359

arXiv: hep-ph/9605359
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arXiv:hep-ph/9605359

DOI:
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发表时间:
1997
期刊:
影响因子:
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通讯作者:
D. Nanopoulos
D. Nanopoulos
中科院分区:
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文献类型:
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作者:
J. L. Lopez;D. Nanopoulos

文献摘要

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我们证明了在翻转的SU(5)中自然存在的疏轻子Z ′规范玻色子可以解决Rb,Rc的“危机”,而不破坏良好的Γhad值.在一个字符串衍生版本的模型,我们研究了三种可能的情况下,模型的建设,将允许新的对称性保持不破低能量的约束。这样的Z ′规范玻色子与夸克产生了非普适耦合,在上夸克扇区中最大限度地违反宇称,并且可能对正在为RHIC准备的极化pp散射实验中的自旋不对称性做出重要贡献。DOE/ER/40717-27 CTP-TAMU-20/96 ACT-1996年5月6日
We show that leptophobic Z ′ gauge bosons occur naturally in flipped SU(5) and may resolve the Rb, Rc ‘crisis’ without upsetting the good value of Γhad. Within a string-derived version of the model, we study three possible scenarios and the constraints imposed on model building that would allow the new symmetry to remain unbroken down to low energies. Such Z ′ gauge boson has generation non-universal couplings to quarks that violate parity maximally in the up-quark sector, and may contribute significantly to spin asymmetries in polarized pp scattering experiments now being prepared for RHIC. DOE/ER/40717–27 CTP-TAMU-20/96 ACT-06/96 May 1996