Leptophobic Z ′ in stringy flipped SU ( 5 )
نویسندگان
چکیده
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
منابع مشابه
ar X iv : h ep - p h / 96 05 35 9 v 3 1 4 O ct 1 99 6 Leptophobic Z ′ in stringy flipped SU ( 5 )
We show that leptophobic Z ′ gauge bosons occur naturally in flipped SU(5) and may shiftRb in an interesting way without upsetting the good values of Γhad and Rc. 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 generati...
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