Leptophobic $Z^{\prime }$ in stringy flipped SU(5)

Abstract

We show that leptophobic $Z^{\prime }$ gauge bosons occur naturally in flipped SU(5) and may shift $R_b$ in an interesting way without upsetting the good values of ${\Gamma }_{had}$ and $R_c$. 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 $Z^{\prime }$ 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.

22 pages, LaTeX, 3 figures (included). Final version to appear in Phys. Rev. D. Includes discussion on how to avoid potential FCNC problems and updated data on R_b and R_c

References in corpus (16)

• Implications of Abelian Extended Gauge Structures From String Models
• Leptophobic U(1)'s and the R_b - R_c Crisis
• Inclusive jet cross section in $\bar{p}p$ collisions at $\sqrt{s}=1.8$ TeV
• The Top Cross Section in Hadronic Collisions
• R_b and New Physics: A Comprehensive Analysis
• Baryonic $Z^{\prime }$ connection of LEP $R_{b,c}$ data with Tevatron $(W,Z,\gamma )b\bar{b}$ events
• Hadrophilic Z':a bridge from LEP1, SLC and CDF to LEP2 anomalies
• Rb, Rc and Jet Distributions at the Tevatron in a Model with an extra vector boson
• Lowering alpha_s by flipping SU(5)
• $R_b$ in supersymmetric models
• Supersymmetry and R_b in the light of LEP 1.5
• A string no-scale supergravity model and its experimental consequences
• A Consistent model of Electroweak data including $Z\to b\overline{b}$ and $Z\to c\overline{c}$
• Spin asymmetries in one-jet production at RHIC with polarized proton beams : the effects of a hadrophilic Z'
• An Elusive Z' Coupled to Beauty
• The Effects of a New Vector Boson on the Top Quark Cross Section at the Tevatron

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