Hiden GeV-Scale Interactions of Quarks.

Dobrescu, B. A. ; Frugiuele, C.

Technical Information Center Oak Ridge Tennessee

关键词: Quarks;    Baryons;    Bosons;    Constraints;    Coupling;   

RP-ID  :  DE141151743

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We explore quark interactions mediated by new gauge bosons of masses in the 0.3 50 GeV range. A tight upper limit on the gauge coupling of light Z(1) bosons is imposed by the anomaly cancellation conditions in conjunction with collider bounds on new charged fermions. Limits from quarkonium decays are model dependent, while electroweak constraints are mild. We derive the limits for a Z(1) boson coupled to baryon number, and then construct a Z(1) model with relaxed constraints, allowing quark couplings as large as 0.2 for a mass of a few GeV.