期刊
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
卷 41, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0954-3899/41/5/055007
关键词
Noncommutative geometry; Z-boson physics; neutrino physics
资金
- Croatian Ministry of Science, Education and Sports [098-0982930-2872, 119-0982930-116]
The triple neutral gauge boson and direct U(1)(Y)-neutrino interactions, being absent in ordinary field theory, can arise quite naturally in noncommutative gauge field theories. Using non-perturbative methods and a Seiberg-Witten map-based covariant approach to noncommutative gauge theory, we have found theta-exact expressions for both interactions, thereby eliminating previous restrictions to low-energy phenomena. In particular, we obtain for the first time the covariant, theta-exact, triple neutral gauge boson interactions within the noncommutative standard model gauge sector including an additional gauge-field deformation freedom. Finally, we discuss implications for Z -> gamma gamma and Z -> (nu) over bar nu decays, and show that our results behave quite reasonably throughout all interaction energy scales.
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