期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.091801
关键词
-
资金
- SLAC theory group
- John Templeton Foundation
- Government of Canada through Industry Canada
- Province of Ontario through the Ministry of Economic Development Innovation
The production of mu(+)mu(-) pair from the scattering of a muon neutrino off the Coulomb field of a nucleus, known as neutrino trident production, is a subweak process that has been observed in only a couple of experiments. As such, we show that it constitutes an exquisitely sensitive probe in the search for new neutral currents among leptons, putting the strongest constraints on well-motivated and well-hidden extensions of the standard model gauge group, including the one coupled to the difference of the lepton number between the muon and tau flavor, L-mu - L-tau. The new gauge boson Z', increases the rate of neutrino trident production by inducing additional ((mu) over bar gamma(alpha)mu)((nu) over bar gamma(alpha)nu) interactions, which interfere constructively with the standard model contribution. Existing experimental results put significant restrictions on the parameter space of any model coupled to muon number L-mu, and disfavor a putative resolution to the muon g - 2 discrepancy via the loop of Z' for any mass m(Z') greater than or similar to 400 MeV. The reach to the models' parameter space can be widened with future searches of the trident production at high-intensity neutrino facilities such as the LBNE.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据