Observation of the tau neutrino

被引：1

作者：

Lundberg, B

Niwa, K

Paolone, V

机构：

[1] Fermilab Natl Accelerator Lab, Particle Phys Div, Batavia, IL 60510 USA

[2] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan

[3] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

来源：

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE | 2003年 / 53卷

关键词：

standard model; nuclear emulsion; high energy; tau neutrino interactions;

D O I：

10.1146/annurev.nucl.53.041002.110555

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The tau neutrino was the last standard-model fermion to be directly observed. We report on the strategy, design, and results of the DONuT experiment. The data were acquired at Fermilab during 1997, and in July 2000, the DONuT collaboration presented four tau-neutrino interactions. Modem nuclear-emulsion processing was the key technology that made it possible to detect the decay of tau leptons produced in charged-current interactions of tau neutrinos. The precision of the emulsion data and the speed of digitization enabled the use of novel methods to locate interaction vertices and search for decays in emulsion data. We also discuss the level of background in the tau signal, which is small enough to permit the identification of individual tau events with high confidence.

引用

页码：199 / 218

页数：22

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