Measurement of the τ lifetime

doi:10.1016/0550-3213(83)90105-0

Nuclear Physics B

Volume 211, Issue 3, 24 January 1983, Pages 369-374

https://doi.org/10.1016/0550-3213(83)90105-0 Get rights and content

Abstract

Using the 3-prong decays of τ leptons observed at the CELLO detector at PETRA, the τ lifetime is determined to be 4.7(_−2.9^+3.9)×10⁻¹³s.

References (8)

H.J. Behrend
Phys. Lett.
(1982)
H.J. Behrend
Phys. Scripta
(1981)

There are more references available in the full text version of this article.

Cited by (13)

Physics of tau leptons
1996, Physics Report
We review the current status of τ physics from an experimental point of view. Results from all experiments that have observed e⁺e⁻ → τ⁺τ⁻, from threshold to LEP energies, are summarized and discussed. Recent results on static properties of the τ^± and the ν_τ, such as mass and spin, are reported. We then analyze the world data on the production of τ pairs by the electroweak neutral current interaction. Decay properties of the τ lepton by the weak charged current are discussed. For the electroweak sector, we compare the properties of the three lepton generations. Since the τ lepton also decays into hadrons, resonance production by the weak charged current is studied and information on final state strong interactions is achieved. Finally, we comment on the implications of τ physics results in the search for new particles and new interactions.
Heavy flavour physics at colliders with silicon strip vertex detectors
1994, Physics Reports
The physics of heavy flavours has played a dominant role in high energy physics research ever since the discovery of charm in 1974, followed by the τ lepton in 1975 and bottom in 1977. With the startup of the large experiments at the e⁺e- colliders LEP and the SLC a new type of detector system has now come into operation which has a major impact on the studies of heavy flavours: the silicon strip vertex detector.
The basic design priciples of these novel detector systems are outlined and three representative experimental realizations are discussed. The impact of these detectors on the studies of the properties of heavy flavours is just emerging and focuses on the measurement of lifetimes and the tagging of the presence of heavy flavour hadrons in hadronic events. The tools that are being developed for these studies are described as well as details of representative analyses.
The potential of these devices and the associated technological developments that were necessary for their application in the colding beam environment is reflected in a plethora of new proposals to build sophisticated silicon detector systems for a large variety of future high energy physics applications. Two examples will be briefly sketched, a vertex detector for an asymmetric e⁺e^- bottom factory and a large scale tracking system for a multipurpose detector at one of the new large hadron colliders.
Weak decays of charmed quarks and τ leptons
1988, Nuclear Physics B (Proceedings Supplements)
The physics of the τ lepton
1988, Physics Reports
The performance of "Virtual Phase" CCDs as detectors of minimum-ionizing particles
1987, Nuclear Inst. and Methods in Physics Research, A
Determination of the τ lifetime in high energy e<sup>+</sup>e<sup>-</sup> annihilations
1984, Physics Letters B

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¹: Visitor from the Institute of High Energy Physics, Chinese Academy of Science, Peking, People's Republic of China.

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Measurement of the τ lifetime

Abstract

Phys. Lett.

Phys. Scripta