@article{b151c96d494a457a9601b664d59481a6,

title = "Test of the exponential decay law at short decay times using tau leptons the opal collaboration",

abstract = "Quantum mechanics predicts an exponential distribution for the decay time of massive particles. However, deviations are expected for decay times shorter than about 10-13 s in models conjecturing the existence of hidden variables. Following a recent proposal, the decay length distribution of 5843 τ leptons decaying into 3 charged particles was analyzed in search of such a deviation. The deviation from an exponential distribution with respect to the number of decays present within the exponential form, expressed as the relative weight of an excess at zero decay length, was measured to be 1.1% ± 1.4% ± 3.5%. This result is consistent with zero deviation and leads to an upper limit of 8.5% and a lower limit of -6.3% at the 95% confidence level.",

author = "{The OPAL Collaboration} and G. Alexander and J. Allison and N. Altekamp and K. Ametewee and KJ Anderson and S. Anderson and S. Arcelli and S. Asai and D. Axen and G. Azuelos and Bal, {A. H.} and Barberio, {A. E.} and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and G. Beaudoin and J. Bechtluit and Beck, {G. A.} and C. Beeston and T. Behnke and Bell, {A. N.} and Bell, {K. W.} and G. Bella and S. Bentvelsen and P. Berlich and S. Bethke and O. Biebel and Bloodworth, {I. J.} and Bloomer, {J. E.} and P. Bock and Bosch, {H. M.} and M. Boutemeur and Bouwens, {B. T.} and S. Braibant and P. Bright-Thomas and Brown, {R. M.} and Burckhart, {H. J.} and C. Burgard and R. B{\"u}rgin and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and C. Charlesworth and Charlton, {D. G.} and D. Chrisman and Chu, {S. L.} and Clarke, {P. E.L.} and R. Folman",

note = "Funding Information: National Science Foundation, USA, Particle Physics and Astronomy Research Council, UK Natural Sciences and Engineering Research Council, Canada, Fussefeld Foundation, Israel Ministry of Science, Israel Science Foundation, administeredb y the Israel Academy of Science and Humanities, Minerva Gesellschaft, JapaneseM inistry of Education, Science and Culture (the Monbusho) and a grant under the Monbusho International Science ResearchP rogram, German Israeli Bi-national Science Foundation (GIF) > Direction des Sciencesd e la Mat&e du Commissariat a 1{\textquoteright}Energie Atomique, France, Bundesministerium fur Forschung und Technologie, Germany, National ResearchC ouncil of Canada, A2 Sloan Foundation and Junta National de 1nvestigac;bC ientifica e Tecnolbgica, Portugal. Hungarian Foundation for Scientific Research,O TKA T-016660.",

year = "1996",

month = feb,

day = "1",

doi = "10.1016/0370-2693(95)01540-X",

language = "English",

volume = "368",

pages = "244--250",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "3",

}