Year: 1987
Type: article
Abstract: Data accumulated with a high-precision vertex drift chamber operating in the MAC detector at the SLAC storage ring PEP are used for a precise measurement of the lifetime of the \ensuremath{\tau} lepton. We measure decay lengths of a sample of reconstructed three-prong decay vertices, and impact parameters of a separate sample of decay tracks. Combining these results, we find that ${\ensuremath{\tau}}_{\ensuremath{\tau}}$=0.309\ifmmode\pm\else\textpm\fi{}0.019 ps, in agreement with the prediction from the measured leptonic branching ratio and \ensuremath{\tau}-\ensuremath{\mu} universality.
Source: Physical Review Letters
Authors: H. R. Band, M. Bosman, T. Camporesi, G. B. Chadwick, M. C. Delfino, R. De Sangro, W. T. Ford, M. W. Gettner, G. P. Goderre, G. L. Godfrey, D. E. Groom, R. B. Hurst, J. R. Johnson, T. L. Lavine, R. E. Leedy, I. Lippi, T. Maruyama, R. L. Messner, L. J. Moss, F. Muller, H. N. Nelson, I. Peruzzi, M. Piccolo, R. Prepost, J. Pyrlik, N. Qi, A. L. Read, D. M. Ritson, L. J. Rosenberg, J. C. Sleeman, J. G. Smith, J. P. Venuti, P. G. Verdini, E. von Goeler, Roy Weinstein, D. E. Wiser, R. W. Zdarko
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2004704654