Özet
The μLan experiment at the Paul Scherrer Institute will measure the lifetime of the positive muon with a precision of 1 ppm, giving a value for the Fermi coupling constant GF at the level of 0.5 ppm. Meanwhile, by measuring the observed lifetime of the negative muon in pure hydrogen, the μCap experiment will determine the rate of muon capture, giving the proton's pseudoscalar coupling gp to 7%. This coupling can be calculated precisely from heavy baryon chiral perturbation theory and therefore permits a test of QCD's chiral symmetry.
Orijinal dil | İngilizce |
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Sayfa (başlangıç-bitiş) | 344-347 |
Sayfa sayısı | 4 |
Dergi | Nuclear Physics B - Proceedings Supplements |
Hacim | 149 |
DOI'lar | |
Yayın durumu | Yayınlandı - Ara 2005 |
Harici olarak yayınlandı | Evet |
Finansman
∗This work is supported in part by the U.S. Department of Energy and the National Science Foundation. The author gratefully acknowledges travel funds from the NuFact04 Young Scientist Support Program. †K.M. Crowe, F.E. Gray, and B. Lauss (U. of California, Berkeley and LBNL); R.M. Carey, W. Earle, A. Gafarov, B. Graf, M. Hance, M. Hare, I. Logashenko, K.R. Lynch, Y. Matus, J.P. Miller, B.L. Roberts, and J. Wasserman (Boston U.); D. Chitwood, S.M. Clayton, P.T. De-bevec, D.W. Hertzog, P. Kammel, B. Kiburg, R. McNabb, F. Mulhauser, C.J.G. Onderwater, C.S. Özben, C.C. Polly, and D. Webber (U. of Illinois at Urbana-Champaign); C.W. Arnold, K. Giovanetti, J. Mace, A.W. Werner, and W.R. Wiita (James Madison U.); S. Cheekatamalla, M. Deka, S. Dhamija, T. Gorringe, Y. Jia, and S. Tripathi (U. of Kentucky). ‡T.I. Banks, T.A. Case, K.M. Crowe, S.J. Freedman, F.E. Gray, and B. Lauss (U. of California, Berkeley and LBNL); R.M. Carey and J. Paley (Boston U.); D. Chitwood, S.M. Clayton, P.T. Debevec, D.W. Hert-zog, P. Kammel, B. Kiburg, R. McNabb, F. Mulhauser, C.J.G. Onderwater, C.S. Özben, A. Sharp, and D. Webber (U. of Illinois at Urbana-Champaign); T. Gorringe, M. Ojha, and P. Zolnierzcuk (U. of Kentucky); L. Bonnet, J. Deutsch, J. Govaerts, D. Michotte, and R. Prieels (U. Catholique de Louvain); F.J. Hartmann (Technis-che U. München); P.U. Dick, A. Dijksman, J. Egger, D. Fahrni, M. Hildebrandt, A. Hofer, L. Meier, C. Pe-titjean, and R. Schmidt (Paul Scherrer Inst.); V.A. An-dreev, B. Besymjannykh, A.A. Fetisov, V.A. Ganzha, V.I. Jatsoura, P. Kravtsov, A.G. Krivshich, E.M. Maev, O.E. Maev, G.E. Petrov, S. Sadetsky, G.N. Schapkin, G.G. Semenchuk, M. Soroka, V. Trofimov, A. Vasiliev, A.A. Vorobyov, and M. Vznuzdaev (Petersburg Nuclear Physics Inst.).
Finansörler | Finansör numarası |
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National Science Foundation | |
U.S. Department of Energy |