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Experimental tests of lepton universality in τ decay
dc.contributor.author | Ammar, Raymond G. | |
dc.contributor.author | Baringer, Philip S. | |
dc.contributor.author | Bean, Alice | |
dc.contributor.author | Besson, David Zeke | |
dc.contributor.author | Coppage, Don | |
dc.contributor.author | Darling, C. | |
dc.contributor.author | Davis, Robin E. P. | |
dc.contributor.author | Hancock, N. | |
dc.contributor.author | Kotov, S. | |
dc.contributor.author | Kravchenko, I. | |
dc.contributor.author | Kwak, Nowhan | |
dc.date.accessioned | 2014-10-20T14:20:14Z | |
dc.date.available | 2014-10-20T14:20:14Z | |
dc.date.issued | 1997-03-01 | |
dc.identifier.citation | A. Anastassov et al. ((CLEO Collaboration)).(1997). "Experimental tests of lepton universality in τ decay." Physical Review D, 55(5):2559. http://dx.doi.org/10.1103/PhysRevD.55.2559 | |
dc.identifier.issn | 1550-7998 | |
dc.identifier.uri | http://hdl.handle.net/1808/15322 | |
dc.description | This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.55.2559. | |
dc.description.abstract | The branching fractions for τ→eνν(τ), μνν(τ), and hν(τ) are measured using data collected with the CLEO detector at the CESR e(+)e(-) collider: Be=0.1776±0.0006±0.0017, Bμ=0.1737±0.0008±0.0018, and B(h)=0.1152±0.0005±0.0012, where the first error is statistical, the second systematic, and h refers to either a charged π or K. Also measured is the τ mass, mτ=(1778.2±1.4) MeV. Lepton universality is affirmed by the relative branching fractions (B(μ)/B(e)=0.9777±0.0063±0.0087, B(h)/B(e)=0.6484±0.0041±0.0060) and the charged-current gauge coupling-constant ratios (g(μ)/g(e)=1.0026±0.0055, g(τ)/g(μ)=0.9990±0.0098). The τ mass result may be recast as a τ neutrino mass limit, m(ν)(τ)<60 MeV at 95% C.L. | |
dc.publisher | American Physical Society | |
dc.title | Experimental tests of lepton universality in τ decay | |
dc.type | Article | |
kusw.kuauthor | Ammar, Raymond G. | |
kusw.kuauthor | Baringer, Philip S. | |
kusw.kuauthor | Bean, Alice | |
kusw.kuauthor | Besson, David Zeke | |
kusw.kuauthor | Coppage, Don | |
kusw.kuauthor | Darling, C. | |
kusw.kuauthor | Davis, Robin E. P. | |
kusw.kuauthor | Hancock, N. | |
kusw.kuauthor | Kotov, S. | |
kusw.kuauthor | Kravchenko, I. | |
kusw.kuauthor | Kwak, Nowhan | |
kusw.kudepartment | Physics and Astronomy | |
dc.identifier.doi | 10.1103/PhysRevD.55.2559 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item does not meet KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |