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Search for rare and forbidden eta ' decays
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 | Davis, Robin E. P. | |
dc.contributor.author | Kotov, S. | |
dc.contributor.author | Kravchenko, I. | |
dc.contributor.author | Kwak, Nowhan | |
dc.contributor.author | Zhou, X. | |
dc.date.accessioned | 2007-04-11T21:14:17Z | |
dc.date.available | 2007-04-11T21:14:17Z | |
dc.date.issued | 2000-01 | |
dc.identifier.citation | Briere, RA, Behrens, BH, et al. Search for rare and forbidden eta ' decays. AMERICAN PHYSICAL SOC. January 2000. 84(1) : 26-30 | |
dc.identifier.other | http://publish.aps.org/ | |
dc.identifier.uri | http://hdl.handle.net/1808/1364 | |
dc.description.abstract | We have searched for rare and forbidden decays of the eta' meson in hadronic events at the CLEO II detector. The search is conducted on 4.80 fb(-1) of e(+)e(-) collisions at 10.6 GeV center-of-mass energy at the Cornell Electron Storage Ring. We find no signals, and set 90% confidence level upper limits of their branching fractions: B(eta' --> e(+)e(-)eta) < 2.4 x 10(-3), B(eta' --> e(+)e(-) pi(0)) < 1.4 x 10(-3), B(eta' --> e(+)e(-) gamma) < 0.9 x 10(-3), and B(eta' --> e mu) < 4.7 x 10(-4). We also fit the matrix element of the eta' --> pi(+)pi(-) eta Dalitz plot with the parametrization \M\(2) = A\1 + alpha gamma\(2), where gamma is a linear function of the kinetic energy of the eta, and find Re(alpha) =-0.021 +/- 0.025. | |
dc.language.iso | en_US | |
dc.publisher | AMERICAN PHYSICAL SOC | |
dc.title | Search for rare and forbidden eta ' decays | |
dc.type | Article | |
dc.rights.accessrights | openAccess |
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