@article{ed2ddfae13484d798a6f00271f0cd5fe,
title = "First Observations of ϒ(1S)→γπ+π- and ϒ(1S)→γπ+π0π0 ",
abstract = "We report on a study of exclusive radiative decays of the ϒ(1S) resonance collected with the CLEO II detector operating at the Cornell Electron Storage Ring. We present the first observation of the radiative decays ?(1S)→γπ+#x03C0;- and ϒ(1S)→ γ #x03C0;0#x03C0;0. For the dipion mass regime m#x03C0;#x03C0; > 1.0 GeV we obtain B(ϒ(1S)→ γ#x03C0;+#x03C0;-)=(6.3±1.2±1.3)×10-5 and B(ϒ(1S)→ γ#x03C0;0#x03C0;0)=(1.7±0.6±0.3)×10-5.",
author = "{CLEO Collaboration} and A. Anastassov and Duboscq, {J. E.} and Gan, {K. K.} and T. Hart and K. Honscheid and H. Kagan and R. Kass and J. Lee and H. Schwarthoff and A. Wolf and Zoeller, {M. M.} and Richichi, {S. J.} and H. Severini and P. Skubic and A. Undrus and M. Bishai and S. Chen and J. Fast and Hinson, {J. W.} and N. Menon and Miller, {D. H.} and Shibata, {E. I.} and Shipsey, {I. P.J.} and S. Glenn and Y. Kwon and Lyon, {A. L.} and S. Roberts and Thorndike, {E. H.} and Jessop, {C. P.} and K. Lingel and H. Marsiske and Perl, {M. L.} and V. Savinov and D. Ugolini and X. Zhou and Coan, {T. E.} and V. Fadeyev and I. Korolkov and Y. Maravin and I. Narsky and R. Stroynowski and J. Ye and T. Wlodek and M. Artuso and E. Dambasuren and S. Kopp and Moneti, {G. C.} and R. Mountain and T. Skwarnicki and S. Stone",
year = "1999",
doi = "10.1103/PhysRevLett.82.286",
language = "English (US)",
volume = "82",
pages = "286--290",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "2",
}