Y dipion transitions at energies near the Y(4S)
Using a 4.19 fb-1 data sample collected with the CLEO II detector at the Cornell Electron Storage Ring, we have searched for dipion transitions between pairs of Y resonances at center of mass energies Ec.m. = 10.58 GeV and Ec.m. = 10.52GeV. We obtain the 90% confidence level upper limits B(Y(4S) →Y(...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1999
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| _version_ | 1797057500645687296 |
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| author | Glenn, S Kwon, Y Lyon, A Roberts, S Thorndike, E Jessop, C Lingel, K Marsiske, H Perl, M Savinov, V Ugolini, D Zhou, X Coan, T Fadeyev, V Korolkov, I Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, M Dambasuren, E Kopp, S Moneti, G Mountain, R |
| author_facet | Glenn, S Kwon, Y Lyon, A Roberts, S Thorndike, E Jessop, C Lingel, K Marsiske, H Perl, M Savinov, V Ugolini, D Zhou, X Coan, T Fadeyev, V Korolkov, I Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, M Dambasuren, E Kopp, S Moneti, G Mountain, R |
| author_sort | Glenn, S |
| collection | OXFORD |
| description | Using a 4.19 fb-1 data sample collected with the CLEO II detector at the Cornell Electron Storage Ring, we have searched for dipion transitions between pairs of Y resonances at center of mass energies Ec.m. = 10.58 GeV and Ec.m. = 10.52GeV. We obtain the 90% confidence level upper limits B(Y(4S) →Y(2S)π+π-)<3.9×10-4 and B(Y(4S)→Y(1S)π+π-)<1.2×10 -4. We also observe the transitions Y(3S)→Y(1S)π+π-, Y(3S)→Y(2S)π+π-, and Y(2S)→Y(1S)π+π-, from which we measure the cross sections for the radiative processes e+e-→Y(3S)γ and e+e-→Y(2S)γ. We obtain σee→Y(3S)γ = (17.8±3.0±1.7) pb and σee→Y(2S)γ=(15.5±1.3±1.4) pb at Ec.m. = 10.58 GeV, and σee→Y(3S)γ=(27.3±5.0±2.6) pb and σee→Y(2S)γ=(16.3±1.8±1.5) pb at Ec.m. = 10.52 GeV, which we compare with theoretical predictions. ©1999 The American Physical Society. |
| first_indexed | 2024-03-06T19:37:17Z |
| format | Journal article |
| id | oxford-uuid:1f7768d7-2583-4f02-bdea-824e014f69fe |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:37:17Z |
| publishDate | 1999 |
| record_format | dspace |
| spelling | oxford-uuid:1f7768d7-2583-4f02-bdea-824e014f69fe2022-03-26T11:22:04ZY dipion transitions at energies near the Y(4S)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1f7768d7-2583-4f02-bdea-824e014f69feEnglishSymplectic Elements at Oxford1999Glenn, SKwon, YLyon, ARoberts, SThorndike, EJessop, CLingel, KMarsiske, HPerl, MSavinov, VUgolini, DZhou, XCoan, TFadeyev, VKorolkov, IMaravin, YNarsky, IStroynowski, RYe, JWlodek, TArtuso, MDambasuren, EKopp, SMoneti, GMountain, RUsing a 4.19 fb-1 data sample collected with the CLEO II detector at the Cornell Electron Storage Ring, we have searched for dipion transitions between pairs of Y resonances at center of mass energies Ec.m. = 10.58 GeV and Ec.m. = 10.52GeV. We obtain the 90% confidence level upper limits B(Y(4S) →Y(2S)π+π-)<3.9×10-4 and B(Y(4S)→Y(1S)π+π-)<1.2×10 -4. We also observe the transitions Y(3S)→Y(1S)π+π-, Y(3S)→Y(2S)π+π-, and Y(2S)→Y(1S)π+π-, from which we measure the cross sections for the radiative processes e+e-→Y(3S)γ and e+e-→Y(2S)γ. We obtain σee→Y(3S)γ = (17.8±3.0±1.7) pb and σee→Y(2S)γ=(15.5±1.3±1.4) pb at Ec.m. = 10.58 GeV, and σee→Y(3S)γ=(27.3±5.0±2.6) pb and σee→Y(2S)γ=(16.3±1.8±1.5) pb at Ec.m. = 10.52 GeV, which we compare with theoretical predictions. ©1999 The American Physical Society. |
| spellingShingle | Glenn, S Kwon, Y Lyon, A Roberts, S Thorndike, E Jessop, C Lingel, K Marsiske, H Perl, M Savinov, V Ugolini, D Zhou, X Coan, T Fadeyev, V Korolkov, I Maravin, Y Narsky, I Stroynowski, R Ye, J Wlodek, T Artuso, M Dambasuren, E Kopp, S Moneti, G Mountain, R Y dipion transitions at energies near the Y(4S) |
| title | Y dipion transitions at energies near the Y(4S) |
| title_full | Y dipion transitions at energies near the Y(4S) |
| title_fullStr | Y dipion transitions at energies near the Y(4S) |
| title_full_unstemmed | Y dipion transitions at energies near the Y(4S) |
| title_short | Y dipion transitions at energies near the Y(4S) |
| title_sort | y dipion transitions at energies near the y 4s |
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