Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S)
We present the first measurement of Υ(4S) decays to π+π-Υ(1S) and π+π-Υ(2S) based on a sample of 230×106Υ(4S) mesons collected with the BABAR detector. We measure the product branching fractions B(Υ(4S)→π+π-Υ(1S)) ×B(Υ(1S)→μ+μ-)=(2.23±0.25stat±0.27syst) ×10-6 and B(Υ(4S)→π+π-Υ(2S))×B(Υ(2S) →μ+μ-)=(1...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2006
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| _version_ | 1797084084319551488 |
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| author | Aubert, B Barate, R Bona, M Boutigny, D Couderc, F Karyotakis, Y Lees, J Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Battaglia, M Brown, D Button-Shafer, J Cahn, R |
| author_facet | Aubert, B Barate, R Bona, M Boutigny, D Couderc, F Karyotakis, Y Lees, J Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Battaglia, M Brown, D Button-Shafer, J Cahn, R |
| author_sort | Aubert, B |
| collection | OXFORD |
| description | We present the first measurement of Υ(4S) decays to π+π-Υ(1S) and π+π-Υ(2S) based on a sample of 230×106Υ(4S) mesons collected with the BABAR detector. We measure the product branching fractions B(Υ(4S)→π+π-Υ(1S)) ×B(Υ(1S)→μ+μ-)=(2.23±0.25stat±0.27syst) ×10-6 and B(Υ(4S)→π+π-Υ(2S))×B(Υ(2S) →μ+μ-)=(1.69±0.26stat±0.20syst)×10-6, from which we derive the partial widths Γ(Υ(4S)→π+π-Υ(1S))=(1. 8±0.4)keV and Γ(Υ(4S)→π+π-Υ(2S))=(2. 7±0.8)keV. © 2006 The American Physical Society. |
| first_indexed | 2024-03-07T01:50:27Z |
| format | Journal article |
| id | oxford-uuid:99e704de-5942-4db5-a40c-22753d67bad0 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:50:27Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:99e704de-5942-4db5-a40c-22753d67bad02022-03-27T00:17:43ZObservation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:99e704de-5942-4db5-a40c-22753d67bad0EnglishSymplectic Elements at Oxford2006Aubert, BBarate, RBona, MBoutigny, DCouderc, FKaryotakis, YLees, JPoireau, VTisserand, VZghiche, AGrauges, EPalano, AChen, JQi, NRong, GWang, PZhu, YEigen, GOfte, IStugu, BAbrams, GBattaglia, MBrown, DButton-Shafer, JCahn, RWe present the first measurement of Υ(4S) decays to π+π-Υ(1S) and π+π-Υ(2S) based on a sample of 230×106Υ(4S) mesons collected with the BABAR detector. We measure the product branching fractions B(Υ(4S)→π+π-Υ(1S)) ×B(Υ(1S)→μ+μ-)=(2.23±0.25stat±0.27syst) ×10-6 and B(Υ(4S)→π+π-Υ(2S))×B(Υ(2S) →μ+μ-)=(1.69±0.26stat±0.20syst)×10-6, from which we derive the partial widths Γ(Υ(4S)→π+π-Υ(1S))=(1. 8±0.4)keV and Γ(Υ(4S)→π+π-Υ(2S))=(2. 7±0.8)keV. © 2006 The American Physical Society. |
| spellingShingle | Aubert, B Barate, R Bona, M Boutigny, D Couderc, F Karyotakis, Y Lees, J Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Battaglia, M Brown, D Button-Shafer, J Cahn, R Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S) |
| title | Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S) |
| title_full | Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S) |
| title_fullStr | Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S) |
| title_full_unstemmed | Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S) |
| title_short | Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S) |
| title_sort | observation of υ 4s decays to π π υ 1s and π π υ 2s |
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