Measurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alpha
We study B0→ρ0ρ0 decays in a sample of 465×106 Υ(4S)→BB̄ events collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider located at the Stanford Linear Accelerator Center (SLAC). We measure the branching fraction B=(0.92±0.32±0. 14)×10-6 and longitudinal polarization fraction...
| Huvudupphovsmän: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Materialtyp: | Journal article |
| Språk: | English |
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2008
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| _version_ | 1826267929219432448 |
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| author | Aubert, B Bona, M Karyotakis, Y Lees, J Poireau, V Prencipe, E Prudent, X Tisserand, V Tico, J Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, G Battaglia, M Brown, D Cahn, R Jacobsen, R Kerth, LT Kolomensky, Y Lynch, G Osipenkov, I |
| author_facet | Aubert, B Bona, M Karyotakis, Y Lees, J Poireau, V Prencipe, E Prudent, X Tisserand, V Tico, J Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, G Battaglia, M Brown, D Cahn, R Jacobsen, R Kerth, LT Kolomensky, Y Lynch, G Osipenkov, I |
| author_sort | Aubert, B |
| collection | OXFORD |
| description | We study B0→ρ0ρ0 decays in a sample of 465×106 Υ(4S)→BB̄ events collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider located at the Stanford Linear Accelerator Center (SLAC). We measure the branching fraction B=(0.92±0.32±0. 14)×10-6 and longitudinal polarization fraction fL=0.75-0.14+0. 11±0.05, where the first uncertainty is statistical and the second is systematic. The evidence for the B0→ρ0ρ0 signal has a significance of 3.1 standard deviations, including systematic uncertainties. We investigate the proper-time dependence of the longitudinal component in the decay and measure the CP-violating coefficients SL00=(0.3±0.7±0.2) and CL00=(0.2±0.8±0.3). We study the implication of these results for the unitarity triangle angle α. © 2008 The American Physical Society. |
| first_indexed | 2024-03-06T21:01:48Z |
| format | Journal article |
| id | oxford-uuid:3b201c5a-1f3e-447e-a870-e2ceabbef911 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:01:48Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:3b201c5a-1f3e-447e-a870-e2ceabbef9112022-03-26T14:05:47ZMeasurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alphaJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3b201c5a-1f3e-447e-a870-e2ceabbef911EnglishSymplectic Elements at Oxford2008Aubert, BBona, MKaryotakis, YLees, JPoireau, VPrencipe, EPrudent, XTisserand, VTico, JGrauges, ELopez, LPalano, APappagallo, MEigen, GStugu, BSun, LAbrams, GBattaglia, MBrown, DCahn, RJacobsen, RKerth, LTKolomensky, YLynch, GOsipenkov, IWe study B0→ρ0ρ0 decays in a sample of 465×106 Υ(4S)→BB̄ events collected with the BABAR detector at the PEP-II asymmetric-energy e+e- collider located at the Stanford Linear Accelerator Center (SLAC). We measure the branching fraction B=(0.92±0.32±0. 14)×10-6 and longitudinal polarization fraction fL=0.75-0.14+0. 11±0.05, where the first uncertainty is statistical and the second is systematic. The evidence for the B0→ρ0ρ0 signal has a significance of 3.1 standard deviations, including systematic uncertainties. We investigate the proper-time dependence of the longitudinal component in the decay and measure the CP-violating coefficients SL00=(0.3±0.7±0.2) and CL00=(0.2±0.8±0.3). We study the implication of these results for the unitarity triangle angle α. © 2008 The American Physical Society. |
| spellingShingle | Aubert, B Bona, M Karyotakis, Y Lees, J Poireau, V Prencipe, E Prudent, X Tisserand, V Tico, J Grauges, E Lopez, L Palano, A Pappagallo, M Eigen, G Stugu, B Sun, L Abrams, G Battaglia, M Brown, D Cahn, R Jacobsen, R Kerth, LT Kolomensky, Y Lynch, G Osipenkov, I Measurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alpha |
| title | Measurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alpha |
| title_full | Measurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alpha |
| title_fullStr | Measurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alpha |
| title_full_unstemmed | Measurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alpha |
| title_short | Measurement of the branching fraction, polarization, and CP asymmetries in B-0 ->rho(0)rho(0) decay, and implications for the CKM angle alpha |
| title_sort | measurement of the branching fraction polarization and cp asymmetries in b 0 gt rho 0 rho 0 decay and implications for the ckm angle alpha |
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