Updated Measurement of the Strong Phase in D0 --> K+pi- Decay Using Quantum Correlations in e+e- --> D0 D0bar at CLEO
| Autoři: | Collaboration, CLEO, Asner, D, Tatishvili, G, Ge, J, Miller, D, Shipsey, I, Xin, B, Adams, G, Napolitano, J, Ecklund, K, He, Q, Insler, J, Muramatsu, H, Pearson, L, Thorndike, E, Artuso, M, Blusk, S, Horwitz, N, Mountain, R, Skwarnicki, T, Stone, S, Wang, J, Zhang, L, Onyisi, P, Bonvicini, G |
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| Rok vydání: | 2016 |
| Popis: | We analyze a sample of 3 million quantum-correlated D0 D0bar pairs from 818 pb^-1 of e+e- collision data collected with the CLEO-c detector at E_cm = 3.77 GeV, to give an updated measurement of \cos\delta and a first determination of \sin\delta, where \delta is the relative strong phase between doubly Cabibbo-suppressed D0 --> K+pi- and Cabibbo-favored D0bar --> K+pi- decay amplitudes. With no inputs from other experiments, we find \cos\delta = 0.81 +0.22+0.07 -0.18-0.05, \sin\delta = -0.01 +- 0.41 +- 0.04, and |\delta| = 10 +28+13 -53-0 degrees. By including external measurements of mixing parameters, we find alternative values of \cos\delta = 1.15 +0.19+0.00 -0.17-0.08, \sin\delta = 0.56 +0.32+0.21 -0.31-0.20, and \delta = (18 +11-17) degrees. Our results can be used to improve the world average uncertainty on the mixing parameter y by approximately 10%. |
| Jazyk: | English |
| Přístupová URL adresa: | https://explore.openaire.eu/search/publication?articleId=od______1064::7c021ce22e2b01defec312c233ac0497 https://ora.ox.ac.uk/objects/uuid:3ce8ff94-e099-430f-8615-50a63bcdedf8 |
| Rights: | OPEN |
| Přírůstkové číslo: | edsair.od......1064..7c021ce22e2b01defec312c233ac0497 |
| Autor: | Collaboration, CLEO, Asner, D, Tatishvili, G, Ge, J, Miller, D, Shipsey, I, Xin, B, Adams, G, Napolitano, J, Ecklund, K, He, Q, Insler, J, Muramatsu, H, Pearson, L, Thorndike, E, Artuso, M, Blusk, S, Horwitz, N, Mountain, R, Skwarnicki, T, Stone, S, Wang, J, Zhang, L, Onyisi, P, Bonvicini, G |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Popis: | We analyze a sample of 3 million quantum-correlated D0 D0bar pairs from 818 pb^-1 of e+e- collision data collected with the CLEO-c detector at E_cm = 3.77 GeV, to give an updated measurement of \cos\delta and a first determination of \sin\delta, where \delta is the relative strong phase between doubly Cabibbo-suppressed D0 --> K+pi- and Cabibbo-favored D0bar --> K+pi- decay amplitudes. With no inputs from other experiments, we find \cos\delta = 0.81 +0.22+0.07 -0.18-0.05, \sin\delta = -0.01 +- 0.41 +- 0.04, and |\delta| = 10 +28+13 -53-0 degrees. By including external measurements of mixing parameters, we find alternative values of \cos\delta = 1.15 +0.19+0.00 -0.17-0.08, \sin\delta = 0.56 +0.32+0.21 -0.31-0.20, and \delta = (18 +11-17) degrees. Our results can be used to improve the world average uncertainty on the mixing parameter y by approximately 10%. |
| Databáze: | OpenAIRE |
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