Measurement of the branching fraction and time-dependent CP asymmetry for B⁰ → J/ψπ⁰ decays
Belle Collaboration; Pal, B.; Schwartz, A. J.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Badhrees, I.; Bahinipati, S.; Bansal, V.; Behera, P.; Beleño, C.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bozek, A.;
Abstract:
We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb−1 collected on the Υ(4S) resonance by the Belle experiment running at the KEKB e+e− collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10−5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=−0.59±0.19(stat)±0.03(syst) and A=−0.15±0.14(stat)
+0.04
−0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.
+0.04
−0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.
| Zugehörige Institution(en) am KIT | Institut für Experimentelle Teilchenphysik (ETP) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsjahr | 2018 |
| Sprache | Englisch |
| Identifikator | ISSN: 2470-0010, 2470-0029 urn:nbn:de:swb:90-892205 KITopen-ID: 1000089220 |
| Erschienen in | Physical review / D |
| Verlag | American Physical Society (APS) |
| Band | 98 |
| Heft | 11 |
| Seiten | Article: 112008 |
| Bemerkung zur Veröffentlichung | Gefördert durch SCOAP3 |
| Vorab online veröffentlicht am | 19.12.2018 |
| Nachgewiesen in | Web of Science OpenAlex Scopus Dimensions |