Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states
Abstract A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb−1 is used to measure eleven CP violation observables in B± → Dh± decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in t...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer Berlin Heidelberg
2022
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| Online Access: | https://hdl.handle.net/1721.1/143785 |
| _version_ | 1811085397998960640 |
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| author | Aaij, R. Abdelmotteleb, A. S. W. Abellán Beteta, C. Abudinen Gallego, F. J. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Aaij, R. Abdelmotteleb, A. S. W. Abellán Beteta, C. Abudinen Gallego, F. J. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. |
| author_sort | Aaij, R. |
| collection | MIT |
| description | Abstract
A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb−1 is used to measure eleven CP violation observables in B± → Dh± decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in the three-body final states: K±π∓π0; π+π−π0; K+K−π0 and the suppressed π±K∓π0 combination. The mode where a large CP asymmetry is expected, B± → [π±K∓π0]DK±, is observed with a significance greater than seven standard deviations. The ratio of the partial width of this mode relative to that of the favoured mode, B± → [K±π∓π0]DK±, is RADS(K) = (1.27 ± 0.16 ± 0.02) × 10−2. Evidence for a large CP asymmetry is also seen: AADS(K) = −0.38 ± 0.12 ± 0.02. Constraints on the CKM angle γ are calculated from the eleven reported observables. |
| first_indexed | 2024-09-23T13:08:57Z |
| format | Article |
| id | mit-1721.1/143785 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:08:57Z |
| publishDate | 2022 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1437852023-08-10T20:33:36Z Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states Aaij, R. Abdelmotteleb, A. S. W. Abellán Beteta, C. Abudinen Gallego, F. J. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. Massachusetts Institute of Technology. Department of Physics Abstract A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb−1 is used to measure eleven CP violation observables in B± → Dh± decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in the three-body final states: K±π∓π0; π+π−π0; K+K−π0 and the suppressed π±K∓π0 combination. The mode where a large CP asymmetry is expected, B± → [π±K∓π0]DK±, is observed with a significance greater than seven standard deviations. The ratio of the partial width of this mode relative to that of the favoured mode, B± → [K±π∓π0]DK±, is RADS(K) = (1.27 ± 0.16 ± 0.02) × 10−2. Evidence for a large CP asymmetry is also seen: AADS(K) = −0.38 ± 0.12 ± 0.02. Constraints on the CKM angle γ are calculated from the eleven reported observables. 2022-07-18T12:05:40Z 2022-07-18T12:05:40Z 2022-07-15 2022-07-17T03:16:03Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/143785 Journal of High Energy Physics. 2022 Jul 15;2022(7):99 PUBLISHER_CC en https://doi.org/10.1007/JHEP07(2022)099 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Aaij, R. Abdelmotteleb, A. S. W. Abellán Beteta, C. Abudinen Gallego, F. J. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states |
| title | Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states |
| title_full | Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states |
| title_fullStr | Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states |
| title_full_unstemmed | Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states |
| title_short | Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states |
| title_sort | constraints on the ckm angle γ from b dh decays using d h h ∓π0 final states |
| url | https://hdl.handle.net/1721.1/143785 |
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