Study of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γ
We report a study of the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- decays, where the neutral D meson is detected through its decays to the K π± and CP -even K+K- and π+π- final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, cor...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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American Physical Society
2015
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| _version_ | 1797081830412779520 |
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| author | Aaij, R Adeva, B Adinolfi, M Derkach, D Gandini, P Gauld, R Greening, E Harnew, N Hill, D Hussain, N Jalocha, J John, M Lupton, O Malde, S Smith, E Stevenson, S Thomas, C Thomas, E Topp-Joergensen, S Torr, N Wilkinson, G al., e LHCb Collaboration |
| author_facet | Aaij, R Adeva, B Adinolfi, M Derkach, D Gandini, P Gauld, R Greening, E Harnew, N Hill, D Hussain, N Jalocha, J John, M Lupton, O Malde, S Smith, E Stevenson, S Thomas, C Thomas, E Topp-Joergensen, S Torr, N Wilkinson, G al., e LHCb Collaboration |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | We report a study of the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- decays, where the neutral D meson is detected through its decays to the K π± and CP -even K+K- and π+π- final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb-1. We observe the first significant signals in the CP -even final states of the D meson for both the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- modes, as well as in the doubly Cabibbo suppressed D→K+π- final state of the B-→Dπ-π+π- decay. Evidence for the suppressed decay B-→DK-π+π-, with D→K+π-, is also presented. From the observed yields in the B-→DK-π+π-, B-→Dπ-π+π- and their charge conjugate decay modes, the most probable value of the weak phase γ corresponds to γ=(74-19+20)°. This is one of the most precise single-measurement determinations of γ to date. |
| first_indexed | 2024-03-07T01:19:34Z |
| format | Journal article |
| id | oxford-uuid:8fe0ea2b-c49c-4788-b9e9-ffe81a5dae54 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:19:34Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:8fe0ea2b-c49c-4788-b9e9-ffe81a5dae542022-03-26T23:07:37ZStudy of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8fe0ea2b-c49c-4788-b9e9-ffe81a5dae54Symplectic Elements at OxfordAmerican Physical Society2015Aaij, RAdeva, BAdinolfi, MDerkach, DGandini, PGauld, RGreening, EHarnew, NHill, DHussain, NJalocha, JJohn, MLupton, OMalde, SSmith, EStevenson, SThomas, CThomas, ETopp-Joergensen, STorr, NWilkinson, Gal., eLHCb CollaborationWe report a study of the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- decays, where the neutral D meson is detected through its decays to the K π± and CP -even K+K- and π+π- final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb-1. We observe the first significant signals in the CP -even final states of the D meson for both the suppressed B-→DK-π+π- and favored B-→Dπ-π+π- modes, as well as in the doubly Cabibbo suppressed D→K+π- final state of the B-→Dπ-π+π- decay. Evidence for the suppressed decay B-→DK-π+π-, with D→K+π-, is also presented. From the observed yields in the B-→DK-π+π-, B-→Dπ-π+π- and their charge conjugate decay modes, the most probable value of the weak phase γ corresponds to γ=(74-19+20)°. This is one of the most precise single-measurement determinations of γ to date. |
| spellingShingle | Aaij, R Adeva, B Adinolfi, M Derkach, D Gandini, P Gauld, R Greening, E Harnew, N Hill, D Hussain, N Jalocha, J John, M Lupton, O Malde, S Smith, E Stevenson, S Thomas, C Thomas, E Topp-Joergensen, S Torr, N Wilkinson, G al., e LHCb Collaboration Study of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γ |
| title | Study of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γ |
| title_full | Study of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γ |
| title_fullStr | Study of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γ |
| title_full_unstemmed | Study of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γ |
| title_short | Study of B− → DK−π+π− and B− → Dπ−π+π− decays and determination of the CKM angle γ |
| title_sort | study of b dk π π and b dπ π π decays and determination of the ckm angle γ |
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