Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays
A binned Dalitz plot analysis of B[superscript ±] → DK[superscript ±] decays, with D → K[0 over S] π[superscript +] π[superscript −] and K[0 over S] K[superscript +] K[superscript −], is performed to measure the CP-violating observables x[subscript ±] and y[subscript ±], which are sensitive to the C...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2014
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| Online Access: | http://hdl.handle.net/1721.1/92562 https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
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| author | Counts, Ian Thomas Hunt Ilten, Philip J Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Counts, Ian Thomas Hunt Ilten, Philip J Williams, Michael |
| author_sort | Counts, Ian Thomas Hunt |
| collection | MIT |
| description | A binned Dalitz plot analysis of B[superscript ±] → DK[superscript ±] decays, with D → K[0 over S] π[superscript +] π[superscript −] and K[0 over S] K[superscript +] K[superscript −], is performed to measure the CP-violating observables x[subscript ±] and y[subscript ±], which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis exploits a sample of proton-proton collision data corresponding to 3.0 fb[superscript −1] collected by the LHCb experiment. Measurements from CLEO-c of the variation of the strong-interaction phase of the D decay over the Dalitz plot are used as inputs. The values of the parameters are found to be x[subscript +] = (−7.7 ± 2.4 ± 1.0 ± 0.4) × 10[superscript − 2], x[subscript −] = (2.5 ± 2.5 ± 1.0 ± 0.5) × 10[superscript − 2], y[subscript +] = (−2.2 ± 2.5 ± 0.4 ± 1.0) × 10[superscript − 2] and y[subscript −] = (7.5 ± 2.9 ± 0.5 ± 1.4) × 10[superscript − 2]. The first, second, and third uncertainties are the statistical, the experimental systematic, and that associated with the precision of the strong-phase parameters. These are the most precise measurements of these observables and correspond to γ = (62[+15 over -14])° , with a second solution at γ → γ + 180°, and r[subscript B] = 0.080 [+0.019 over -0.021], where r[subscript B] is the ratio between the suppressed and favoured B decay amplitudes. |
| first_indexed | 2024-09-23T08:16:33Z |
| format | Article |
| id | mit-1721.1/92562 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:16:33Z |
| publishDate | 2014 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/925622023-02-26T08:11:22Z Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays Counts, Ian Thomas Hunt Ilten, Philip J Williams, Michael Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Counts, Ian Thomas Hunt Ilten, Philip James Williams, M. A binned Dalitz plot analysis of B[superscript ±] → DK[superscript ±] decays, with D → K[0 over S] π[superscript +] π[superscript −] and K[0 over S] K[superscript +] K[superscript −], is performed to measure the CP-violating observables x[subscript ±] and y[subscript ±], which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis exploits a sample of proton-proton collision data corresponding to 3.0 fb[superscript −1] collected by the LHCb experiment. Measurements from CLEO-c of the variation of the strong-interaction phase of the D decay over the Dalitz plot are used as inputs. The values of the parameters are found to be x[subscript +] = (−7.7 ± 2.4 ± 1.0 ± 0.4) × 10[superscript − 2], x[subscript −] = (2.5 ± 2.5 ± 1.0 ± 0.5) × 10[superscript − 2], y[subscript +] = (−2.2 ± 2.5 ± 0.4 ± 1.0) × 10[superscript − 2] and y[subscript −] = (7.5 ± 2.9 ± 0.5 ± 1.4) × 10[superscript − 2]. The first, second, and third uncertainties are the statistical, the experimental systematic, and that associated with the precision of the strong-phase parameters. These are the most precise measurements of these observables and correspond to γ = (62[+15 over -14])° , with a second solution at γ → γ + 180°, and r[subscript B] = 0.080 [+0.019 over -0.021], where r[subscript B] is the ratio between the suppressed and favoured B decay amplitudes. National Science Foundation (U.S.) 2014-12-30T21:31:50Z 2014-12-30T21:31:50Z 2014-10 2014-08 Article http://purl.org/eprint/type/JournalArticle 1029-8479 1126-6708 http://hdl.handle.net/1721.1/92562 Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Measurement of the CKM Angle γ Using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] Decays.” J. High Energ. Phys. 2014, no. 10 (October 2014). https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 en_US http://dx.doi.org/10.1007/jhep10(2014)097 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Counts, Ian Thomas Hunt Ilten, Philip J Williams, Michael Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays |
| title | Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays |
| title_full | Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays |
| title_fullStr | Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays |
| title_full_unstemmed | Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays |
| title_short | Measurement of the CKM angle γ using B[superscript ±] → DK[superscript ±] with D → K[0 over S] π[superscript +] π[superscript −], K[0 over S] K[superscript +] K[superscript −] decays |
| title_sort | measurement of the ckm angle γ using b superscript dk superscript with d k 0 over s π superscript π superscript k 0 over s k superscript k superscript decays |
| url | http://hdl.handle.net/1721.1/92562 https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
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