Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses
A combination of three LHCb measurements of the CKM angle γ is presented. The decays B[superscript ±]→DK[superscript ±] and B [superscript ±] →Dπ[superscript ±] are used, where D denotes an admixture of D[superscript 0] and [bar over D][superscript 0] mesons, decaying into K[superscript +] K[su...
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Elsevier BV
2018
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| Online Access: | http://hdl.handle.net/1721.1/116999 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1811072869363351552 |
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| author | Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Williams, Michael |
| author_sort | Williams, Michael |
| collection | MIT |
| description | A combination of three LHCb measurements of the CKM angle γ is presented. The decays B[superscript ±]→DK[superscript ±] and B [superscript ±] →Dπ[superscript ±] are used, where D denotes an admixture of D[superscript 0] and [bar over D][superscript 0] mesons, decaying into K[superscript +] K[superscript -], π[superscript +] π[superscript - ], K[superscript ±] π[superscript ∓], K[superscript ±] π[superscript ∓] π[superscript ±]π [superscript ∓], K[subscript S][superscript 0]π[superscript +]π[superscript -], or K[subscript S][superscript 0]K[superscript +]K[superscript -] final states. All measurements use a dataset corresponding to 1.0 fb[superscript -1] of integrated luminosity. Combining results from B[superscript ±]→DK[superscript ±] decays alone a best-fit value of γ=72.0° is found, and confidence intervals are setγ∈[56.4,86.7]°at 68% CL,γ∈[42.6,99.6] °at 95% CL. The best-fit value of γ found from a combination of results from B[superscript ±] →Dπ[superscript ±] decays alone, is γ=18.9°, and the confidence intervalsγ∈[7.4,99.2]°∪[167.9,176.4] °at 68% CL are set, without constraint at 95% CL. The combination of results from B[superscript ±]→DK[superscript ±] and B[supers cript ±] →Dπ[superscript ±] decays gives a best-fit value of γ=72.6° and the confidence intervalsγ∈[55.4,82.3]°at 68% CL,γ∈[40.2,92.7] °at 95% CL are set. All values are expressed modulo 180°, and are obtained taking into account the effect of D[superscript 0][bar over D][superscript 0] mixing. |
| first_indexed | 2024-09-23T09:18:17Z |
| format | Article |
| id | mit-1721.1/116999 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:18:17Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1169992022-09-26T11:15:14Z Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses Williams, Michael Massachusetts Institute of Technology. Department of Physics Williams, Michael A combination of three LHCb measurements of the CKM angle γ is presented. The decays B[superscript ±]→DK[superscript ±] and B [superscript ±] →Dπ[superscript ±] are used, where D denotes an admixture of D[superscript 0] and [bar over D][superscript 0] mesons, decaying into K[superscript +] K[superscript -], π[superscript +] π[superscript - ], K[superscript ±] π[superscript ∓], K[superscript ±] π[superscript ∓] π[superscript ±]π [superscript ∓], K[subscript S][superscript 0]π[superscript +]π[superscript -], or K[subscript S][superscript 0]K[superscript +]K[superscript -] final states. All measurements use a dataset corresponding to 1.0 fb[superscript -1] of integrated luminosity. Combining results from B[superscript ±]→DK[superscript ±] decays alone a best-fit value of γ=72.0° is found, and confidence intervals are setγ∈[56.4,86.7]°at 68% CL,γ∈[42.6,99.6] °at 95% CL. The best-fit value of γ found from a combination of results from B[superscript ±] →Dπ[superscript ±] decays alone, is γ=18.9°, and the confidence intervalsγ∈[7.4,99.2]°∪[167.9,176.4] °at 68% CL are set, without constraint at 95% CL. The combination of results from B[superscript ±]→DK[superscript ±] and B[supers cript ±] →Dπ[superscript ±] decays gives a best-fit value of γ=72.6° and the confidence intervalsγ∈[55.4,82.3]°at 68% CL,γ∈[40.2,92.7] °at 95% CL are set. All values are expressed modulo 180°, and are obtained taking into account the effect of D[superscript 0][bar over D][superscript 0] mixing. National Science Foundation (U.S.) 2018-07-19T14:29:07Z 2018-07-19T14:29:07Z 2013-10 2013-07 2018-06-08T14:40:23Z Article http://purl.org/eprint/type/JournalArticle 03702693 0370-2693 http://hdl.handle.net/1721.1/116999 Aaij, R., et al. “Measurement of the CKM Angle γ from a Combination of B[superscript ±]→Dh[superscript ±] Analyses.” Physics Letters B, vol. 726, no. 1–3, Oct. 2013, pp. 151–63. © 2013 CERN. https://orcid.org/0000-0001-8285-3346 http://dx.doi.org/10.1016/J.PHYSLETB.2013.08.020 Physics Letters B Creative Commons Attribution License 3.0 https://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier BV Physics Letters B |
| spellingShingle | Williams, Michael Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses |
| title | Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses |
| title_full | Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses |
| title_fullStr | Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses |
| title_full_unstemmed | Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses |
| title_short | Measurement of the CKM angle γ from a combination of B[superscript ±] → Dh[superscript ±] analyses |
| title_sort | measurement of the ckm angle γ from a combination of b superscript dh superscript analyses |
| url | http://hdl.handle.net/1721.1/116999 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT williamsmichael measurementoftheckmanglegfromacombinationofbsuperscriptdhsuperscriptanalyses |