Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays
Measurements of the effective lifetimes in the B[0 over s]→K+K−, B0→K+π−B[superscript 0]→K+π− and B[0 over s]→π+K− decays are presented using 1.0 fb−11.0 fb[superscript −1] of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The analysis uses a data-driven appr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | en_US |
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Elsevier B.V.
2014
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| Online Access: | http://hdl.handle.net/1721.1/91225 https://orcid.org/0000-0001-8285-3346 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
| _version_ | 1811081730805727232 |
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| author | LHCb collaboration Counts, Ian Thomas Hunt Ilten, Philip James Williams, M. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics LHCb collaboration Counts, Ian Thomas Hunt Ilten, Philip James Williams, M. |
| author_sort | LHCb collaboration |
| collection | MIT |
| description | Measurements of the effective lifetimes in the B[0 over s]→K+K−, B0→K+π−B[superscript 0]→K+π− and B[0 over s]→π+K− decays are presented using 1.0 fb−11.0 fb[superscript −1] of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The analysis uses a data-driven approach to correct for the decay time acceptance. The measured effective lifetimes are
τBs0→K+K−=1.407±0.016(stat)±0.007(syst) ps,
τB0→K+π−=1.524±0.011(stat)±0.004(syst) ps,
τBs0→π+K−=1.60±0.06(stat)±0.01(syst) ps.
This is the most precise determination to date of the effective lifetime in the Bs0→K+K− decay and provides constraints on contributions from physics beyond the Standard Model to the Bs0 mixing phase and the width difference ΔΓs. |
| first_indexed | 2024-09-23T11:51:34Z |
| format | Article |
| id | mit-1721.1/91225 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:51:34Z |
| publishDate | 2014 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | mit-1721.1/912252022-09-27T22:26:06Z Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays Effective lifetime measurements in the Bs0→K+K−, B0→K+π− and Bs0→π+K− decays LHCb collaboration Counts, Ian Thomas Hunt Ilten, Philip James Williams, M. Massachusetts Institute of Technology. Department of Physics Counts, Ian Thomas Hunt Ilten, Philip James Williams, M. Measurements of the effective lifetimes in the B[0 over s]→K+K−, B0→K+π−B[superscript 0]→K+π− and B[0 over s]→π+K− decays are presented using 1.0 fb−11.0 fb[superscript −1] of pp collision data collected at a centre-of-mass energy of 7 TeV by the LHCb experiment. The analysis uses a data-driven approach to correct for the decay time acceptance. The measured effective lifetimes are τBs0→K+K−=1.407±0.016(stat)±0.007(syst) ps, τB0→K+π−=1.524±0.011(stat)±0.004(syst) ps, τBs0→π+K−=1.60±0.06(stat)±0.01(syst) ps. This is the most precise determination to date of the effective lifetime in the Bs0→K+K− decay and provides constraints on contributions from physics beyond the Standard Model to the Bs0 mixing phase and the width difference ΔΓs. National Science Foundation (U.S.) 2014-10-29T18:07:50Z 2014-10-29T18:07:50Z 2014-09 2014-07 Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/91225 Aaij, R. et al. “Effective Lifetime Measurements in the Bs0→K+K−, B0→K+π− and Bs0→π+K− Decays.” Physics Letters B 736 (September 2014): 446–454. 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/10.1016/j.physletb.2014.07.051 Physics Letters B Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier B.V. Elsevier |
| spellingShingle | LHCb collaboration Counts, Ian Thomas Hunt Ilten, Philip James Williams, M. Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays |
| title | Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays |
| title_full | Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays |
| title_fullStr | Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays |
| title_full_unstemmed | Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays |
| title_short | Effective lifetime measurements in the B[0 over s]--> K+K−, B[superscript 0]-->K+π− and B[0 over s]-->π+K− decays |
| title_sort | effective lifetime measurements in the b 0 over s k k b superscript 0 k π and b 0 over s π k decays |
| url | http://hdl.handle.net/1721.1/91225 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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