Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays
The CP -violating asymmetry a[s over ls] is studied using semileptonic decays of B[0 over s] and [¯ over B][0 over s] mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0 fb[superscript −1]. The r...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2014
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| Online Access: | http://hdl.handle.net/1721.1/87572 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1826202588122447872 |
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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 | The CP -violating asymmetry a[s over ls] is studied using semileptonic decays of B[0 over s] and [¯ over B][0 over s] mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0 fb[superscript −1]. The reconstructed final states are D[± over s]μ[superscript ∓], with the D[± over s] particle decaying in the ϕπ[superscript ±] mode. The D[± over s]μ[superscript ∓] yields are summed over [¯ over B][0 over s] and B[0 over s] initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain a[s over ls] = (−0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic. |
| first_indexed | 2024-09-23T12:10:01Z |
| format | Article |
| id | mit-1721.1/87572 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:10:01Z |
| publishDate | 2014 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/875722022-10-01T08:35:28Z Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays Williams, Michael Massachusetts Institute of Technology. Department of Physics Williams, Michael The CP -violating asymmetry a[s over ls] is studied using semileptonic decays of B[0 over s] and [¯ over B][0 over s] mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0 fb[superscript −1]. The reconstructed final states are D[± over s]μ[superscript ∓], with the D[± over s] particle decaying in the ϕπ[superscript ±] mode. The D[± over s]μ[superscript ∓] yields are summed over [¯ over B][0 over s] and B[0 over s] initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain a[s over ls] = (−0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic. National Science Foundation (U.S.) 2014-05-29T17:26:56Z 2014-05-29T17:26:56Z 2013-12 2013-10 Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/87572 Aaij, R. et al. “Measurement of the Flavour-Specific CP-Violating Asymmetry a[s over sl] in B[0 over s] Decays.” Physics Letters B 728 (January 2014): 607–615. https://orcid.org/0000-0001-8285-3346 en_US http://dx.doi.org/10.1016/j.physletb.2013.12.030 Physics Letters B Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Williams, Michael Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays |
| title | Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays |
| title_full | Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays |
| title_fullStr | Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays |
| title_full_unstemmed | Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays |
| title_short | Measurement of the flavour-specific CP-violating asymmetry a[s over sl] in B[0 over s] decays |
| title_sort | measurement of the flavour specific cp violating asymmetry a s over sl in b 0 over s decays |
| url | http://hdl.handle.net/1721.1/87572 https://orcid.org/0000-0001-8285-3346 |
| work_keys_str_mv | AT williamsmichael measurementoftheflavourspecificcpviolatingasymmetryasoverslinb0oversdecays |