Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity
An angular analysis of the B [superscript o] → K*[superscript o] (→ K⁺π⁻)μ ⁺μ⁻ decay is presented. The dataset corresponds to an integrated luminosity of 3.0 fb⁻¹ of pp collision data collected at the LHCb experiment. The complete angular information from the decay is used to determine CP-averaged o...
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| Format: | Article |
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Springer Berlin Heidelberg
2018
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| Online Access: | http://hdl.handle.net/1721.1/116245 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| _version_ | 1811083972400119808 |
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| author | LHCB Collaboration Ilten, Philip J Williams, Michael |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics LHCB Collaboration Ilten, Philip J Williams, Michael |
| author_sort | LHCB Collaboration |
| collection | MIT |
| description | An angular analysis of the B [superscript o] → K*[superscript o] (→ K⁺π⁻)μ ⁺μ⁻ decay is presented. The dataset corresponds to an integrated luminosity of 3.0 fb⁻¹ of pp collision data collected at the LHCb experiment. The complete angular information from the decay is used to determine CP-averaged observables and CP asymmetries, taking account of possible contamination from decays with the K⁺π⁻ system in an S-wave configuration. The angular observables and their correlations are reported in bins of q², the invariant mass squared of the dimuon system. The observables are determined both from an unbinned maximum likelihood fit and by using the principal moments of the angular distribution. In addition, by fitting for q²-dependent decay amplitudes in the region 1.1 < q²< 6.0 GeV 2 /c⁴, the zero-crossing points of several angular observables are computed. A global fit is performed to the complete set of CP-averaged observables obtained from the maximum likelihood fit. This fit indicates differences with predictions based on the Standard Model at the level of 3.4 standard deviations. These differences could be explained by contributions from physics beyond the Standard Model, or by an unexpectedly large hadronic effect that is not accounted for in the Standard Model predictions.[Figure not available: see fulltext.] Keywords: Rare decay; Hadron-Hadron scattering; FCNC Interaction; B physics; Flavor physics |
| first_indexed | 2024-09-23T12:42:33Z |
| format | Article |
| id | mit-1721.1/116245 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:42:33Z |
| publishDate | 2018 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1162452022-10-01T10:40:07Z Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity LHCB Collaboration Ilten, Philip J Williams, Michael Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Ilten, Philip J Williams, Michael An angular analysis of the B [superscript o] → K*[superscript o] (→ K⁺π⁻)μ ⁺μ⁻ decay is presented. The dataset corresponds to an integrated luminosity of 3.0 fb⁻¹ of pp collision data collected at the LHCb experiment. The complete angular information from the decay is used to determine CP-averaged observables and CP asymmetries, taking account of possible contamination from decays with the K⁺π⁻ system in an S-wave configuration. The angular observables and their correlations are reported in bins of q², the invariant mass squared of the dimuon system. The observables are determined both from an unbinned maximum likelihood fit and by using the principal moments of the angular distribution. In addition, by fitting for q²-dependent decay amplitudes in the region 1.1 < q²< 6.0 GeV 2 /c⁴, the zero-crossing points of several angular observables are computed. A global fit is performed to the complete set of CP-averaged observables obtained from the maximum likelihood fit. This fit indicates differences with predictions based on the Standard Model at the level of 3.4 standard deviations. These differences could be explained by contributions from physics beyond the Standard Model, or by an unexpectedly large hadronic effect that is not accounted for in the Standard Model predictions.[Figure not available: see fulltext.] Keywords: Rare decay; Hadron-Hadron scattering; FCNC Interaction; B physics; Flavor physics 2018-06-12T14:35:20Z 2018-06-12T14:35:20Z 2016-02 2015-12 2018-04-27T14:12:30Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/116245 Aaij, R. et al. “Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity.” Journal of High Energy Physics 2016, 2 (February 2016): 104 © 2016 The Author(s) https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 http://dx.doi.org/10.1007/JHEP02(2016)104 Journal of High Energy Physics Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer Berlin Heidelberg Springer |
| spellingShingle | LHCB Collaboration Ilten, Philip J Williams, Michael Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity |
| title | Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity |
| title_full | Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity |
| title_fullStr | Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity |
| title_full_unstemmed | Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity |
| title_short | Angular Analysis of the B [superscript o] → K*[superscript o] μ ⁺ μ⁻ Decay Using 3 Fb⁻¹ of Integrated Luminosity |
| title_sort | angular analysis of the b superscript o k superscript o μ ⁺ μ⁻ decay using 3 fb⁻¹ of integrated luminosity |
| url | http://hdl.handle.net/1721.1/116245 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
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